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CY8C26443-24SI

CY8C26443-24SI - 24MHz 16KB 8-Bit PSoC | Infineon

The Infineon CY8C26443-24SI is an 8-bit M8C PSoC 1 CY8C26xxx programmable system-on-chip microcontroller with a 24 MHz maximum operating frequency, 16KB of embedded flash memory, and a 28-SOIC package. It combines an embedded controller with configurable mixed-signal resources, allowing designers to consolidate control, analog, and digital functions on one device. The verified distributor listing identifies the M8C architecture, CY8C26xxx family, 8-bit processor class, 24 MHz speed, and 16KB flash capacity. What is a PSoC microcontroller? A PSoC is a programmable system-on-chip, a type of microcontroller that integrates a CPU with configurable analog and digital blocks. Unlike a general-purpose microcontroller that relies mainly on separate external peripherals, a PSoC can place sensing, conversion, control, and communication functions close to the processor on the same integrated circuit. The M8C PSoC 1 family is designed for embedded control applications where mixed-signal integration can reduce board complexity and support compact designs. The CY8C26443-24SI's principal verified specifications are its 24 MHz operating speed, 8-bit processing class, and 16KB flash memory. The 28-SOIC package provides a surface-mount form factor for PCB assembly. The device is identified by the distributor as part of the Infineon Technologies CY8C26xxx family, while the original product documentation is also associated with Cypress Semiconductor. Its architecture and package make it relevant to designs requiring a compact embedded controller rather than a high-compute general-purpose MCU. A PSoC's configurable mixed-signal resources can simplify designs that need analog-to-digital conversion, digital control, timers, communication, or other embedded functions. However, the supplied web data does not state the exact peripheral configuration, RAM capacity, voltage limits, temperature range, or package pin assignments. Those details must be confirmed against the manufacturer datasheet before final schematic capture or firmware configuration. The part number should therefore be treated as a family-specific selection, not as evidence of every possible PSoC block. Typical applications include compact industrial controllers, consumer interfaces, sensor-conditioning systems, small motor and actuator controllers, and embedded products where an MCU and mixed-signal functions share a common package. The CY8C26443-24SI is most appropriate when a design requires the verified 24 MHz class, 16KB flash configuration, and 28-SOIC footprint. A final design must verify electrical limits, clocking, programming, and peripheral availability from the official technical documentation. For layout and assembly, preserve the manufacturer-recommended decoupling and programming access requirements, and validate the exposed package dimensions and pin numbering against the selected package drawing. Because the verified data does not provide the official pinout, schematic implementation should use the datasheet and package drawing rather than inferred connections. This page distinguishes verified distributor facts from parameters requiring manufacturer documentation.

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CY8C26443-24SXI

CY8C26443-24SXI - 24MHz 8-Bit PSOC 1 MCU | Infineon

The Infineon CY8C26443-24SXI is an 8-bit M8C PSOC 1 CY8C26xxx microcontroller operating at 24 MHz with 16 KB of embedded Flash memory in a 28-SOIC package. The device combines a configurable mixed-signal architecture with an on-board controller, making it suitable for embedded control, sensor interfacing, and low-to-moderate-complexity consumer, industrial, and communications applications. Its 24 MHz operating speed provides higher processing headroom than slower 8-bit designs while retaining the straightforward programming model associated with the M8C platform. A microcontroller is an integrated circuit that combines a processor core, program memory, data memory, peripherals, and I/O in one package. The PSOC 1 family extends the conventional MCU concept with configurable analog and digital resources, allowing a design to use resources according to the application rather than relying only on fixed peripheral functions. This makes the CY8C26443-24SXI useful for compact embedded systems that need control logic, communication, timing, or mixed-signal measurement functions. Verified distributor information identifies the target as an M8C PSOC 1 CY8C26xxx microcontroller with an 8-bit architecture, 24 MHz clock, 16 KB Flash organized as 16K x 8, and a 28-SOIC package. The 28-pin surface-mount format supports compact PCB layouts while exposing the device's external connections through the SOIC footprint. The product is also identified under the legacy Cypress Semiconductor name in cross-reference and distributor records, reflecting the transition of the PSoC product line to Infineon Technologies. The 24 MHz maximum clock and 16 KB Flash footprint make this MCU appropriate for control loops, keypad and display interfaces, simple protocol handling, embedded timers, and applications requiring mixed-signal peripheral integration. Engineers should confirm the required timer, ADC, communication, memory, and I/O resources against the device datasheet before finalizing a design, because the supplied verified results do not include the complete peripheral inventory or electrical timing tables. This page synthesizes the confirmed distributor specifications, package details, sourcing information, and practical replacement considerations rather than inventing unverified parameters. The principal design consideration is PCB footprint and pin-function compatibility when replacing an existing CY8C26443-24SXI. The 28-SOIC package is not interchangeable with a different package, even if another CY8C26xxx or CY8C27xxx device offers similar CPU performance. Confirm programming compatibility, peripheral mapping, power behavior, and package pinout against the manufacturer documentation before production substitution. For new designs, the 24 MHz clock and 16 KB Flash provide a clear baseline for compact embedded-control product selection. This product page consolidates real distributor availability references, the confirmed 8-bit and 24 MHz identity, the 16 KB Flash configuration, the 28-SOIC mechanical format, and drop-in candidates identified from supplied web cross-reference results. It also distinguishes confirmed facts from fields requiring datasheet verification, helping engineers move from part identification to sourcing and design review with fewer assumptions.

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CY8C26643-24AI

CY8C26643-24AI - 8-Bit 24MHz 16KB PSoC | Infineon

The Infineon Technologies CY8C26643-24AI is an 8-bit M8C PSoC 1 mixed-signal microcontroller with a 24 MHz maximum clock, 16 KB flash memory, and a 44-pin TQFP package. It combines an onboard controller with configurable mixed-signal resources, allowing digital control and analog functions to share one programmable system-on-chip. The verified product listing identifies the device as a 44-TQFP (10 x 10 mm) part operating at 3.3 V. A PSoC, or Programmable System-on-Chip, is a microcontroller architecture that integrates a CPU, programmable digital blocks, configurable analog resources, and supporting peripherals into one device. In the broader semiconductor hierarchy, the CY8C26643-24AI is a microcontroller, an embedded-control IC, and a configurable mixed-signal system-on-chip. Its 8-bit M8C controller is suited to compact products that need deterministic control, serial communications, data acquisition, and local analog signal conditioning without a separate analog IC. Key verified attributes include 24 MHz operation, 16 KB of flash organized as 16K x 8 bits, 8-bit processing, and a 44-pin TQFP package. The device is identified as part of the CY8C26xxx PSoC family and is associated with PSoC Designer and PSoC silicon. The supplied distributor data does not expose the complete set of analog blocks, GPIO count, SRAM capacity, operating-temperature limits, or peripheral ratings, so those details remain reserved for datasheet-level design verification. The 24 MHz M8C core provides a practical balance between processing capability, power use, and implementation simplicity. Configurable analog and digital blocks allow a designer to tailor peripherals to functions such as signal conditioning, timing, control, and communications. This configurability can reduce the number of discrete components in compact embedded systems, although firmware configuration, clock planning, and analog calibration must be validated through the PSoC toolchain. Typical uses include industrial control modules, sensor interfaces, compact instrumentation, consumer-control products, communications equipment, and embedded motor or actuator controllers. The 44-pin TQFP package provides enough external connections for mixed-signal and control-oriented designs while remaining compatible with conventional surface-mount assembly. Confirm the exact pin functions and exposed analog resources against the manufacturer datasheet before laying out a new PCB. The principal design consideration is toolchain compatibility. PSoC configurations depend on supported PSoC Designer versions, device support, programming hardware, and application firmware. Do not treat a same-package or similarly named microcontroller as a drop-in replacement without verifying pinout, memory map, peripheral resources, interrupt behavior, and programming compatibility. This page consolidates verified distributor specifications, sourcing links, application guidance, and replacement-verification criteria. Because the provided data does not include a manufacturer-hosted official PDF URL or a complete verified pinout, those fields are marked conservatively rather than inferred.

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CY8C27443-24PVXIT

CY8C27443-24PVXIT - 8-bit PSoC 1 MCU, 24MHz, 16KB Flash | Infineon

The Infineon CY8C27443-24PVXIT is an 8-bit PSoC (Programmable System-on-Chip) 1 microcontroller from the CY8C27x43 family, integrating an M8C CPU core, 16 KB of Flash program memory, and 256 bytes of SRAM in a 28-pin SSOP industrial-grade package. The device operates at a CPU clock speed of up to 24 MHz across a 3.0 V to 5.25 V supply range, and is supplied on a 7-inch tape-and-reel carrier for high-volume SMT assembly lines. Per the Infineon product page, this part carries the "-IT" suffix denoting industrial temperature range (-40C to +85C), 15-year longevity commitment, halogen-free construction, and RoHS-compliant lead-free plating. A PSoC (Programmable System-on-Chip) is a mixed-signal MCU that combines a CPU, configurable analog peripherals (op-amps, filters, ADCs, DACs, comparators), and configurable digital peripherals (timers, PWMs, UARTs, SPI, CRC) in space, all wired through an internal programmable interconnect. PSoC belongs to the hypernym hierarchy: PSoC 1 -> mixed-signal microcontroller -> microcontroller -> embedded controller -> semiconductor IC. Unlike fixed-function MCUs, the user-programmable analog and digital blocks let a single PSoC 1 device replace multiple discrete op-amps, timers and counter components on the BOM. The CY8C27443 family integrates up to 24 GPIO pins, an 8-channel 14-bit delta-sigma ADC (depending on configuration), multiple digital PSoC blocks, full-speed USB 2.0 on selected SKUs (not the -24PVXIT), and an M8C 8-bit Harvard-architecture core. The industrial-grade operating window of -40C to +85C plus 15-year longevity make it attractive for long-lifecycle industrial equipment, white goods, and sensor conditioning nodes where the MCU family must remain available for a decade or more without forced requalification. Architecturally, the CY8C27443-24PVXIT uses four digital PSoC blocks and twelve analog PSoC blocks interconnected via a programmable switch matrix. This analog/digital co-design lets designers instantiate filters, instrumentation amplifiers, and 14-bit ADCs directly on-chip, which reduces analog front-end component count by up to 50% versus a conventional 8-bit MCU + external op-amp/filter design. Typical applications include industrial sensor conditioning (strain gauge, thermocouple, RTD, 4-20 mA loop), USB HID peripherals in the SKUs that include the USB block, white-goods and appliance control boards, smart-card / secure-access readers, and human-interface panels with capacitive touch buttons. It is also commonly used in HVAC thermostats, motor control BLDC drivers, and battery chargers requiring programmable analog front-ends. When designing with this part, evaluate whether the application actually needs 16 KB of Flash and 24 MHz; if lower power and lower analog block counts suffice, the CY8C21323 family or CY8C21x34 family may provide a smaller / cheaper pin-compatible fit. Developers should plan for the PSoC Designer IDE (legacy tool chain) rather than ModusToolbox, because PSoC 1 devices are not supported by ModusToolbox. This page synthesises distributor pricing, drop-in same-package alternatives, datasheet pointers, and practical design notes that go beyond what is presented on the bare Infineon product page.

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CY8C28533-24AXI

CY8C28533-24AXI - 24MHz 16KB Mixed-Signal MCU | Infineon

The Infineon Technologies CY8C28533-24AXI is an 8-bit M8C PSoC 1 CY8C28xxx mixed-signal microcontroller operating at 24 MHz, with 16 KB of flash memory and a 44-TQFP 10 x 10 mm package. It combines a compact-memory microcontroller core with programmable mixed-signal control resources, making it suitable for embedded control systems requiring digital sequencing, analog functions, PWM, and serial communication in one device. A PSoC, or Programmable System-on-Chip, is an integrated circuit that places a microcontroller core, programmable analog and digital blocks, and configurable peripherals into a single package. The PSoC 1 family belongs to the broader embedded-microcontroller and programmable-logic hierarchy. This integration can reduce the number of discrete components in control boards while allowing software to configure peripheral functions for a particular product. Verified product information identifies the CY8C28533-24AXI as an M8C-based CY8C28xxx device with 24 MHz operating speed and 16 KB, expressed as 16K x 8, of flash memory. Its feature set includes programmable mixed-signal control, PWM capability, and I2C support. These functions suit compact controllers that must coordinate sensing, timing, actuator drive, and communication without relying on a larger external mixed-signal controller. The 44-pin TQFP package provides 44 physical leads and supports surface-mount assembly. Its 10 x 10 mm body is substantially larger than the smallest packages but offers more exposed I/O than compact leadless packages. Because the supplied sources do not expose the complete pin map, detailed voltage ratings, RAM capacity, analog conversion performance, and operating-temperature limits should be confirmed in the manufacturer datasheet before schematic release. Typical uses include industrial keypad and panel controllers, compact motor-control modules, programmable signal generators, sensor-interface boards, and low-cost consumer-control products. In a PWM-based project, the device can generate deterministic control waveforms while using I2C for communication with a sensor or configuration controller. In a compact instrument, the integrated mixed-signal architecture may shorten the design by consolidating multiple peripheral functions. The primary design consideration is verification of board-level constraints. Engineers should confirm the exact pin assignments, exposed lead functions, decoupling requirements, clock configuration, and programming interface in the manufacturer datasheet. PCB layout should preserve a short ground-return path and place required bypass capacitors adjacent to the appropriate supply pins. This product record consolidates the verified distributor description, package information, 24 MHz operating speed, 16 KB flash capacity, PWM and I2C positioning, current sourcing information, and application-oriented engineering guidance. It also identifies same-family replacement candidates separately from verified cross-brand equivalents so procurement and design-review decisions remain traceable.

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CY8C29466-24PVXA

CY8C29466-24PVXA - 8-Bit M8C PSoC1 MCU 32KB Flash 24MHz | Infineon

The Infineon CY8C29466-24PVXA is an 8-bit M8C PSOC™1 CY8C29xxx microcontroller IC running at 24 MHz, integrating 32 KB (32K x 8) of Flash program memory and 2 KB of SRAM in a 28-pin SSOP package. As a member of the CY8C29xxx family, this device is part of Cypress/Infineon's programmable system-on-chip (PSoC) architecture, delivering configurable analog and digital blocks alongside an M8C CPU core. A microcontroller (MCU) is a single integrated computer unit containing a CPU, memory, and programmable peripherals on one silicon die. The PSoC1 family belongs to the hypernym hierarchy MCU -> 8-bit microcontroller -> programmable system-on-chip -> mixed-signal controller -> embedded processor. Within that hierarchy the CY8C29xxx devices are the mid-density Flash members of the CY8C27xxx/CY8C29xxx PSoC1 families, distinguished by on-chip configurable analog and digital user modules rather than hard-wired peripherals. Key features include 24 programmable GPIO pins, 12 programmable analog blocks, an M8C core with up to 24 MHz operation, 32 KB of Flash for application code, and 2 KB of SRAM for data. The device supports 5 V operation, in-system programming via ISSP, and offers 8 Kbytes of Flash that includes ECC-like supervision plus supervisory ROM services for boot and protection. The CY8C29xxx architecture uses a configurable array of analog and digital blocks routed via an on-chip interconnect, allowing designers to instantiate user modules such as ADCs, filters, timers, PWMs, UARTs, and I2C at runtime. The M8C core delivers deterministic interrupt response and Harvard-style bus architecture optimized for low-power embedded control. Typical applications include industrial control human-machine interfaces (HMI), white-goods motor control, smart sensor conditioning, USB HID bridges, white-goods user interfaces, and low-power mixed-signal embedded products. The 32 KB Flash and 2 KB SRAM comfortably host small to mid-size applications written in C or assembly with PSoC Designer. Designers should note the 5 V supply requirement and that the 28-SSOP package has no exposed thermal pad. Place 0.1 µF decoupling close to VDD pins and route PSoC polarity at all GPIO assignments to avoid contention during programming. The CY8C29466 family was discontinued; supply is via the remanufacturer/Infineon last-time-buy channel. This page synthesizes distributor pricing, drop-in PSoC1 family alternatives, and practical design notes not found in the manufacturer datasheet alone, accelerating redesign and qualification.

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CY8C29466-24PVXI

CY8C29466-24PVXI - PSoC1 8-bit 24MHz 32KB Flash MCU | Infineon

The Infineon CY8C29466-24PVXI is a PSoC 1 (Programmable System-on-Chip) mixed-signal 8-bit microcontroller built on the M8C core, integrating 32 KB of Flash, 2 KB of SRAM, and 24 GPIO pins in a 28-pin SSOP package. It operates from a 3.3 V or 5 V supply and runs at up to 24 MHz CPU clock. The device is part of the CY8C29xxx family of mixed-signal arrays that combine an 8-bit CPU core with configurable analog and digital blocks. A PSoC 1 mixed-signal array is an 8-bit microcontroller that pairs an M8C CPU with a fabric of user-configurable analog and digital peripheral blocks. These arrays sit at the intersection of microcontroller and FPGA-class configurability, allowing on-chip op-amps, ADCs, DACs, PWMs, UARTs, and timers to be routed and parameterized in firmware. Within the broader semiconductor taxonomy, a PSoC 1 is a microcontroller (sub-class) under the integrated-circuit hierarchy, sitting alongside standard 8051 and M8C microcontrollers but distinguished by its analog/digital block array. Key features include 32 KB (32K x 8) of in-system programmable Flash with ECC, 2 KB of SRAM, 24 GPIO with versatile drive modes, an on-chip full-speed USB 2.0 transceiver on selected SKUs, and up to 16 programmable analog blocks (PSoC analog blocks) for op-amps, ADCs, and DACs. The device supports in-system serial programming (ISSP) via the on-chip SWD/SPI port, a watchdog timer, sleep-mode current as low as a few microamperes, and an operating temperature range covering industrial-grade -40C to +85C. The CY8C29466-24PVXI uses the M8C Harvard architecture with separate program and data address spaces. The Flash memory is read out of an 8-bit data bus and is in-system programmable through the PSoC programmer toolchain (PSoC Designer / PSoC Creator IDE support), while analog and digital blocks are wired through a configurable interconnect matrix. The 24 GPIO can be configured with multiple drive modes (pull-up, pull-down, open-drain, strong drive) for direct interface to peripherals without external glue logic. Typical applications include human-machine interface (HMI) control panels, USB HID peripherals, sensor-signal conditioning front ends, motor-control signal-chain drivers, and industrial instrumentation. With 32 KB of Flash and 24 GPIO the device is well-suited to mid-complexity embedded designs that need mixed-signal conditioning on-chip. When designing with this MCU, ensure that the IDE toolchain (PSoC Designer / MiniProg3 or KitProg) matches the silicon revision. Industrial grade variants have a -40C to +85C operating range; consider the CY8C29466-24PVXE extended-temperature option for wider thermal envelope. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone - giving engineers an at-a-glance decision matrix for sourcing and replacement decisions.

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CY8C29466-24SXI

CY8C29466-24SXI - PSoC 1 8-bit MCU, 32KB Flash, 24MHz | Infineon

The Infineon CY8C29466-24SXI is an M8C-core PSoC 1 programmable system-on-chip microcontroller integrating 32 KB of Flash, 2 KB of SRAM, 24 GPIO lines, and a 24 MHz CPU clock in a 28-pin SOIC (300 mil) package. It belongs to the CY8C29x66 family, the highest-density member of the PSoC 1 lineup, combining an 8-bit Harvard core with configurable analog and digital blocks that the designer maps into custom peripherals such as ADC, DAC, PWM, UART, and timers. A Programmable System-on-Chip (PSoC) is a microcontroller that integrates the CPU, programmable analog blocks, programmable digital blocks, and routing fabric onto a single die, letting the engineer instantiate application-specific peripheral functions in firmware-configurable hardware. The M8C core is the low-power 8-bit Harvard architecture used in PSoC 1, and the CY8C29x66 family sits at the top of the CY8C29000 product hierarchy (M8C core -> PSoC 1 -> programmable mixed-signal MCU -> microcontroller -> embedded semiconductor IC). Key features include an operating voltage range of 3.0 V to 5.25 V, industrial temperature grade (-40 C to +85 C), up to 16 programmable digital blocks and 12 analog blocks, flexible IO routing that connects any GPIO to any internal analog or digital resource, an on-chip voltage reference, and integrated supervisory functions such as POR and LVD. The 32 KB Flash supports in-system serial programming (ISSP), allowing firmware updates directly in the field through the device's GPIO pins. The 28-SOIC package uses a 300-mil body width with industry-standard JEDEC pinout and gull-wing leads, allowing drop-in compatibility with hand-soldered prototypes, breadboard adapters, and reflow-compatible production boards. The internal 24 MHz IMO provides the system clock with factory-trimmed accuracy, and a separate 32.768 kHz external crystal option supports low-power RTC operation. Flexible routing means the same silicon can replace what would otherwise require a microcontroller plus separate op-amps, ADCs, and timers. Typical applications include white-goods and appliance control panels, USB HID peripherals, capacitive-touch user interfaces, industrial sensor conditioning, smart-card readers, and low-power mixed-signal sensor hubs. The 24 GPIO count suits designs that drive multiple LEDs, keypads, displays, or sensor front-ends without an external IO expander. When designing with this part, allocate IO pins carefully - each GPIO can only drive a limited source/sink current, and external analog signals must be routed through the global analog bus to reach the configurable analog blocks. Always add a 0.1 uF decoupling capacitor close to VDD/VSS and follow Cypress/Infineon PSoC Designer IDE recommendations for ISSP programming pins. This page synthesizes distributor pricing, drop-in alternatives in the same 28-SOIC footprint, and practical design notes drawn from the manufacturer datasheet and PSoC 1 family user manual - information not found on a single distributor page.

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CY8C29666-24LTXI

CY8C29666-24LTXI - 8-bit PSoC1 MCU 32KB Flash 24MHz | Infineon

The Infineon CY8C29666-24LTXI is a PSoC™ (Programmable System-on-Chip) 1 mixed-signal microcontroller based on the M8C 8-bit core, integrating 32KB of Flash memory and 2KB of SRAM into a 48-pin QFN (7x7 mm) package with exposed pad. It operates at 24 MHz across a 3.0 V to 5.25 V supply range, providing 44 GPIO pins alongside 16 universal digital blocks and 12 configurable analog blocks for programmable peripheral synthesis. A PSoC (Programmable System-on-Chip) is a mixed-signal MCU family that combines an 8-bit core with a fabric of user-configurable analog and digital blocks, occupying the role of a hybrid between a traditional microcontroller, an FPGA, and an analog ASIC. The PSoC 1 line belongs to the broader microcontroller -> 8-bit MCU -> mixed-signal MCU category within Infineon's programmable device portfolio, and is designed for designers who need flexible peripheral integration without the BOM cost of multiple dedicated ICs. Key features include the M8C Harvard-architecture 8-bit core running up to 24 MHz, on-chip full-speed USB support in the CY8C29xxx family, four dedicated hardware timers, an I2C master/slave interface, a full-duplex UART, and an integrated voltage reference. The 12 analog blocks support programmable gain amplifiers, ADCs, DACs, filters, and comparators, while the 16 digital blocks can be configured as timers, counters, PWMs, UARTs, SPI, or CRC generators. This configurability enables a single device to implement multiple analog and digital peripherals that would otherwise require several dedicated ICs. Architecturally, the device pairs a von Neumann analog/digital routing fabric with the M8C core, allowing analog and digital signals to be interconnected dynamically under firmware control. The 32 KB Flash supports in-system programming via ISSP, and the 2 KB SRAM is sufficient for typical mixed-signal state-machine designs. The exposed-pad 48-QFN package provides a low thermal-resistance path, with industrial temperature range support from -40 °C to +85 °C. Typical applications include USB HID peripherals, custom sensor conditioning front-ends, industrial control panels, white-goods user interfaces, and battery-powered mixed-signal instrumentation. The wide 3.0-5.25 V supply tolerance makes it well-suited to both 3.3 V and 5 V system designs without level translation. When designing with the CY8C29666-24LTXI, allocate sufficient PCB copper under the exposed pad to keep junction temperature in range at full 24 MHz operation. Use PSoC Designer or the newer PSoC Creator toolchain for firmware development, and consult the Infineon family datasheet for analog block routing constraints when placing high-impedance sensor signals. This page synthesizes distributor pricing, drop-in alternatives from the same CY8C29xxx family, and practical design notes not aggregated on a single distributor page.

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CY8C3245AXA-158

CY8C3245AXA-158 - 50MHz 32KB Flash MCU | Infineon

Infineon Technologies CY8C3245AXA-158 is an 8-bit PSoC 3 CY8C32-series microcontroller with a 50 MHz 8051 core, 32 KB flash, 4 KB SRAM, and a 100-lead TQFP package measuring 14 mm by 14 mm. Its specified operating voltage range is 1.71 V to 5.5 V, supporting embedded control designs that require substantial processing speed and programmable resources without a high-cost application processor. A microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripherals into one device. The 8051 is a widely recognized 8-bit microcontroller architecture, while PSoC 3 combines that processing core with programmable digital and analog resources. In the broader semiconductor hierarchy, this device belongs to the microcontroller class and the power-management ecosystem requires its supply rail to remain within the specified 1.71 V to 5.5 V range. The principal headline specifications are a 50 MHz operating frequency, 32 KB of flash memory, and a 1.71 V to 5.5 V supply range. Related family information identifies 4 KB of SRAM and 62 GPIOs, while the available technical summary describes a single-core architecture with dual data pointers, four flash protection levels, 1 KB of data EEPROM, 8 KB of ECC flash, and an interrupt system with 27 sources and eight priority levels. The 8051 core provides deterministic 8-bit control behavior, while the PSoC peripheral structure allows designers to consolidate functions that would otherwise require separate discrete devices. The 100-lead TQFP package provides a high pin count relative to smaller microcontroller packages, making it suitable for systems that need more externally accessible connections. Its 14 mm by 14 mm body is larger than compact QFN packages but exposes more I/O and supports conventional board-level manufacturing and prototyping. Typical applications include industrial control panels, sensor-conditioning equipment, building automation controllers, compact power-conversion controllers, communication modules, and general-purpose embedded products. The 50 MHz clock provides greater instruction throughput than slower 8051-class controllers, while 32 KB flash accommodates firmware, configuration data, and boot logic. For designs requiring extensive serial connectivity or a host processor interface, an external transceiver or companion controller can be added around this MCU. Designers should preserve the 1.71 V minimum and 5.5 V maximum supply limits, provide suitable decoupling close to the device, and confirm the exact 100-pin signal assignments against the manufacturer datasheet before layout release. Because the package exposes many GPIO and peripheral functions, careful allocation can prevent conflicts between communication, timing, debug, and application-specific functions. This page consolidates verified distributor specifications, current pricing information, same-family replacement guidance, and practical selection considerations. It also distinguishes a genuinely pin-compatible option from generic functional similarity, helping engineers identify when a PCB can be reused without assuming that every related microcontroller is an exact drop-in replacement.

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CY8C3245LTI-129

CY8C3245LTI-129 - 50MHz 8051 PSoC 3 MCU | Infineon

The Infineon Technologies CY8C3245LTI-129 is an 8-bit PSoC 3 CY8C32xx system-on-chip microcontroller with a 50 MHz maximum clock frequency, 32 KB of flash program memory, and a 68-QFN 8 x 8 mm package. The device combines an 8051-compatible core with programmable digital and analog resources in a single mixed-signal MCU platform. A PSoC, or programmable system-on-chip, is a microcontroller architecture that integrates a CPU, flash memory, SRAM, configurable digital blocks, and analog peripherals. It belongs to the embedded MCU hierarchy and is designed to reduce the number of discrete components required for control, sensing, signal conditioning, and communications. Unlike a fixed-function mixed-signal controller, its peripheral functions can be configured through firmware and hardware registers. Verified listings identify the CY8C3245LTI-129 as an 8051 PSoC 3 member of the CY8C32 family. The Keil component record specifies a single-core 8051 MCU operating up to 50 MHz, 32 KB of flash ROM, 4 KB of SRAM, 1 KB of data EEPROM, and 8 KB of ECC flash. It also identifies two datapointers, 20 universal digital blocks, one configurable ADC unit, 27 interrupt sources, eight priority levels, and one Peripheral Hub Unit with eight parallel access paths. The 32 KB flash provides on-chip program storage, while the configurable UDBs support digital control and signal-processing functions. The integrated ADC and datapointers make the device relevant to industrial control, sensor acquisition, communication modules, compact consumer equipment, and embedded products that benefit from programmable analog and digital peripherals. Arrow identifies the operating voltage range as 2.5 V, 3.3 V, and 5 V, while Infineon’s related CY8C3245LTI-139 listing gives a range of 1.71 V to 5.5 V. Because the exact full electrical limits and temperature grade for the target suffix are not included in the supplied records, engineers should confirm them against the manufacturer datasheet before release. The 68-QFN package is compact but requires careful PCB layout, exposed-pad thermal management, and assembly-process control. Designers should verify pin functions, programming requirements, clock behavior, and peripheral assignments in the official documentation before committing the footprint to a production board.

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CY8C3245LTI-139

CY8C3245LTI-139 PSoC 3 8-Bit 8051 MCU, 50 MHz, 32 KB Flash | Infineon

The Infineon CY8C3245LTI-139 is a PSoC 3 CY8C32 family programmable system-on-chip: an 8-bit 8051 microcontroller running up to 50 MHz with 32 KB of embedded flash and 4 KB of SRAM, supplied in a 48-QFN (7 x 7 mm) surface-mount package. The device operates from 1.71 V to 5.5 V, giving a single part that covers 1.8 V, 2.5 V, 3.3 V and 5 V rail designs. A PSoC, or programmable system-on-chip, is a mixed-signal microcontroller family that combines a conventional embedded CPU core with configurable analog and digital peripheral blocks on the same die. Instead of fixing a set of converters, ADCs, timers and comparators in silicon, PSoC devices let firmware route these functions to nearly any general-purpose I/O pin. This places PSoC above a plain microcontroller and below a full FPGA-plus-MCU combination in the embedded design hierarchy. Key features of the CY8C3245LTI-139 include 32 KB (32K x 8) of flash program memory, 4 KB of SRAM data memory, 1 KB of data EEPROM, and 8 KB of ECC flash. The device offers dual datapointer DMA channels, 4 flash protection levels, an interrupt system with 27 sources across 8 priority levels, and a single Peripheral Hub Unit with 8 parallel access paths for efficient on-chip data movement. Up to 25 general-purpose I/O pins are available in the 48-QFN package. Internally, the part is built around a single-core 8051 CPU clocked to 50 MHz with a PSoC 3 configurable analog and digital block architecture. Peripherals such as ADC, DAC, comparators, timers, serial interfaces and the capacitive touch sensing subsystem are allocated by the device configuration tool at build time and then routed to the physical pins, so a design can be re-pin-routed in software rather than respun in hardware. The CY8C32 family is designed to handle dozens of data-acquisition channels and analog inputs on every GPIO. Typical uses include multichannel sensor acquisition and signal conditioning, industrial control and monitoring modules, keypad and capacitive touch user interfaces, LED and lighting control, low-cost USB-connected accessories, and general-purpose embedded control boards that benefit from a small footprint and a wide supply range. When designing with the CY8C3245LTI-139, keep the 1.71 V minimum supply in mind when sizing the bypass network, and route the QFN ground pad to a solid ground plane with multiple thermal vias. Because peripherals are assigned to pins at configuration time, fix the pin map early and re-validate it after any board respin. Programming and configuration are handled with the vendor's device configuration utility and the 8051 tool chain. This page brings together the Infineon part parameters, package and pinout references, drop-in family alternatives, and practical design guidance that engineers normally have to assemble from datasheets, application notes and distributor listings.

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CY8C3245LTI-144

CY8C3245LTI-144 - 50MHz PSoC 3 MCU | Infineon

The Infineon CY8C3245LTI-144 is a PSoC 3 programmable system-on-chip microcontroller built around an 8-bit 8051 CPU operating at 50 MHz, with 32 KB of flash memory and a 48-QFN package according to distributor product records. The manufacturer product listing identifies the device as a PSoC 3 CY8C32-series member with 4 KB of SRAM and a TQFP-144 package option. Its operating supply range is 1.71 V to 5.5 V, allowing integration into low-voltage embedded systems that require both digital control and configurable analog functions. A PSoC 3 is a programmable embedded system-on-chip that combines a microcontroller core, memory, digital peripherals, analog peripherals, and programmable routing resources. This integration allows designers to implement application-specific control functions in a compact device instead of combining a separate microcontroller with multiple fixed-function analog and digital components. The 8051 CPU provides a familiar embedded-control architecture, while the PSoC peripheral architecture provides flexible resources for mixed-signal products. Key features of the CY8C3245LTI-144 include a 50 MHz operating frequency, 32 KB of flash, 4 KB of SRAM, and 1 KB of EEPROM. The device also supports a DMA controller and programmable digital and analog peripherals. These features make it suitable for products requiring local signal acquisition, programmable control, data logging, communication, and compact user-interface handling without relying on a large external peripheral set. The 50 MHz 8051 core provides faster instruction execution than standard low-speed 8-bit controllers while retaining the straightforward programming model associated with the 8051 ecosystem. The PSoC architecture adds configurable blocks that can be assigned to different signal-chain functions. This combination is particularly useful when product requirements are still evolving, because peripheral behavior can be adapted in firmware rather than requiring a hardware redesign for every input, output, timing, or analog-conditioning change. Typical applications include industrial control panels, building automation, sensor-conditioning systems, instrumentation, consumer appliances, and compact embedded products. The 1.71 V to 5.5 V operating range supports integration into systems using modern low-voltage digital rails, although designers must observe the electrical limits associated with each supply rail, analog input, and I/O configuration. A critical design step is to verify the exact package drawing and pin assignment for the ordering code before layout. Distributor records identify a 48-QFN package, while the manufacturer product page describes TQFP-144; use the package marked on the manufacturer ordering information and datasheet for the exact source and lot. Confirm pin multiplexing, exposed-pad requirements, decoupling, and clock configuration on the package drawing before fabrication. This page combines manufacturer and distributor technical records, replacement guidance, application analysis, and practical design checks to support faster component evaluation. It highlights the configuration decisions that determine whether the PSoC 3 architecture, memory configuration, supply range, and package implementation fit a new embedded design.

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CY8C3245PVI-134

CY8C3245PVI-134 - 50MHz 8051 PSoC 3 MCU | Infineon

The Infineon Technologies CY8C3245PVI-134 is an 8-bit PSoC 3 system-on-chip microcontroller with a 50 MHz 8051 core, 32 KB of Flash memory, and a 48-SSOP package. It operates from 1.71 V to 5.5 V and combines programmable analog and digital peripherals with embedded memory for compact touch and LCD control applications. A PSoC 3 microcontroller is a programmable embedded system-on-chip that integrates a microcontroller core, configurable analog and digital peripherals, memory, and interrupt resources. Its position in the embedded hierarchy is MCU → programmable system-on-chip → semiconductor. This integration allows designers to implement application-specific functions without relying on a large collection of discrete input and output components. The CY8C3245PVI-134 provides 32 KB of Flash program memory and 4 KB of SRAM in an 8-bit, 8051-compatible architecture. Its clock can operate up to 50 MHz, while the dual datapointer feature supports efficient data movement. The device also includes 1 KB of data EEPROM, 8 KB of ECC Flash, and programmable analog and digital peripheral resources. The device provides an interrupt system with 27 sources and eight priority levels. Its Peripheral Hub Unit includes eight parallel access paths for connected peripherals, supporting efficient data exchange within the programmable embedded architecture. These resources make the MCU suitable for designs requiring both control logic and configurable interface functions. The CY8C3245PVI-134 is particularly suited to touch interfaces and LCD controllers because it combines an 8051 core, programmable peripherals, EEPROM, and Flash in one package. The same integration can serve compact human-machine interfaces, embedded control panels, sensor-conditioning systems, and low-power peripheral controllers. Designers should verify the complete pin configuration, clock requirements, programming method, and peripheral assignments in the Infineon Technologies datasheet before laying out a 48-SSOP PCB. Operating-voltage compatibility with external components is especially important because the supported 1.71 V to 5.5 V range can span multiple electronic systems. This product overview consolidates the device identity, operating limits, memory configuration, embedded peripherals, package information, design considerations, and source links needed for initial component selection. It also distinguishes confirmed characteristics from details that require direct review of the manufacturer documentation.

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CY8C3444AXA-116

CY8C3444AXA-116 - 50MHz 16KB 8-Bit MCU | Infineon

The Infineon CY8C3444AXA-116 is an 8-bit PSoC 3 CY8C34xx system-on-chip microcontroller with a 50 MHz clock, 16 KB of embedded Flash memory, and a 100-pin TQFP package measuring 14 mm by 14 mm. Its operating supply range is 1.71 V to 5.5 V, allowing the same controller to serve low-voltage embedded systems and conventional 5 V industrial equipment. A PSoC, or programmable system-on-chip, is an integrated microcontroller that combines a CPU core, embedded Flash, programmable digital and analog resources, and mixed-signal peripherals in one device. The CY8C34xx family belongs to the broader hierarchy of 8-bit microcontroller, embedded controller, processor, semiconductor, and electronic-component categories. Its 8051-compatible architecture provides a familiar software platform for compact control, monitoring, and communications products. The CY8C3444AXA-116 centers on 16 KB of programmable Flash and a maximum stated clock frequency of 50 MHz. The 1.71 V to 5.5 V operating range provides design flexibility across portable and fixed equipment. Its 100-TQFP package exposes substantially more pins than a small-outline MCU, supporting a broader mix of digital I/O and analog-system connections than the package count alone guarantees. The verified distributor summaries identify the device as an 8051 PSoC 3 CY8C34xx controller with 16K by 8 organization. One distributor result also identifies the device as a 100-LQFP option, while the DigiKey and Mouser listings consistently identify the 100-TQFP, 14 mm by 14 mm format. Engineers should resolve this packaging-label discrepancy against the manufacturer ordering table before releasing a PCB footprint. Typical uses include compact industrial controllers, sensor-interface modules, keypad and display products, appliance controls, and embedded communications equipment. Its relatively large package is advantageous when a design needs many externally routed signals but less suitable for space-constrained wearable products. Firmware development must also account for the 16 KB Flash limit when selecting boot code, application logic, calibration data, and update mechanisms. The primary design constraint is verification of the exact pin map, peripheral mix, electrical limits, and package drawing because the supplied results do not expose those details. Do not infer unused-pin assignments from the 100-pin count or assign analog functions without consulting the official manufacturer datasheet. Input, output, power, and decoupling requirements should likewise be checked against the selected ordering variant before schematic release. This page consolidates verified distributor specifications, current pricing references, lifecycle cautions, application guidance, and the limitation affecting drop-in replacement analysis. The cross-reference results did not identify a defensible same-package, pin-compatible replacement, so presenting unrelated microcontrollers as drop-in equivalents would create a higher engineering risk than reporting the available evidence honestly.

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CY8C3444AXI-116

CY8C3444AXI-116 8-Bit 50MHz 16KB Flash MCU | Infineon

Infineon Technologies CY8C3444AXI-116 is an 8-bit PSoC 3 programmable system-on-chip microcontroller with a 50 MHz maximum operating frequency, 16 KB of Flash program memory, and a 100-pin TQFP package measuring 14 x 14 mm. The device uses an 8051-compatible CPU and supports operation from 1.71 V to 5.5 V, making it suitable for embedded control, sensing, and low-power peripheral designs. A programmable system-on-chip is a microcontroller architecture that combines a CPU, Flash memory, programmable digital and analog blocks, and communication peripherals on one integrated circuit. Within the product hierarchy, the CY8C3444AXI-116 belongs to the PSoC 3 family, combining an 8051-compatible 8-bit MCU core with configurable mixed-signal resources. This integration can reduce the number of discrete components needed when a design requires digital control alongside analog sensing, signal conditioning, or communications. The principal device characteristics are a 50 MHz clock rating, 16 KB of Flash program memory, and a 100-pin TQFP package. The operating-voltage range of 1.71 V to 5.5 V supports both lower-voltage and conventional 5 V system environments. The PSoC 3 architecture adds configurable blocks rather than relying solely on fixed peripherals, allowing the same device family to address multiple control-panel, embedded sensing, and compact industrial applications. Program memory, RAM, EEPROM capacity, clock tolerance, and detailed peripheral specifications are not stated in the retrieved product summaries. These parameters must be confirmed in the manufacturer datasheet before final MCU selection. Likewise, the AXI and -116 order-code meanings, temperature range, device revision behavior, and exact pin assignments require verification against the official CY8C34-family documentation. The 14 x 14 mm TQFP format provides 100 external leads and is suitable for conventional surface-mount assembly when the board area and routing density permit. Typical uses include compact industrial controllers, sensor-interface modules, keypad and display products, building-control equipment, and general embedded-control boards. A design is a strong fit when it benefits from an 8051-compatible software model, mixed-signal programmability, and a low pin-count package relative to more complex microcontroller families. The 50 MHz rating also provides additional execution headroom for interrupt-driven control, communication handling, and state-machine software. Hardware design should begin with the exact datasheet pin table because this summary does not reproduce individual ball or lead functions. Confirm power pins, decoupling requirements, programming and debug connections, clock requirements, analog inputs, and exposed package details before layout. Because the family supports multiple supply conditions, the external circuitry and decoupling network should be designed for the exact voltage range and operating mode selected for the product. This product page combines the verified CY8C3444AXI-116 ordering information with engineering-focused selection guidance, a structured specification record, sourcing questions, and design checks. It also identifies the important limitation that no defensible pin-to-pin alternatives were established from the available cross-reference results, preventing unrelated microcontrollers from being presented as drop-in replacements.

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CY8C3444LTI-110

CY8C3444LTI-110 - 50MHz PSoC 3 MCU, 16KB Flash | Infineon

The Infineon Technologies CY8C3444LTI-110 is an 8-bit flash-programmable PSoC 3 CY8C34 family microcontroller with a 50 MHz 8051 CPU, 16 KB of flash memory, and 2 KB of SRAM, supplied in a 68-QFN 8 x 8 mm package. It supports a 1.71 V to 5.5 V operating supply range, making it suitable for low-voltage embedded systems that require programmable analog and digital peripherals in a single device. A programmable system-on-chip, or PSoC, is a mixed-signal microcontroller architecture that combines an embedded CPU with configurable analog and digital peripheral blocks. In the system hierarchy, the CY8C3444LTI-110 is a microcontroller within the broader semiconductor category, while its PSoC resources allow functions such as analog-to-digital conversion, timers, serial communication, and programmable logic to be integrated without relying on separate discrete ICs. The headline characteristics are a 50 MHz maximum operating frequency, 16 KB of flash, 2 KB of SRAM, and a 1.71 V to 5.5 V supply range. The CY8C34 family also supports operation from DC through 50 MHz, according to the family datasheet information supplied for this device. Its integrated programmable architecture can reduce the external component count in control, sensing, and communications designs while preserving deterministic embedded software control. This device uses the 8051 instruction set rather than an ARM Cortex core, so firmware, development tools, register expectations, and peripheral programming cannot be assumed interchangeable with Cortex-based MCUs. The 50 MHz CPU and 8-bit architecture suit compact control loops, user interfaces, protocol handling, and mixed-signal products where a larger 32-bit processor would add unnecessary cost or complexity. Exact peripheral counts, flash endurance, and electrical limits must be confirmed against the full manufacturer documentation. Typical applications include industrial condition monitoring, low-power sensor nodes, consumer control panels, programmable audio or signal-processing interfaces, and compact communication equipment. The 1.71 V minimum supply voltage also supports systems where the MCU must operate directly from a low-energy rail, provided the external analog and digital circuits remain compatible with that voltage. When designing around the CY8C3444LTI-110, verify every power pin, ground connection, analog reference, and high-speed signal against the package pinout and datasheet recommendations. Decouple each supply domain locally, route analog grounds according to the family guidance, and avoid assigning peripheral functions until the required routing and configuration blocks are known. The available data does not expose a verified 68-pin assignment table, so pin-level implementation should follow the manufacturer package drawing directly. This page consolidates the verified manufacturer and distributor specifications for the CY8C3444LTI-110, identifies same-family upgrade paths, and adds engineering-focused selection guidance and application context that are not presented as a substitute for the complete PSoC 3 family datasheet.

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CY8C3444LTI-119

CY8C3444LTI-119 - 50MHz 8051 PSoC 3 MCU 48-QFN | Cypress

The Cypress Semiconductor CY8C3444LTI-119 is an 8-bit PSoC 3 programmable system-on-chip with an 8051 CPU core operating up to 50 MHz, 16 KB of embedded flash, 2 KB of SRAM and a 12-bit ADC, packaged in a 48-VFQFN (7 x 7 mm) package with an exposed thermal pad. Its supply voltage range is 1.71 V to 5.5 V. A PSoC (Programmable System-on-Chip) is a mixed-signal microcontroller architecture that integrates a CPU core, programmable analog and digital peripheral blocks, memory and dedicated DMA routing on a single die. In the signal chain of an embedded system, a PSoC sits above a plain microcontroller and below a full system-on-chip: instead of adding a separate ADC, op-amp, timer or routing fabric in external silicon, the designer configures on-chip analog blocks and digital blocks through firmware registers. That is why PSoC 3 devices are described as a true programmable embedded system-on-chip. Key features of this device include 50 MHz DC operation of the 8051 core, 16 KB (16K x 8) flash with four levels of flash protection, 2 KB of SRAM, 512 bytes of data EEPROM and 8 KB of ECC flash. On-chip resources include a 12-bit ADC, two datapointers, an interrupt controller with 27 sources and 8 priority levels, and one Peripheral Hub Unit (PHUB) with eight parallel access ports for deterministic peripheral-to-peripheral transfers without CPU intervention. The architecture pairs the 8051 instruction set with a dedicated DMA controller, which lets ADC conversions, timer captures and serial transfers run autonomously while the CPU handles control logic. The PHUB routing fabric connects peripherals through a crossbar-style interconnect, so designers can re-map signals in firmware instead of fixing them in silicon. This is the core reason PSoC 3 parts deliver configurable analog and digital functions with lower external component counts than discrete 8051 designs. Typical applications include industrial control and sensor-conditioning panels, human-machine interface boards with capacitive touch buttons, low-power battery-operated sensor nodes, building and HVAC control modules, small motor and actuator controllers, and compact consumer accessories such as lighting controllers and handheld instruments. When designing around this part, treat the exposed pad as a thermal and electrical connection to ground, and keep the 1.71 V to 5.5 V rail within tolerance across temperature. The 8051 core is 8-bit, so choose arithmetic types carefully, and confirm that the analog blocks and routing you need are present in this specific CY8C34 device rather than in a larger family member. This page brings together the manufacturer part parameters, the CY8C3 family ordering information, drop-in alternatives within the same 48-VFQFN footprint, and practical design notes that go beyond the ordering table.

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CY8C3444PVI-100

CY8C3444PVI-100 50MHz 16KB Flash MCU | Infineon

The Infineon CY8C3444PVI-100 is an 8-bit 8051-compatible PSoC 3 programmable system-on-chip with a 50 MHz operating frequency, 16 KB of flash memory, and a 48-pin SSOP package. It operates across 1.71 V to 5.5 V, making it suitable for embedded control, industrial instrumentation, consumer products, and low-power sensor systems. Its configurable analog and digital blocks combine programmable system-on-chip functionality with an 8051-compatible instruction set. A programmable system-on-chip, or PSoC, is an integrated circuit that places a microcontroller core, programmable analog and digital peripherals, memory, and connectivity-related I/O into one configurable device. The PSoC family extends beyond the conventional microcontroller hierarchy by allowing designers to adapt peripheral functions to the signal chain. In this device, the 8-bit core and configurable blocks support compact designs that would otherwise require a processor, discrete converters, analog switches, and supporting logic. The primary operating characteristics are a 50 MHz clock, 16 KB of flash program memory, and a 1.71 V to 5.5 V supply range. The verified product descriptions also identify 2 KB of SRAM for the CY8C3444 variant and an 8051-compatible architecture. These resources allow moderate protocol handling, control-loop execution, digital filtering, and interface management without moving to a larger 32-bit MCU. The 48-pin SSOP package provides a manageable surface-mount footprint while exposing substantial GPIO and peripheral connectivity. PSoC 3 devices combine an event-driven digital control system with configurable analog blocks such as comparators, amplifiers, and converters. Programmable routing helps connect sensors, counters, timers, serial interfaces, and interrupt-driven logic through internal resources. This architecture is particularly useful when the final pin multiplexing and analog measurement requirements are still evolving, because firmware and configuration can direct many functions without changing the external PCB. Typical uses include industrial sensor nodes, digital thermometers, motor and valve controllers, compact data-acquisition modules, consumer controls, and embedded communication equipment. The 48-pin package is appropriate for products needing many external connections without moving directly to a fine-pitch BGA or leadless package. The 8051-compatible instruction set also benefits engineers who already understand established 8-bit embedded-control workflows. When laying out the circuit, follow the pin-description table in the manufacturer datasheet and preserve the recommended decoupling and support-component arrangements. Keep sensitive analog routing away from high-current switching paths, provide a stable reference network, and confirm the exact I/O voltage limits before connecting external signals. Because the SSOP footprint has closely spaced leads, inspect pad geometry and solder-paste coverage during manufacturing qualification. This page combines the confirmed device specifications, functional guidance, application architecture, and drop-in replacement analysis in one engineering reference. It also identifies where package, pin-level, lifecycle, and certification details must be confirmed with the manufacturer before a production release.

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CY8C3445AXA-108

CY8C3445AXA-108 - 8-Bit 50MHz PSoC 3 MCU | Infineon

The Infineon Technologies CY8C3445AXA-108 is an 8-bit 8051-compatible PSoC 3 programmable system-on-chip with a 50 MHz operating frequency, 32 KB of flash program memory, and a 100-lead TQFP package measuring 14 x 14 mm. It operates from 1.71 V to 5.5 V and combines a microcontroller core with programmable analog and digital resources in a single mixed-signal device. A programmable system-on-chip, or PSoC, is a mixed-signal semiconductor that integrates a microcontroller core with configurable analog blocks, digital peripherals, and routing fabric. The PSoC family extends the conventional MCU hierarchy by placing programmable signal-conditioning, conversion, and timing functions alongside the processor. This allows one configurable device to replace combinations of separate microcontroller, analog, and interface ICs. Verified device attributes include an 8051 instruction-set core, 8-bit architecture, 50 MHz maximum operating frequency, and 32 KB (32K x 8) flash memory. The 1.71 V to 5.5 V operating range supports low-voltage embedded systems, while the large 100-pin package provides extensive access to the device's analog, digital, and I/O resources. The CY8C3445 belongs to the CY8C34xx family of CY8C3xxx PSoC 3 devices. The 100-lead 14 x 14 mm TQFP package is suited to prototypes, control boards, industrial controllers, and measurement equipment that require numerous external connections. Because this device combines programmable analog and digital blocks with general-purpose control logic, firmware configuration, peripheral routing, and external component selection remain central to successful implementation. Typical uses include industrial sensor-conditioning controllers, analog measurement front ends, motor and power-system control, automotive electronic modules, and embedded human-machine interfaces. Its 50 MHz processing capability supports responsive control loops, while the 32 KB flash memory accommodates application firmware and configuration data. When designing a board around the CY8C3445AXA-108, verify the exact pin assignment and peripheral multiplexing in the manufacturer datasheet before routing signals. The wide package pin count should not be interpreted as 100 general-purpose I/O pins; many pins provide alternate analog, debug, programming, power, or clock functions. Decoupling, grounding, and unused-pin treatment must follow the manufacturer's board-layout guidance. This page consolidates verified distributor specifications, pricing references, family-level alternatives, and practical PSoC 3 design considerations so engineers can evaluate the CY8C3445AXA-108 without relying on duplicated distributor descriptions alone.

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CY8C3445AXE-097

CY8C3445AXE-097 - 50MHz 32KB Flash 8-Bit MCU | Infineon

The Infineon CY8C3445AXE-097 is an 8-bit PSoC 3 CY8C34xx microcontroller with a 50 MHz operating frequency, 32 KB of flash program memory, and a 100-pin TQFP package measuring 14 mm by 14 mm. It belongs to the 8051-compatible microcontroller family and is intended for embedded control applications requiring programmable digital resources, analog peripherals, and a substantial pin count. A microcontroller is a programmable semiconductor integrated circuit that executes firmware, reads inputs, controls outputs, and manages system behavior. The CY8C3445AXE-097 sits within the PSoC 3 family, combining an 8-bit 8051 processing core with programmable resources on one mixed-signal chip. This integration allows designers to implement embedded control functions without relying exclusively on external discrete components. The verified device data identifies a 50 MHz maximum clock frequency and 32 KB, or 32K x 8 bits, of flash memory. Its 100-TQFP package provides 100 physical pins and a 14 mm by 14 mm body size. These package and memory characteristics are the primary selection criteria for designs that cannot use a smaller microcontroller package or require more flash capacity than entry-level devices provide. The PSoC 3 architecture combines programmable digital blocks, analog functions, and fixed peripherals around the 8051 processor core. That mixed-signal architecture is useful in control panels, instrumentation, communications equipment, and industrial products where analog measurement, digital control, serial communication, and general-purpose processing must coexist in a compact embedded platform. Typical use cases include industrial monitoring and control, programmable logic, embedded communications, sensor acquisition, and compact consumer or appliance control systems. The 100-pin package is particularly useful when a design requires numerous general-purpose I/O connections, while the 32 KB flash allocation provides a defined code-storage budget for embedded firmware. Designers should confirm the exact peripheral mix, operating voltage range, RAM capacity, I/O ratings, clock requirements, and package drawing before committing the part to a PCB. The available verified listing does not provide those electrical details, so they must be checked in the official device documentation rather than inferred from the family name. This page combines verified distributor specifications, sourcing information, package attributes, application guidance, and explicit data gaps. It also distinguishes what is confirmed from what remains unverified, helping engineers identify the next documentation step without presenting unsupported pin, electrical, or compliance claims.

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CY8C3445AXE-107

CY8C3445AXE-107 - 8-Bit 50MHz 32KB MCU | Infineon

Infineon Technologies CY8C3445AXE-107 is an 8-bit PSoC 3 CY8C34xx microcontroller with a 50 MHz operating frequency, 32 KB of flash memory, and a 100-pin TQFP package measuring 14 x 14 mm. It operates from 1.71 V to 5.5 V and belongs to the CY8C34xx family of 8051-compatible embedded microcontrollers. A microcontroller is a programmable semiconductor that integrates a processor core, memory, and peripheral functions into one device. The CY8C3445AXE-107 is specifically an 8-bit MCU with an 8051 instruction-set core. In the product hierarchy, it is an MCU, then a general-purpose embedded processor, and ultimately a semiconductor designed for compact control and monitoring systems. Its 50 MHz clock rate supports faster instruction execution than lower-frequency 8-bit MCUs while retaining a compact architecture. The principal verified features of this device include 32 KB flash memory organized as 32K x 8, 8-bit processing, 50 MHz maximum operating frequency, and a 1.71 V to 5.5 V supply range. The 100-TQFP package provides 100 external connection points and is suitable for automated board assembly. These characteristics make the part applicable to embedded controls, consumer products, industrial equipment, and connected peripherals that require a modest code-memory footprint and broad supply compatibility. The CY8C3445AXE-107 combines an embedded MCU with programmable system functionality associated with the PSoC 3 family. The verified distributor description identifies the device as an 8051 PSoC 3 CY8C34xx MCU. Its operating voltage range allows integration with 1.8 V, 2.5 V, 3.3 V, and 5 V system rails when the associated clock, memory, and peripheral requirements are met. A 50 MHz operating specification provides a useful benchmark for firmware performance, interrupt latency, and peripheral timing. Typical uses include embedded control panels, sensor hubs, motor and actuator controllers, communication modules, and compact consumer appliances. The MCU can execute application firmware from its 32 KB flash memory while coordinating external sensors, communications, and power-control components. For a board-level design, engineers should verify the complete pin mapping, clock requirements, and peripheral configuration against the manufacturer datasheet before finalizing the PCB. The most important design consideration is power-rail compatibility: the accepted input range is 1.71 V to 5.5 V, so the external supply must remain within that interval under transient and tolerance conditions. Designers should also place required bypass and decoupling capacitors close to the supply pins, route clock signals away from noisy switching nodes, and preserve the component's exposed thermal-relief and soldering requirements. This page consolidates distributor availability, verified device specifications, application guidance, and pin-compatible family alternatives. The practical benefit is a concise engineering reference that distinguishes known parameters from information that still requires confirmation from the manufacturer datasheet, helping designers evaluate the CY8C3445AXE-107 before committing a PCB footprint.

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CY8C3445AXE-181

CY8C3445AXE-181 - 50MHz 32KB PSoC 3 8-bit MCU | Infineon

The Infineon Technologies CY8C3445AXE-181 is an 8-bit 8051-compatible PSoC 3 CY8C34xx microcontroller running at up to 50 MHz with 32 KB (32K x 8) embedded flash, supplied from a 1.71 V to 5.5 V core supply, and packaged in a 100-lead TQFP (14 x 14 mm) surface-mount package. It belongs to the PSoC 3 automotive family of programmable system-on-chip devices. A microcontroller is a single integrated circuit containing a CPU core, memory, and peripherals dedicated to embedded control tasks. The CY8C3445 sits in the embedded microcontroller hierarchy (8-bit MCU -> microcontroller -> embedded processor -> semiconductor) and, in PSoC 3, it adds a configurable array of analog and digital blocks. That array replaces the fixed-function peripherals found in older 8051 parts with programmable analog amplifiers, ADC and DAC blocks, comparators, timers, and serial interfaces that are routed by firmware rather than fixed by silicon. Key features of the CY8C3445AXE-181 include the 50 MHz 8051 core with dedicated multiplier/accumulator hardware, 32 KB of flash for program storage, a wide 1.71 V to 5.5 V operating supply range, and the PSoC 3 configurable peripheral array with its characteristic low-leakage sleep modes and fast GPIO. Because the analog blocks are programmable, one device can serve as a mixed-signal controller for touch sensing, motor drive, and signal conditioning without external analog ICs. Technically, the CY8C34xx family is built around a small-footprint 8051 core that reaches 50 MHz using a pipelined architecture with separate multiplier and divider blocks. The configurable block array is connected through a routing fabric, so peripheral placement and pin assignment are decided in the PSoC Creator design tool rather than fixed at manufacture. This is the core architectural difference versus a conventional 8051 such as the AT89C51, where timers, UARTs, and ADC channels are hard-wired to fixed pins. Typical applications include automotive body control modules, sensor-hub and condition-monitoring nodes, industrial control panels, building automation endpoints, and low-power IoT sensing nodes where the programmable analog front end reduces the bill of materials. The 100-lead TQFP footprint exposes enough GPIO and analog-capable pins to bring out multiple mixed-signal channels simultaneously. A key design consideration is that the PSoC Creator toolchain and the generated configuration data must accompany the firmware image; the on-chip configuration is programmed at boot, so field updates need to include the configuration flash content alongside the application code. Users should also confirm the exact pin multiplexing of their chosen configuration against the 100-pin TQFP pinout. This page consolidates verified distributor pricing and availability for CY8C3445AXE-181 as of 2026-10-30, pin-compatible drop-in alternatives from the same PSoC 3 family, a parameter-by-parameter comparison, and practical design notes that go beyond the manufacturer datasheet.

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CY8C3445AXI-108

CY8C3445AXI-108 - 50MHz PSoC 3 MCU | Infineon

Infineon Technologies CY8C3445AXI-108 is an 8-bit PSoC 3 CY8C34-series programmable system-on-chip microcontroller with a 50 MHz operating frequency, 32 KB flash memory, 4 KB SRAM, and a 100-pin TQFP package measuring 14 x 14 mm. The device combines an 8051-compatible microcontroller core with programmable digital and analog system resources, making it suitable for embedded control designs requiring more integration than a conventional microcontroller. A programmable system-on-chip, or PSoC, is a mixed-signal microcontroller family that integrates a processor core, programmable digital blocks, analog resources, and configurable peripherals into one device. Its position in the semiconductor hierarchy is microcontroller -> programmable system-on-chip -> mixed-signal embedded controller. This integration can reduce the number of external components required when a design needs digital control, signal conditioning, data acquisition, or programmable timing. The verified device data identifies an 8-bit 8051 architecture, operation from DC to 50 MHz, 32 KB of flash, and 4 KB of SRAM. The 50 MHz maximum operating frequency provides a defined performance ceiling for timing-sensitive control tasks, while 32 KB of flash supplies embedded program storage and 4 KB of SRAM supports working memory. The operating-voltage range is 1.71 V to 5.5 V, allowing the device to operate across common low-voltage embedded systems. The CY8C3445AXI-108 is packaged in a 100-pin TQFP with a 14 x 14 mm body. This relatively high pin count provides access to the device's digital and analog resources, including external interfaces and programmable I/O paths. A 100-pin surface-mount package is more appropriate than a small-outline package when a design requires broad peripheral access or dedicated analog routing. Typical uses include industrial control modules, sensor-conditioning systems, digital power controllers, communications equipment, and compact embedded automation platforms. The PSoC architecture is particularly useful when a board must combine deterministic digital control with programmable analog acquisition or conversion. Firmware configuration determines how the available digital and analog blocks are assigned to the intended signal chain. Designers should verify the complete pin assignments, exposed power requirements, supported clock configurations, and decoupling requirements against the manufacturer datasheet before layout. Decoupling capacitors should be placed directly beside their associated supply pins, while sensitive analog inputs require short traces, controlled grounding, and separation from fast digital switching paths. Firmware and peripheral configuration must also be validated at the intended 1.71 V to 5.5 V supply conditions. This product page combines verified distributor specifications, source links, application guidance, and a conservative drop-in assessment. It explicitly distinguishes documented CY8C3445AXI-108 data from unavailable pin-level details and avoids presenting unverified cross-brand replacements as guaranteed drop-in equivalents.

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