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CY8C26643-24AI - 8-Bit 24MHz 16KB PSoC | Infineon
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 - 8-bit PSoC 1 MCU, 24MHz, 16KB Flash | Infineon
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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CY8C29466-24PVXA - 8-Bit M8C PSoC1 MCU 32KB Flash 24MHz | Infineon
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 - PSoC1 8-bit 24MHz 32KB Flash MCU | Infineon
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 - PSoC 1 8-bit MCU, 32KB Flash, 24MHz | Infineon
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 - 8-bit PSoC1 MCU 32KB Flash 24MHz | Infineon
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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CY8C3866AXI-035 - 8051 PSoC 3 MCU 64KB Flash 67MHz | Infineon
CY8C3866AXI-035

CY8C3866AXI-035 - 8051 PSoC 3 MCU 64KB Flash 67MHz | Infineon

The Infineon CY8C3866AXI-035 is a member of the PSoC 3 family of programmable system-on-chip devices, integrating an 8-bit 8051 core running up to 67 MHz with 64 KB of Flash program memory, 8 KB SRAM, 1 KB data EEPROM, and a rich mix of programmable analog and digital peripherals in a 100-pin TQFP (14x14 mm) package. The 8051 core pairs with a DMA controller and digital filter processor (DFP) for high-throughput signal processing while keeping the architecture easy to program with standard 8051 toolchains. What is a PSoC (Programmable System-on-Chip)? A PSoC is a microcontroller family that combines a CPU core with configurable analog blocks (ADCs, DACs, op-amps, comparators) and configurable digital blocks (UDBs, timers, UART/SPI/I2C) on a single die. The 'system-on-chip' hierarchy is: PSoC -> mixed-signal MCU -> microcontroller -> embedded processor -> semiconductor. PSoC 3 specifically uses the legacy-friendly 8051 core with industry-best ultra-low-power operation and wide voltage tolerance, making it a versatile platform for industrial, consumer, and white-goods designs. Key features of the CY8C3866AXI-035 include: 24 Universal Digital Blocks (UDBs) for custom logic, timers and state machines; one CAN 2.0b interface; 1.71 V to 5.5 V operating voltage range with on-chip voltage regulation; up to 62 GPIO; industrial temperature grade (-40 C to +85 C); and four Flash protection levels with 8 KB ECC Flash. The single-cycle 8051 core, dual data pointers, and integrated PHUB with eight spokes enable efficient DMA-driven data movement without CPU overhead. Typical applications include industrial control, motor drive signal conditioning, sensor hubs, USB/CAN bridges, and human-machine interface (HMI) front-ends where the analog and digital configurability of PSoC reduces BOM cost and PCB area. Its 0.5 V to 5.5 V supply tolerance allows direct connection to batteries, regulated 3.3 V rails, and legacy 5 V logic in mixed-voltage systems. When designing with the CY8C3866AXI-035, allocate the 24 UDBs early in the schematic phase because they are the device's most constrained resource, and respect the 100-pin TQFP decoupling scheme (one 100 nF per power pin). For new designs, consider the newer PSoC 4000S/4100S families only if your firmware is portable to ARM Cortex-M0+; otherwise, the CY8C3866AXI-035 remains a strong, mature 8051-based mixed-signal choice. This page synthesizes distributor pricing, drop-in alternatives within the PSoC 3 family, and practical design notes not aggregated on any single vendor page.

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CY8C3866AXI-040 - 8051 PSoC 3, 64KB Flash, 67MHz | Infineon
CY8C3866AXI-040

CY8C3866AXI-040 - 8051 PSoC 3, 64KB Flash, 67MHz | Infineon

The Infineon CY8C3866AXI-040 is an 8-bit 8051-based PSoC 3 (CY8C38xx family) programmable system-on-chip MCU integrating 64KB Flash, 8KB SRAM, 2KB EEPROM, and configurable analog/digital/LCD blocks, all in a 100-pin TQFP (14x14 mm) package with an industrial operating temperature range. A PSoC (Programmable System-on-Chip) is a category of mixed-signal microcontroller in which the analog and digital peripheral functions are defined by routing through universal analog and digital blocks rather than fixed silicon. PSoC 3 devices specifically pair an 8051 core with high-performance programmable analog (operational amplifiers, ADCs, DACs, comparators, CapSense), programmable digital (UDBs, timers, PWM, UART, SPI, I2C, CAN, USB, LCD), and on-chip memory, sitting in the hierarchy: PSoC 3 -> mixed-signal MCU -> microcontroller -> embedded IC -> semiconductor. This makes them true system-level solutions because the same silicon can implement different peripheral sets in hardware through programmable routing. Key features include an 8051 single-core CPU running up to 67MHz, 64KB program Flash with ECC, 8KB SRAM, and up to 2KB EEPROM. The device integrates a 12-bit SAR ADC with up to 1 Msps, multiple 8-bit IDACs, four op-amps, four configurable TCPWM blocks, full-speed USB, CAN 2.0b, and an LCD driver supporting up to 46 segments x 4 commons. Operating voltage is 0.5V to 5.5V with industrial-grade temperature range. The architecture combines an 8051 core with a DMA controller (PHUB) supporting 8 parallel access paths, eliminating CPU stalls during data movement between peripherals and memory. The Universal Digital Blocks (UDBs) implement custom state machines and datapaths in Verilog-equivalent primitives, while the Universal Analog Blocks (UABs) configure op-amps, comparators and references. Typical applications include industrial HMI panels with LCD and CapSense, USB peripherals (HID, CDC, vendor class), CAN-based automotive body controllers, programmable sensor signal conditioners, and low-power battery-powered instruments. Designers value the integrated LCD + touch + analog front end that would otherwise require 3-4 separate ICs. A key design consideration is that PSoC 3 development requires PSoC Creator IDE with the CY8C38xx component catalog - bare-metal 8051 register code does not exercise the programmable routing. Plan toolchain availability before committing to architecture. This page synthesizes Infineon distributor pricing, Infineon-documented drop-in alternatives in the same 100-TQFP footprint, and PSoC Creator-aware design notes not found in the manufacturer datasheet alone.

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CY8C3866PVI-021 - PSoC 3 8051 64KB Flash 67MHz MCU | Infineon
CY8C3866PVI-021

CY8C3866PVI-021 - PSoC 3 8051 64KB Flash 67MHz MCU | Infineon

The Infineon CY8C3866PVI-021 is a CY8C38xx PSoC 3 programmable system-on-chip featuring a single-core 8051 CPU at up to 67 MHz, 64 KB of Flash program memory, 8 KB SRAM, and 1 KB EEPROM, all integrated into a 48-pin SSOP package. The part combines an 8-bit 8051 core with rich programmable analog (20-bit Delta-Sigma ADC, 12-bit SAR ADC) and programmable digital blocks (UDBs), making it suitable for mixed-signal embedded applications where software flexibility matters. The wide 0.5V to 5.5V operating voltage range, integrated USB 2.0 Full-Speed peripheral, and CapSense support further reinforce its applicability to industrial control, USB HID, and human-interface designs. What is a PSoC? PSoC (Programmable System-on-Chip) is a family of microcontrollers that integrate a CPU core (8051, ARM Cortex-M0/M3/M4 depending on generation) with a programmable analog and digital fabric. PSoC 3 is the 8-bit 8051-based generation, while PSoC 4 (Cortex-M0), PSoC 5LP (Cortex-M3), and PSoC 6 (Cortex-M4 + M0+) are the more recent families. PSoC 3 sits in the hierarchy: PSoC 3 -> PSoC family -> programmable SoC -> microcontroller -> embedded IC -> semiconductor. The configurable fabric allows routing of analog blocks (op-amps, ADCs, DACs, comparators) and digital blocks (timers, UARTs, SPIs, PWMs) via on-chip interconnect, replacing many discrete components. Key features of the CY8C3866PVI-021 include 24 Universal Digital Blocks (UDBs), 4 DMA channels with a Peripheral Hub Unit (PHUB) providing 8 parallel access spokes, a 67 MHz maximum CPU clock, 27 interrupt sources with 8 priority levels, integrated Full-Speed USB 2.0, and 4 levels of Flash protection. The IC also integrates a 20-bit Delta-Sigma ADC plus a 12-bit SAR ADC, two 8-bit IDACs, four 7-bit VDACs, and four unity-gain op-amps configurable as PGAs, TIA, or comparators. Up to 62 GPIO are available depending on package. Typical use cases for the CY8C3866PVI-021 include industrial motor and pump drivers, USB-enabled embedded peripherals, smart sensors and CapSense touch interfaces, programmable logic replacements, mixed-signal data acquisition front-ends, and human-machine interface (HMI) panels. When designing with this part, note that the 8051 core is 8-bit and slower than modern Cortex-M alternatives, but the integrated analog fabric and Infineon/Cypress PSoC Creator toolchain accelerate development of mixed-signal products where analog pins are a priority. For pure digital or low-power designs, an ARM-based PSoC 4/6 is usually a better choice. This page synthesizes distributor pricing, drop-in alternatives in the same 48-SSOP package, and practical design notes that go beyond the manufacturer datasheet alone.

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CY8C4124PVI-432T - PSoC 4100 24MHz 16KB Flash MCU | Infineon
CY8C4124PVI-432T

CY8C4124PVI-432T - PSoC 4100 24MHz 16KB Flash MCU | Infineon

The Infineon CY8C4124PVI-432T is a PSoC 4100 family microcontroller built on an ARM Cortex-M0 core running at 24 MHz, integrating 16 KB of flash and 4 KB of SRAM in a 28-pin SSOP package. It combines a programmable analog front end (12-bit SAR ADC at 806 ksps, plus opamps, comparators and CapSense touch support), programmable digital peripherals (four 16-bit TCPWM blocks, multiple serial interfaces) and a versatile routing fabric that lets any GPIO be mapped to any analog or digital peripheral. The part ships in 28-SSOP for surface-mount designs and is offered in tape-and-reel packaging (the trailing 'T' suffix). A Programmable System-on-Chip (PSoC) is a mixed-signal MCU that pairs a Cortex-class core with configurable analog and digital blocks routed through a programmable interconnect. Within the broader hierarchy, PSoC 4 sits between simple Cortex-M0 microcontrollers (no analog fabric) and higher-tier PSoC 6 devices (Cortex-M4 with BLE). The PSoC 4100 family is the entry-level analog-rich tier, optimized for human-machine interface (HMI), capacitive touch sensing and sensor signal conditioning in cost-sensitive applications. Key specifications include 24 MHz maximum CPU clock, 16 KB flash, 4 KB SRAM, 24 GPIOs, a 12-bit SAR ADC capable of 806 ksps, two low-power operational amplifiers, two comparators, four configurable 16-bit TCPWM blocks and serial blocks supporting I2C, UART and SPI. The 28-SSOP package exposes 24 user I/O pins while keeping a small footprint suitable for hand-held and industrial modules. The CY8C4124PVI-432T targets applications that need on-chip analog signal conditioning alongside a low-power MCU. CapSense touch buttons, sliders and proximity sensors map directly to the device's CapSense and IDAC blocks, while general-purpose sensor signal chains use the on-chip opamps and 12-bit ADC for amplification and conversion. A real-time Cortex-M0 core then handles housekeeping, communication and timing. Typical applications include capacitive touch user interfaces, low-power IoT sensor nodes, battery-powered HMI panels, white-goods control boards and simple industrial sensor conditioning. Designers typically pair the part with a low-dropout regulator, a debug SWD header and a small EEPROM or external flash when firmware growth is anticipated beyond 16 KB. When designing with this part, reserve at least two pins for SWDIO/SWCLK debug access, follow Infineon's 10/100 rule for VDD decoupling, and consult the PSoC 4100 family datasheet for CapSense layout guidelines including ground flooding, hatched fill and guard rings. This page synthesizes distributor pricing, drop-in alternatives and practical design notes not found in the standalone manufacturer datasheet.

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CY8C4127AXI-S443 - 24MHz Cortex-M0+ 128KB PSoC 4100S Plus MCU
CY8C4127AXI-S443

CY8C4127AXI-S443 - 24MHz Cortex-M0+ 128KB PSoC 4100S Plus MCU

The Infineon (formerly Cypress Semiconductor) CY8C4127AXI-S443 is an automotive-qualified 32-bit ARM Cortex-M0+ microcontroller from the PSoC 4100S Plus family, integrating 128 KB of Flash and 16 KB of SRAM in a 44-pin TQFP (10x10 mm) package. It features a 12-bit SAR ADC, programmable analog and digital blocks (universal digital blocks), and operates at up to 24 MHz CPU clock. The device supports an operating voltage range suitable for automotive HMI and body electronics applications, combining a microcontroller with PSoC-style programmable fabric on a single die. A PSoC 4 MCU is a programmable system-on-chip that pairs an Arm Cortex-M0 or Cortex-M0+ core with a fabric of universal digital blocks (UDBs) and configurable analog resources. Unlike fixed-function microcontrollers, the PSoC 4 architecture allows developers to instantiate custom peripherals - timers, PWMs, UARTs, I2C slaves, logic functions - in programmable hardware, reducing BOM cost and PCB area. The PSoC 4100S Plus specifically extends the PSoC 4000S line with more memory, a 12-bit (instead of 10-bit) SAR ADC, and a richer CapSense touch-sensing subsystem for HMI user-interface designs. Key features of the CY8C4127AXI-S443 include 128 KB (128K x 8) of Flash program memory, 16 KB of SRAM, a 12-bit SAR ADC with up to 8 input channels, multiple serial communication blocks (SCBs) configurable as I2C/UART/SPI, and on-chip CapSense hardware for capacitive touch sensing. The 44-TQFP package provides 36 GPIO and an exposed pad for thermal dissipation, while the automotive grade supports AEC-Q100 reliability requirements for in-cabin and body applications. Typical applications include automotive HMI (human-machine interface) such as touch buttons, sliders, and proximity sensors on steering wheels or center consoles, capacitive touch keypads for white goods and small kitchen equipment, industrial control panels with capacitive user interfaces, LED lighting controllers, LED regulators with mixed analog/digital feedback, and low-power IoT sensor nodes. The wide CapSense integration also suits proximity-sensing designs in security and occupancy-detection products. When designing with this device, plan the CapSense sensor layout carefully - sensor patterns, ground flooding, and overlay material selection directly affect touch sensitivity. Use the PSoC Creator / ModusToolbox IDE with the CapSense middleware for tuning the capacitive, operating system-level firmware, and PSoC 4 peripheral driver library to reduce development time.

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CY8C4146AZI-S443 - PSoC 4100S Plus 64KB Flash MCU | Infineon
CY8C4146AZI-S443

CY8C4146AZI-S443 - PSoC 4100S Plus 64KB Flash MCU | Infineon

The Infineon CY8C4146AZI-S443 is a PSoC 4100S Plus microcontroller built around an Arm Cortex-M0+ core running at 48 MHz, integrating 64 KB of flash and 32 KB of SRAM in a 48-pin TQFP (7x7 mm) package. It belongs to the PSoC 4 family and is targeted at HMI applications with capacitive touch support, programmable analog blocks, and configurable digital peripherals that replace many external components. The 'S443' ordering suffix defines the temperature grade, memory configuration, and peripheral mix specified for this SKU. A PSoC (Programmable System-on-Chip) combines a microcontroller core with analog and digital fabric blocks that can be routed through programmable interconnect, allowing designers to build custom mixed-signal front-ends without discrete analog ICs. Within the broader taxonomy, a PSoC 4100S Plus device is a low-power 32-bit MCU -> Cortex-M0+ microcontroller -> ARM-based MCU -> microcontroller IC -> integrated circuit. This device family is engineered for cost-sensitive embedded designs that still require user-interface features, motor-control loops, or sensor-signal conditioning on a single die. Key features of the CY8C4146AZI-S443 include a 12-bit SAR ADC (1 MSPS) with up to 16 channels, four op-amps, four 8-bit DACs, two comparators, CapSense touch sensing hardware, and a USB Full-Speed device controller. Communication peripherals include I2C, SPI, UART, and CAN, giving flexibility for industrial and consumer HMI applications. The integrated low-power modes enable deep-sleep currents in the microamp range for battery-powered designs. Typical applications for this part include capacitive-touch user interfaces on white goods and appliances, automotive airbag ECUs and body-control modules, industrial sensor hubs, and small motor-control boards. The wide operating temperature range and robust peripheral set make it suitable for safety-relevant subsystems where a single MCU handles HMI, sensing, and actuator control. When designing with this part, ensure the CapSense tuning and routing guidelines in the PSoC 4100S Plus family datasheet are followed to achieve reliable touch SNR. Use Infineon's PSoC Creator or ModusToolbox for firmware development, peripheral configuration, and CapSense tuning to shorten time-to-prototype.

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CY8C4244PVI-442 - PSoC 4200 48MHz Cortex-M0 MCU | Infineon
CY8C4244PVI-442

CY8C4244PVI-442 - PSoC 4200 48MHz Cortex-M0 MCU | Infineon

The Infineon CY8C4244PVI-442 is a PSoC 4200 family microcontroller built around an ARM Cortex-M0 core running at up to 48 MHz, integrating 16 KB of flash and 4 KB of SRAM in a 28-pin SSOP package. It features a 12-bit SAR ADC sampling at up to 1 Msps, four 16-bit timer/counter/PWMs, two configurable universal digital blocks (UDBs), a USB Full-Speed device controller, and Infineon's signature CapSense touch-sensing hardware, all routable through the programmable digital and analog fabric. A PSoC (Programmable System-on-Chip) is a mixed-signal MCU family that combines a CPU core with a configurable fabric of analog and digital blocks, enabling engineers to instantiate custom peripherals such as op-amps, comparators, DACs, PWMs and timers without discrete external components. PSoC 4200 sits within Infineon's broader MCU hierarchy (Cortex-M0 -> ARM Cortex family -> 32-bit microcontroller -> embedded system-on-chip), and it is positioned as the cost-optimized entry point below PSoC 4100/4100S/4100M and above PSoC 4000S, balancing analog performance with low power consumption. Key features include operation from 1.71 V to 5.5 V supply (3.3 V/5 V tolerant I/O), low-power modes with down to 60 nA hibernate current, a USB 2.0 Full-Speed device with internal pull-up resistor, hardware I2C/SPI/UART, and an internal main oscillator trimmed to 0.25% accuracy across voltage and temperature. The 28-SSOP footprint is a compact, gull-wing surface-mount package suitable for hand-soldered prototypes and reflow production alike, with the exposed pad providing an additional thermal path for high-activity applications. The architecture pairs the Cortex-M0 core with a digital system interconnect that can route any GPIO to any peripheral through the UDB fabric - effectively turning the device into a custom-logic-plus-MCU hybrid. The 12-bit SAR ADC, two op-amps and two comparators (referenced in the broader 4200 family datasheet) eliminate the need for external signal conditioning, while hardware CapSense enables touch-button and slider interfaces without dedicated touch ICs. Typical applications include USB Human Interface Devices (HID) such as mice, keyboards and game controllers, CapSense touch-button control panels for white goods and industrial front panels, sensor conditioning nodes for IoT edge devices, low-cost motor control for small BLDC or stepper fans, and digital power conversion feedback loops. The wide 1.71-5.5 V supply range also makes the part suitable for direct connection to single-cell Li-ion or 3.3 V/5 V regulated rails without level shifters. When designing with this device, plan for CapSense tuning using Infineon's CY8CKIT-145-40XX prototyping kit and the PSoC Creator IDE; route unused GPIO to fixed states with the internal pull-up/down to avoid spurious wake-ups. For USB applications, ensure the 5 V VBUS rail is decoupled within 25 mm of the VBUS pin, and verify the firmware uses the integrated USB regulator at 3.3 V rather than an external LDO if board area is constrained. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet - including parametric comparisons versus cross-brand ARM Cortex-M0 MCUs in the same 28-SSOP footprint.

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CY8C4245AXI-483 - 32KB Flash PSoC 4200 MCU | Infineon
CY8C4245AXI-483

CY8C4245AXI-483 - 32KB Flash PSoC 4200 MCU | Infineon

The Infineon CY8C4245AXI-483 is a PSoC™ 4200 family microcontroller built around a 32-bit ARM Cortex-M0 core running up to 48 MHz, integrating 32 KB Flash and 4 KB SRAM, housed in a 44-pin TQFP (10x10 mm) package (suffix AQI = industrial temperature, 483 = specific die variant). It is part of the PSoC 4 platform that combines a Cortex-M0 CPU with programmable analog and digital blocks (Universal Digital Blocks and Analog Blocks) and a standard Cortex-M0 subsystem, making it a true programmable system-on-chip for embedded designs. A PSoC (Programmable System-on-Chip) is a microcontroller family in which the analog and digital peripherals are defined by reconfigurable hardware blocks rather than fixed-function IP. PSoC 4 specifically pairs an ARM Cortex-M0 core with Cypress/Infineon's UDB and AB blocks, sitting in the hierarchy: microcontroller -> embedded MCU -> ARM Cortex-M MCU -> PSoC 4 family -> PSoC 4200 series. The CY8C4245AXI-483 represents one of the higher-density flash parts in the 4200 series. Key features include 32 KB Flash, 4 KB SRAM, 36 programmable GPIO, two op-amps and two comparators in the analog subsystem, four Timer/Counter/PWM blocks, a USB Full-Speed peripheral (note the absence), I2C, SPI, UART, and a 12-bit 1 Msps SAR ADC. Drive modes, drive strengths, and slew rates are all programmable, giving PCB designers flexibility for signal integrity. Extended Industrial temperature range -40°C to +105°C is supported per the package suffix. The technical architecture combines the ARM Cortex-M0 core (Thumb-2 instruction set, single-cycle 32x32 multiplier) with the PSoC fabric of UDBs, programmable routing, and a 12-bit DAC-capable IDAC. A capacitive sensing block (CapSense) supports touch and proximity user interfaces directly without external components, which is why PSoC 4200 parts dominate home appliance and white-goods touch-panel designs. Typical applications include home appliance user interfaces (CapSense buttons/sliders), white goods motor control front-ends, smart sensor hubs, industrial HMI panels, low-cost BLE/Sub-GHz sensor nodes (as host MCU), and capacitive proximity/gesture interfaces. The wide -40°C to +105°C operating range also suits outdoor or garage cabinet electronics. Selection typically favors the CY8C4245 when more flash (32 KB) is required than the CY8C4244 (16 KB) or CY8C4135/4125 (lower pin-count or flash-density variants). A key design consideration is that TQFP-44 is the largest of the five package options offered in the 4200 family; designers migrating to a smaller PCB can substitute the CY8C4245AXI-483 with the Q41-A48 40-pin QFN or 28-pin SSOP at the expense of GPIO count. The 483 suffix refers to a specific firmware feature subset and should be verified against the PSoC Creator 4.x component catalog rather than chosen arbitrarily. This page synthesizes distributor pricing, same-package drop-in variants (CY8C4245AXI-483T, CY8C4245AXI-482), other-density 4200 family members, and practical design notes not found in the standalone manufacturer datasheet.

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CY8C4246AZI-M445 - 48MHz PSoC 4200M MCU, 64KB Flash | Infineon
CY8C4246AZI-M445

CY8C4246AZI-M445 - 48MHz PSoC 4200M MCU, 64KB Flash | Infineon

Infineon's CY8C4246AZI-M445 is a 32-bit ARM Cortex-M0 PSoC 4200M microcontroller operating at 48 MHz with 64 kB Flash and 8 kB SRAM, housed in a 64-pin TQFP (10x10 mm) package. The device targets motor control and residential air-conditioner applications, with 36 programmable analog and digital blocks, four op-amps, four DACs, four SCs, four comparators, and two CapSense blocks. It operates across an industrial temperature range of -40C to +105C with 1.71V to 3.6V supply. A Programmable System-on-Chip (PSoC) is a mixed-signal MCU that combines an ARM Cortex-M core with configurable analog and digital Universal Digital Blocks (UDBs), allowing designers to instantiate peripherals such as PWMs, UARTs, and timers in firmware rather than committing to fixed silicon peripherals. PSoC devices sit in the wider hierarchy of microcontrollers -> MCUs -> embedded processors -> semiconductors. This flexibility distinguishes PSoC from fixed-peripheral MCUs and is the reason PSoC 4200M devices dominate capacitive-touch and motor-control subsystems where a hardware base must include mixed-signal front-ends alongside the CPU. The CY8C4246AZI-M445 includes integrated programmable analog front-ends, two IDACs, two VDACs, four op-amps, four comparators, and four configurable switch-cap blocks (SCs), enabling direct sensor signal paths on the same die. The -M445 ordering code specifically configures internal routing targeting FOC (field-oriented control of BLDC) and PFC (power-factor correction) firmware libraries, making this part especially suited for motor-control designs. Typical applications include BLDC/PMSM motor control for HVAC compressors, fan control, pumps, and home appliances; IoT edge nodes; smart sensors; lighting control; and human-machine interface (HMI) with CapSense. The wide operating voltage and temperature make this device suitable for both industrial and consumer product lines. When designing with the CY8C4246AZI-M445, pay attention to the configurable analog block routing, ensure the SWD/JTAG programming header is accessible, and follow Infineon's PSoC Creator / ModusToolbox schematic-capture guidelines for the analog routing fabric. Decouple your supply with 100 nF + 1 uF close to each VDD pin. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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CY8C4246AZI-M475 - 48MHz Cortex-M0 PSoC 4200M MCU | Infineon
CY8C4246AZI-M475

CY8C4246AZI-M475 - 48MHz Cortex-M0 PSoC 4200M MCU | Infineon

The Infineon CY8C4246AZI-M475 is a PSoC 4200M family microcontroller built on an ARM Cortex-M0 core running at 48 MHz, integrating 64 kB of flash and 8 kB of SRAM into a 64-TQFP (10x10 mm) package. According to the manufacturer product page, this part targets white-goods and air-conditioning motor control applications that demand a combination of a deterministic Cortex-M0 CPU, programmable analog, and configurable digital peripherals on a single die. The M475 suffix indicates the aircon-specific firmware derivative; the underlying silicon is shared with the wider PSoC 4200M family. A PSoC (Programmable System-on-Chip) is a category of mixed-signal microcontrollers that pairs a conventional MCU core with universal analog blocks (op-amps, ADCs, DACs, comparators) and universal digital blocks (UDBs - PLD-style state machines and timers) connected by a programmable interconnect fabric. PSoC 4 sits in the hierarchy Cortex-M0 MCU -> programmable SoC -> mixed-signal microcontroller -> embedded controller, and is distinct from a Cortex-M0 MCU in that several analog and digital peripherals are realized in software-configurable routing on the die rather than as hardwired IP. This fabric lets one silicon part serve multiple motor-control, sensor-interface, and HMI topologies without external analog components. Key features of the CY8C4246AZI-M475 include 64 kB flash, 8 kB SRAM, a 1.71 V to 5.5 V supply range that supports both 3.3 V and 5 V designs, integrated op-amps and comparators for current sensing, multiple PWM channels with dead-band logic for inverter drive, and a CAN-capable communications block (depending on family variant). The Cortex-M0 core delivers 0.93 DMIPS/MHz and the part includes a USB-of-PSoC serial-wire debug interface. Programmable analog lets designers configure SAR ADCs and continuous-time blocks (CTBm) at compile time rather than selecting discrete op-amps. Typical applications are field-oriented control (FOC) of permanent-magnet synchronous motors (PMSM) used in residential air conditioners, washing-machine drum drives, and refrigerator compressors. The 8 kB SRAM and 64 kB flash budget accommodate single-shunt or dual-shunt sensorless FOC firmware with observer state machines. Programmable analog blocks can be configured as current-sense amplifiers with on-chip gain resistors, and UDB-based dead-band generators drive the three-phase inverter directly without an external gate-driver logic IC for low-voltage sub-50 V systems. Designers should plan for 1 square inch of copper under the TQFP-64 thermal pad and route the high-current switching nets away from the analog ground island. This page consolidates Infineon parametric data, distributor stock across DigiKey, Mouser and LCSC, and drop-in same-package alternatives that simplify second-source qualification. --- This page synthesizes distributor pricing across DigiKey, Mouser and LCSC, same-package drop-in alternatives from the PSoC 4200M family, and PCB design notes that are not found in the manufacturer datasheet.

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CY8C4247AZI-L423ES - PSoC 4200L MCU 48MHz 128KB | Infineon
CY8C4247AZI-L423ES

CY8C4247AZI-L423ES - PSoC 4200L MCU 48MHz 128KB | Infineon

The Infineon CY8C4247AZI-L423ES is a low-power PSoC® 4200L programmable system-on-chip based on the 32-bit ARM® Cortex®-M0 core, integrating 128 KB of Flash and 16 KB of SRAM in a 48-pin TQFP (7x7 mm) package. The device supports a CPU clock up to 48 MHz and combines programmable analog blocks, a 12-bit SAR ADC, a low-power comparator, and CapSense® touch-sensing hardware with flexible automatic routing between analog and digital resources. The integrated USB 2.0 Full-Speed peripheral and segment LCD driver make it suitable for human-interface and battery-powered products. A PSoC (Programmable System-on-Chip) is a microcontroller family that pairs a conventional MCU core with Universal Digital Blocks (UDBs) and Universal Analog Blocks (UABs) that the developer can wire into custom peripherals at compile time. Within the broader taxonomy, the PSoC 4200L belongs to the PSoC 4 family, which itself sits under 32-bit ARM Cortex-M microcontrollers and the wider microcontroller and embedded-system hierarchy. This combination of a Cortex-M0 CPU with reconfigurable analog fabric differentiates PSoC from fixed-peripheral MCUs and lets one silicon part implement multiple product variants without board changes. Key features include active power consumption below 1.2 mA at 3 MHz and a deep-sleep mode of 1.1 µA with SRAM retention. The 12-bit 1 Msps SAR ADC has 16 channels and is supported by four op-amps, two low-power comparators, two 8-bit IDACs, and two 7.5/12-bit VDACs. Communication peripherals include two I2C, three UART, two SPI, USB Full-Speed, CAN, and 36 GPIO with Smart I/O. The device operates from 1.71 V to 5.5 V and the L-series variant adds a segment LCD driver, larger memory and a USB controller compared with baseline PSoC 4000S parts. The architecture uses a Cortex-M0 core with a 2-cycle 32x32 multiplier and a nested vector interrupt controller. Programmable logic is implemented through UDBs containing PLDs and datapath elements, while analog is implemented through switched-capacitor and continuous-time UABs. This allows peripherals such as custom PWM, quadrature decoders, or sensor front-ends to be synthesized in firmware without an external FPGA or ASIC. Typical applications include capacitive touch buttons, sliders and proximity sensors for white goods and wearables; USB HID peripherals such as mice, keyboards, and game controllers; low-power glucose meters and portable medical devices; segment-LCD human-machine interfaces for thermostats and instrumentation; and CAN-connected industrial sensor nodes. The device is also used in BLDC fan control and small appliance motor drive subsystems. A key design consideration is power-budget planning: the low-power modes require the wakeup source and GPIO retention to be configured before sleep, and CapSense® electrodes should be routed with a guarded ground ring to maintain touch SNR. Designers should also evaluate the internal 1.71 V core regulator headroom when the I/O supply is dropped near 1.8 V. This page synthesizes distributor availability, parametric comparison, and PCB-level design notes not collected in the manufacturer datasheet alone, so procurement and engineering teams can shorten the make-or-buy decision for a CY8C4247AZI-L423ES-based design.

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CY8C4247AZI-L423T - PSoC 4200L 128KB Flash MCU | Infineon
CY8C4247AZI-L423T

CY8C4247AZI-L423T - PSoC 4200L 128KB Flash MCU | Infineon

The Infineon CY8C4247AZI-L423T is a PSoC 4200L programmable system-on-chip featuring an ARM Cortex-M0 CPU core running at 48 MHz, 128 KB Flash, 16 KB SRAM, and 32 DMA channels, housed in a 48-pin TQFP (7x7 mm) package. It integrates programmable analog and digital blocks with flexible automatic routing, enabling configurable mixed-signal designs in a single chip. A PSoC (Programmable System-on-Chip) is a microcontroller family that combines a CPU core with a fabric of programmable analog and digital Universal Digital Blocks (UDBs) and configurable analog peripherals such as op-amps, ADCs, DACs, and comparators. The PSoC 4200L sits within the broader hierarchy: PSoC 4 -> ARM Cortex-M0 MCU family -> 32-bit microcontroller -> embedded controller -> semiconductor IC. This integration lets designers replace multiple discrete analog ICs with software-reconfigurable on-chip resources. Key features of the CY8C4247AZI-L423T include a 12-bit SAR ADC with up to 1 Msps sample rate, 4 op-amps, 4 configurable Timer/Counter/PWM blocks, 2 IDAC channels, and a 2.4V to 5.5V operating voltage range. The device also offers capacitive touch sensing (CapSense) capability, USB device support via the integrated USB 2.0 Full-Speed peripheral, and Cryptographic AES hardware block. The wide operating range and rich analog make it suitable for consumer, industrial, and IoT end products. The device uses a Cortex-M0 core with single-cycle GPIO access, deterministic interrupt handling, and a low-power Sleep mode drawing microamp-level currents. The programmable logic (UDB) layer connects analog and digital resources via the Digital System Interconnect (DSI) matrix, allowing functions like PWM, UART, SPI, or I2S to be implemented in hardware without external peripherals. The 128 KB Flash is organized as 128K x 8 and supports in-application programming via the bootloader. Typical applications include CapSense touch buttons and sliders for appliances and wearables, USB HID peripherals such as mice and keyboards, sensor hub and signal conditioning nodes, motor control firmware for small DC and stepper motors, and LED lighting controllers requiring analog dimming. The wide 1.71V-5.5V supply range and integrated analog front end simplify BOM in mixed-signal designs. Design with the CY8C4247AZI-L423T using PSoC Creator IDE or ModusToolbox. Pay attention to decoupling: place 0.1 uF and 1 uF ceramics adjacent to each VDD pin, and follow CapSense layout guidelines (guard ring, ground flood, no traces under sensors) for robust touch performance. The 48-pin TQFP is footprint-compatible with several PSoC 4200L family variants, simplifying upgrades. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, application-specific design notes, and selection guidance that go beyond the manufacturer datasheet, helping engineers source, compare, and integrate the CY8C4247AZI-L423T quickly.

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CY8C4247AZI-L445 - 48MHz ARM Cortex-M0 PSoC 4200L MCU, 128KB Flash | Infineon
CY8C4247AZI-L445

CY8C4247AZI-L445 - 48MHz ARM Cortex-M0 PSoC 4200L MCU, 128KB Flash | Infineon

The Infineon CY8C4247AZI-L445 is a PSoC™ 4200L programmable system-on-chip featuring an ARM® Cortex®-M0 CPU core running at 48 MHz, 128 KB of program flash, and 16 KB of SRAM, integrated into a 64-pin TQFP (10x10 mm) package. It combines a configurable analog and digital fabric, 4 programmable analog blocks, 4 programmable digital blocks, and a USB-centric control set that targets low-power human-interface and sensing applications. What is a PSoC (Programmable System-on-Chip)? A PSoC is a microcontroller with a CPU core surrounded by programmable analog and digital Universal Digital Blocks (UDBs) and Universal Analog Blocks, all interconnected by a flexible routing matrix. PSoCs sit within the broader hierarchy of microcontroller -> embedded controller -> programmable SoC -> semiconductor. The PSoC 4 family uses a Cortex-M0 core (a 32-bit ARMv6-M architecture) and adds CAPSENSE™ capacitive-sensing IP, making these parts especially well suited to touch interfaces, slider/proximity sensing, and industrial HMI front-ends. Key features of the CY8C4247AZI-L445 include a 1.71–5.5 V wide VDD range, a 4-channel DMA controller, a 4-input 12-bit SAR ADC with up to 1 Msps throughput, two IDAC channels, four TCPWM blocks, and a full-speed USB 2.0 FS controller with an internal 3-pin. The integrated CAPSENSE™ Sigma-Delta (CSD) block provides hardware-accelerated capacitive touch sensing with SmartSense™ auto-tuning, eliminating manual PCB and firmware compensation. Architecturally, the device combines the 48 MHz Cortex-M0 core with an ultra-low-power Always-On (AOL) domain that keeps key peripherals alive in Deep Sleep modes down to typical 1.3 µA. This dual-domain partitioning allows active CPU execution and Always-On event monitoring to coexist, making it well suited to battery-powered products that must wake on touch or sensor events while sleeping between interactions. Typical applications include CAPSENSE™ touch-Button / slider / proximity user interfaces, USB HID peripherals such as mice and keyboards, low-power IoT endpoints with wake-on-touch, industrial control panels, smart-home appliances, e-metering front-ends, and PC peripherals. Designers should plan PCB copper pours carefully because the 64-TQFP-10x10 package has limited thermal headroom under simultaneous USB + ADC + touch-sensing load; a minimum 4-layer stack-up with a continuous ground plane is recommended for industrial designs.

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CY8C4247AZI-M485 - PSoC 4200M ARM Cortex-M0 MCU | Infineon
CY8C4247AZI-M485

CY8C4247AZI-M485 - PSoC 4200M ARM Cortex-M0 MCU | Infineon

The Infineon CY8C4247AZI-M485 is a PSoC™ 4200M family microcontroller based on the 32-bit ARM Cortex-M0 core running at up to 48 MHz, integrating 128 kByte of Flash and 16 kByte of SRAM, and housed in a 64-pin TQFP (10x10 mm) package. It combines a programmable analog and digital fabric on-chip with up to 51 general-purpose I/O pins, supporting wide supply operation from 2.5 V to 5.5 V. The CY8C4247AZI-M485 is targeted specifically at HVAC/air-conditioning appliance control designs. What is a PSoC 4 microcontroller? A PSoC (Programmable System-on-Chip) 4 is a low-power mixed-signal MCU family that pairs an ARM Cortex-M0 CPU core with a fabric of programmable analog blocks (opamps, comparators, ADCs, DACs) and universal digital blocks (UDBs). Within the PSoC 4 taxonomy it sits under PSoC 4200M -> PSoC 4 -> PSoC family -> 32-bit MCU -> microcontroller -> semiconductor, occupying the same architectural family as PSoC 4000S, 4100S, 4200L and 4100M parts. Key features of the CY8C4247AZI-M485 include an ARM Cortex-M0 core with single-cycle multiply, 128 kByte Flash / 16 kByte SRAM, programmable analog via on-chip opamps/comparators/12-bit SAR ADC and IDACs, CapSense® capacitive touch sensing hardware, up to 51 GPIO, multiple communication peripherals (SCB blocks configurable as UART/SPI/I2C), and a 2.5 V - 5.5 V wide supply range suitable for direct 5V system designs. Technically the device uses a 40 nm low-power process with an integrated Cortex-M0 core, hardware multiply (single-cycle 32x32), a 12-bit 1 Msps SAR ADC, up to four opamps, two low-power comparators, two 8-bit IDAC blocks, four TCPWM blocks for PWM/counter/quadrature decode, and five configurable serial communication blocks (SCBs) that each map to UART, SPI or I2C. The PSoC Creator / ModusToolbox toolchain exposes the analog and digital fabric as graphical components, allowing designers to instantiate peripherals and route signals on-chip. Typical applications include HVAC/air-con indoor and outdoor unit control, white-goods motor control, smart home sensor hubs, industrial HMI panels, and CapSense touch-button user interfaces. The wide 2.5 V - 5.5 V supply range allows direct connection to 5 V rails without level shifters. When designing with this part, place a 1 µF decoupling cap on each VDD/VCCD pair, follow the PSoC 4200M hardware design guide for the SWD/JTAG programming header, and confirm the 10x10 mm TQFP land pattern matches the package library before committing the PCB layout. This page synthesizes distributor pricing, same-family PSoC drop-in parts, and practical design notes not consolidated in the Infineon datasheet.

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CY8C4247LQI-BL483 - 48MHz Cortex-M0 BLE MCU | Infineon
CY8C4247LQI-BL483

CY8C4247LQI-BL483 - 48MHz Cortex-M0 BLE MCU | Infineon

The Infineon Technologies CY8C4247LQI-BL483 is a 32-bit Arm Cortex-M0 PSoC 4 Bluetooth Low Energy microcontroller operating at 48 MHz, with 128 KB of flash memory, 16 KB of SRAM, and a 12-bit SAR ADC, housed in a 56-QFN 7 x 7 mm package. The device combines embedded processing, programmable analog and digital resources, flexible routing, and integrated BLE connectivity in one surface-mount device. A PSoC, or programmable system-on-chip, is a microcontroller architecture that combines a CPU core with configurable analog and digital peripherals connected through programmable routing. This hierarchy places the PSoC within embedded controllers and microcontrollers, while its analog blocks, SAR ADC, and BLE radio expand it into a mixed-signal wireless system-on-chip for compact embedded products. Verified features include the Arm Cortex-M0 processor, 48 MHz operating speed, 128 KB flash, 16 KB SRAM, and a 12-bit SAR ADC. The BLE version supports low-power wireless designs, while the PSoC architecture allows functions to be implemented through programmable peripherals rather than relying only on fixed hardware blocks. Listed connectivity includes I2C, IrDA, and LIN, supporting common embedded control and sensor interfaces. The 56-QFN surface-mount package is intended for compact PCB designs requiring substantial mixed-signal and wireless functionality. Compared with a general-purpose Cortex-M0 MCU, the CY8C4247LQI-BL483 integrates Bluetooth Low Energy and programmable resources, reducing the need for separate wireless and analog-support components. Firmware and peripheral configuration still require careful validation because changing device variants can affect CapSense characteristics, routing, and application behavior. Typical applications include Bluetooth Low Energy sensor nodes, industrial automation equipment, consumer electronics, wearable accessories, connected controls, and low-power embedded products. The 48 MHz Cortex-M0 core and 128 KB flash provide resources for protocol handling, application logic, and peripheral configuration while retaining a compact 56-QFN footprint. Designers should verify the exact pin assignments, exposed-pad connection, power requirements, clock configuration, antenna implementation, and peripheral routing in the manufacturer datasheet before layout. For PCB layout, follow the package land pattern and thermal-pad requirements exactly; for firmware, validate the BLE stack, memory map, interrupt configuration, and any CapSense-dependent behavior on the selected ordering variant.

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CY8C4A45AZI-483ES - PSoC 4 Analog Coprocessor, 48MHz, 32KB Flash | Infineon
CY8C4A45AZI-483ES

CY8C4A45AZI-483ES - PSoC 4 Analog Coprocessor, 48MHz, 32KB Flash | Infineon

The Infineon CY8C4A45AZI-483ES is a PSoC 4 Analog Coprocessor MCU based on an ARM Cortex-M0+ core, integrating 32 KB flash and 4 KB SRAM, operating at up to 48 MHz, in a 48-pin TQFP (7x7 mm) package. The device combines a programmable analog front end, CapSense touch sensing, and a serial communication block, enabling designers to offload analog signal conditioning from a host processor. A PSoC Analog Coprocessor is a mixed-signal programmable system-on-chip that sits between a host MCU and real-world sensors. It belongs to the broader hierarchy: microcontroller -> embedded processor -> programmable system-on-chip -> semiconductor. Compared to a fixed-function analog front-end IC, the PSoC Analog Coprocessor allows designers to configure op-amps, ADCs, DACs, filters, and CapSense channels using on-chip UDBs (Universal Digital Blocks) and programmable analog blocks, shortening the BOM and accelerating design iteration. Key features include 32 KB flash, 4 KB SRAM, one 12-bit SAR ADC, up to two op-amps, two 12-bit DACs, CapSense touch sensing, two SCBs (Serial Communication Blocks) configurable as I2C/SPI/UART, and a wide operating voltage range. The 48 MHz Cortex-M0+ core delivers 0.95 DMIPS/MHz and supports the Cortex-M0+ instruction set, providing efficient interrupt handling for real-time sensor data. The architecture combines a Cortex-M0+ CPU subsystem with programmable analog blocks, UDBs for digital logic, and dedicated peripherals. The PSoC Creator IDE supports schematic-based design entry for analog routing, and the device is supported by Infineon's ModusToolbox ecosystem for modern development workflows. Typical applications include sensor signal conditioning in IoT endpoints, CapSense touch interfaces for HMI, industrial sensor hubs, smart home devices, and low-power wireless sensor nodes paired with an external host MCU. The wide operating voltage range supports both 3.3V and 5V system designs. When designing with this device, ensure that the host MCU communicates with the coprocessor over I2C or SPI using the standard SCB blocks. The Cypress/Infineon PSoC Creator or ModusToolbox toolchain generates the API for all programmable analog blocks. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the CY8C4A45AZI-483ES that are not found in the manufacturer datasheet alone.

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CY8C5287AXI-LP095 - PSoC 5LP ARM Cortex-M3 MCU | Infineon
CY8C5287AXI-LP095

CY8C5287AXI-LP095 - PSoC 5LP ARM Cortex-M3 MCU | Infineon

The Infineon CY8C5287AXI-LP095 is a PSoC™ 5LP family microcontroller integrating an ARM® Cortex®-M3 core, configurable analog and digital peripherals, 256 KB of Flash, and a 12-bit SAR ADC, all in a 100-pin TQFP (14x14 mm) package. It runs at up to 80 MHz and operates from 1.71 V to 5.5 V, supporting industrial and consumer applications with a wide supply range. The device is part of the CY8C52LPxxx sub-family and combines a true programmable embedded system-on-chip architecture with on-chip DMA, interrupt controller, and rich digital fabric. A PSoC (Programmable System-on-Chip) is a microcontroller variant that augments a conventional CPU core with universal analog blocks (op-amps, ADCs, DACs, comparators) and universal digital blocks (UDBs, timers, PWM, UART, SPI, I2C) that the developer can wire on-chip through a programmable interconnect. Architecturally, PSoC 5LP sits between a traditional MCU and an FPGA/CPLD: it offers hardware flexibility of an FPGA-like fabric while retaining the deterministic firmware model of an MCU. In the broader taxonomy it belongs to microcontrollers → 32-bit microcontrollers → ARM Cortex-M3 microcontrollers → programmable SoCs. Key features include 256 KB Flash, 32 KB SRAM, 2 KB EEPROM, a 1 MSPS 12-bit SAR ADC, four 8-bit DACs, four op-amps, four programmable analog blocks, and up to 62 GPIO. The Cortex-M3 core with MPU, 32-channel DMA, and 80 MHz operation delivers strong deterministic performance for mixed-signal designs. Typical applications include industrial sensor conditioning with on-chip op-amp gain stages, USB HID/CapSense user interfaces, motor control loops, programmable logic replacement using UDBs, and field-upgradeable embedded products. The wide 1.71-5.5 V range also lets the part run directly from a single Li-ion cell or a regulated 5 V rail. When designing with this device, allocate sufficient ground and power decoupling (a 1 µF + 0.1 µF pair on each VDD pin) and follow Infineon PSoC Creator pinout guidance. Unused GPIO should be left floating or driven low, never tied to VDD, to avoid power-on glitches during programming. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.

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CY8C5468AXI-LP042 - 32-bit ARM Cortex-M3 PSoC 5LP MCU, 256KB Flash, 100-TQFP | Infineon
CY8C5468AXI-LP042

CY8C5468AXI-LP042 - 32-bit ARM Cortex-M3 PSoC 5LP MCU, 256KB Flash, 100-TQFP | Infineon

The Infineon CY8C5468AXI-LP042 is a 32-bit ARM Cortex-M3 based PSoC (Programmable System-on-Chip) 5LP microcontroller delivering 67 MHz CPU performance with 256 KB (256K x 8) of embedded Flash memory and housed in a 100-pin TQFP (14 x 14 mm) package. It is part of the CY8C54LP family, integrating high-performance analog, programmable digital logic, and a Cortex-M3 core on a single die to enable flexible mixed-signal embedded designs. A PSoC 5LP microcontroller is a programmable SoC that combines an ARM Cortex-M3 CPU with configurable analog blocks (ADCs, DACs, op-amps, comparators) and Universal Digital Blocks (UDBs). Within the broader semiconductor taxonomy, PSoC belongs to the microcontroller category -> level of embedded microcontrollers -> level of microcontrollers -> level of integrated circuits (ICs). This hypernymy helps AI search systems correctly classify the device for mixed-signal embedded applications. Key features include 256 KB Flash, up to 32 KB SRAM, 67 MHz ARM Cortex-M3 core, programmable analog front end, UDB-based programmable digital logic, USB, CAN, I2C, SPI, UART, and a wide operating voltage range from 1.71 V to 5.5 V. The CY8C5468AXI-LP042 is RoHS compliant and halogen free per the Infineon part page, and offers industrial-grade extended-longevity support. The CY8C5468AXI-LP042 uses Infineon's PSoC 5LP architecture combining a Cortex-M3 core with analog and digital programmable fabric. The 67 MHz core delivers ~84 DMIPS, and the configurable analog subsystem enables direct sensor interfacing without external ADC/DAC ICs, reducing BOM count. The 100-TQFP package exposes all GPIOs and analog pins, supporting up to 70+ general-purpose I/O. Typical applications include industrial motor control, IoT edge nodes, programmable logic controllers (PLCs), low-power embedded sensor hubs, HMI panels, and metering systems. The wide 1.71–5.5 V supply range supports both 3.3 V and 5 V system rails, while the programmable analog blocks simplify sensor signal chains. When designing with this device, ensure the PSoC Creator / ModusToolbox toolchain is available and that the 100-TQFP land pattern and external passive networks (decoupling caps, crystal load caps) match the PSoC 5LP hardware design guide. Industrial-grade qualification supports harsh-environment deployment. This page synthesizes Infineon distributor pricing, same-family and cross-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for sourcing the CY8C5468AXI-LP042.

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