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CY8C3846AXE-175 - 48MHz 8-bit PSoC 3 MCU | Infineon
CY8C3846AXE-175

CY8C3846AXE-175 - 48MHz 8-bit PSoC 3 MCU | Infineon

Infineon Technologies CY8C3846AXE-175 is an 8-bit PSoC 3 CY8C38xx programmable system-on-chip microcontroller operating at 48 MHz, with 64 KB of embedded flash memory, in a 100-pin TQFP package measuring 14 x 14 mm. The device accepts a 0.5 V to 5.5 V operating-voltage range and combines an 8051-compatible MCU with programmable mixed-signal and digital resources. A microcontroller is a semiconductor integrated circuit containing a processor core, nonvolatile program memory, data memory, and peripherals on one die. In the broader IC hierarchy, the CY8C3846AXE-175 belongs to the embedded-microcontroller category and provides a compact platform for combining control logic with analog functions. Its 8051 architecture and PSoC 3 family position it between simple fixed-function controllers and higher-performance 32-bit microcontrollers. The principal verified features include a 48 MHz operating frequency, 64 KB of flash organized as 64K x 8 bits, 8-bit processing, and a 100-TQFP gull-wing package. Distributor records also identify 2.5 V, 3.3 V, and 5 V operating options for this device family. Its 100 terminals provide a substantial number of external connections compared with smaller 8-, 16-, or 32-pin microcontroller packages, supporting integration into control and mixed-signal systems that require numerous I/O resources. The CY8C38xx architecture combines an 8051-compatible core with programmable analog blocks, digital blocks, and programmable system resources. This enables designers to consolidate functions that might otherwise require separate analog and digital ICs. The 64 KB flash capacity provides sufficient on-chip storage for embedded firmware, while the 48 MHz clock rate supports responsive control and measurement routines. However, it remains an 8-bit MCU rather than a 32-bit processor, so workloads requiring large data movement, complex operating systems, or high computational bandwidth may benefit from a more capable platform. Typical uses include industrial control panels, building automation modules, sensor interfaces, motor and power-control systems, consumer appliances, and compact embedded instruments. The high pin count can reduce external glue when a design needs numerous GPIO, communication, control, or analog connections. Firmware and board validation remain essential because peripheral availability, routing, and operating conditions depend on the selected PSoC configuration. Designers should use the manufacturer datasheet for the definitive pin map, electrical limits, programming requirements, and exposed-pad connection details. Layout planning should preserve the required decoupling structure, provide clean grounding for sensitive analog measurements, and route high-speed or switching signals away from precision analog inputs. Firmware should also include startup and brownout behavior appropriate to the selected supply range. This product record consolidates verified distributor specifications, current commercial information, and practical engineering guidance. It also distinguishes confirmed facts from unavailable details rather than inferring pin assignments, electrical limits, lifecycle guarantees, or cross-references that are not present in the supplied source data.

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CY8C3865AXA-018 - 8051 PSoC 67MHz 32KB TQFP-100 | Infineon Technologies
CY8C3865AXA-018

CY8C3865AXA-018 - 8051 PSoC 67MHz 32KB TQFP-100 | Infineon Technologies

The Infineon Technologies CY8C3865AXA-018 is an 8-bit PSoC 3 CY8C38xx programmable system-on-chip microcontroller with a 67 MHz operating frequency, 32 KB flash memory, and a 100-pin TQFP package. The device belongs to the PSoC family, which combines configurable analog and digital peripherals with embedded flash memory and a microcontroller in a single integrated circuit. Its operating supply range is listed as 0.5 V to 5.5 V. The CY8C3865AXA-018 is identified as an 8051-compatible 8-bit MCU architecture. Its programmable system-on-chip structure allows selected analog and digital functions to be configured in the device rather than relying on a fixed combination of peripheral functions. This makes the device suitable for embedded designs that need programmable control, signal conditioning, sensing, and communication functions in one package. The 100-pin TQFP package provides a large pin count for external connectivity and mixed-signal implementations. Key cataloged features include 32 KB of flash, a maximum stated clock frequency of 67 MHz, an 8051 instruction-set architecture, and a 0.5 V to 5.5 V supply range. The part is listed with an LFQFP package code by an aggregator, while the distributor listing describes the package as 100-TQFP in a 14 x 14 mm outline. These package descriptions identify the same general 100-pin gull-wing footprint. The PSoC architecture can be used for industrial control, sensor interfaces, consumer products, communications equipment, and embedded control systems. Its combination of configurable peripherals and flash-based program storage allows a compact design to integrate control logic with application-specific analog functions. Device selection should also account for the required peripheral configuration, memory capacity, clocking requirements, voltage range, and the availability of the exact package variant. When designing a board around the CY8C3865AXA-018, use the manufacturer datasheet pin description table to assign every power, ground, programming, clock, analog, and digital signal. The 100-pin package offers many peripheral connections, so accurate pin planning is essential to avoid conflicts between reusable functions. Do not infer a complete pinout from package dimensions or distributor descriptions. This page combines the manufacturer datasheet reference, distributor catalog information, and the available cross-reference candidates for the CY8C3865AXA-018. It also identifies which replacement candidates require additional verification. The exact lifecycle status, detailed electrical limits, programming model, and manufacturer-approved drop-in alternatives should be confirmed before production release.

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CY8C3865AXI-204 - 67MHz 8051 MCU, 32KB Flash | Infineon
CY8C3865AXI-204

CY8C3865AXI-204 - 67MHz 8051 MCU, 32KB Flash | Infineon

Infineon Technologies CY8C3865AXI-204 is an 8-bit PSoC 3 CY8C38xx microcontroller built around a single-core 8051 architecture. It operates up to 67 MHz, provides 32 KB of flash program memory, 8 KB of SRAM and 1 KB of data EEPROM, and is housed in a 100-lead TQFP package measuring 14 mm by 14 mm. The device also includes one Fast USB 2.0 interface, 16 Universal Digital Blocks, a Peripheral Hub Unit, dual data pointers, 27 interrupt sources and eight priority levels. An 8051 microcontroller is an embedded-processing component that combines a general-purpose CPU core, program memory, data memory, peripherals and interrupt handling on one integrated circuit. The CY8C38xx family belongs to the PSoC architecture, placing programmable digital blocks and a peripheral hub beside the 8051 core. This hierarchy—8-bit MCU, 8051 microcontroller, PSoC 3 microcontroller, embedded processor and semiconductor—makes the part suitable for designs requiring flexible digital peripherals and USB connectivity. The principal features combine a 67 MHz operating ceiling with 32 KB of flash, 8 KB of SRAM and 1 KB of EEPROM. Sixteen Universal Digital Blocks support configurable digital functions, while the Peripheral Hub Unit provides eight parallel access paths, or spokes, for peripheral traffic. The integrated Fast USB 2.0 interface is particularly useful for USB-connected control, data-acquisition and human-interface equipment. Four flash protection levels add configurable firmware-control options. The interrupt architecture supports 27 sources and eight priority levels, allowing time-sensitive USB, timer, serial, and programmable digital events to be handled deterministically. Dual data pointers improve access to separate data regions, and the 8051 instruction-set architecture supports a mature embedded-software ecosystem. The part's combination of CPU performance, programmable logic resources and USB reduces the need for separate programmable-logic devices in suitable designs. Typical applications include USB data-acquisition equipment, industrial control panels, programmable serial interfaces, USB-connected test systems, embedded user-interface controllers and compact automation modules. The 100-lead TQFP package exposes substantially more I/O than a small-outline MCU, allowing several peripheral functions to remain active simultaneously. It is also appropriate for industrial control designs where a mature 8051 core, EEPROM and USB coexist on one device. A principal design consideration is firmware and board validation. Before layout approval, engineers should use the manufacturer's pin-description table and application guidance to assign every power, ground, programming, clock and peripheral signal. USB layouts require careful routing of the data lines and placement of the required passive components. Firmware should also account for the separate program Flash, data EEPROM and SRAM regions. This page combines manufacturer-level device facts, package details, practical design guidance, sourcing answers and a structured comparison of related CY8C38xx devices. These engineering views support component selection, firmware planning, PCB design and supply-chain assessment without duplicating the role of the manufacturer datasheet.

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CY8C3865LTI-205 - 67MHz PSoC 3 MCU | Cypress Semiconductor
CY8C3865LTI-205

CY8C3865LTI-205 - 67MHz PSoC 3 MCU | Cypress Semiconductor

The Cypress Semiconductor CY8C3865LTI-205 is an 8-bit PSoC 3 microcontroller in the CY8C38xx family, operating at up to 67 MHz with 32 KB of embedded flash memory and 4 KB of SRAM in a 68-QFN surface-mount package. The device combines an 8051-compatible processor core with programmable digital and analog resources for embedded control, sensing, and communications designs. A programmable system-on-chip, or PSoC, combines a microcontroller core with configurable peripheral blocks on one integrated circuit. The PSoC 3 architecture belongs to the broader microcontroller and embedded-processing hierarchy. By placing programmable digital functions, analog conversion resources, and general-purpose I/O near the processor core, the architecture can reduce external discrete circuitry and allow peripheral behavior to be adapted through device configuration and firmware. The CY8C3865LTI-205 provides a 67 MHz operating speed, 32 KB of flash program memory, and 4 KB of SRAM. Its 8-bit processor architecture and 8051 compatibility make it suitable for control-oriented embedded systems requiring responsive peripheral handling. The 68-QFN package measures 8 mm by 8 mm and supports compact, high-density PCB layouts where the exposed thermal pad and fine-pitch routing requirements can be managed correctly. The CY8C38xx family supports configurable system resources rather than relying on a fixed peripheral map. This approach is useful when a design needs mixed-signal behavior, digital control logic, serial communications, timing functions, or application-specific signal conditioning. Final peripheral performance, voltage limits, temperature ratings, and electrical characteristics should be confirmed against the manufacturer datasheet for the exact ordering code and temperature grade. Typical applications include industrial sensing and control modules, connected equipment, building automation interfaces, compact consumer products, motor and actuator controllers, and IoT edge nodes. In these systems, the MCU can combine control logic with mixed-signal functions while reducing component count. The 32 KB flash capacity is suitable for moderate firmware workloads, while 4 KB of SRAM supports real-time control, protocol stacks, and data buffering. PCB implementation requires careful treatment of the 68-QFN footprint. Place the exposed pad according to the manufacturer land-pattern and thermal-via guidance, maintain the specified solder-mask and paste geometry, and route high-impedance or noise-sensitive signals away from fast-switching and power-conversion nodes. Validate the assembled board for shorts between the fine-pitch leads and exposed pad before programming. This page consolidates the confirmed device identity, memory configuration, package information, sourcing links, engineering-use guidance, and compatibility limits into one practical reference for evaluating the CY8C3865LTI-205 in new embedded designs.

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CY8C3866AXA-035 - 67MHz 8051 MCU, 64KB Flash | Infineon
CY8C3866AXA-035

CY8C3866AXA-035 - 67MHz 8051 MCU, 64KB Flash | Infineon

Infineon Technologies CY8C3866AXA-035 is an automotive-qualified 8-bit PSoC 3 microcontroller with a 67 MHz 8051 core, 64 KB of flash memory, 8 KB of SRAM, and a 100-pin TQFP package measuring 14 mm by 14 mm. It is designed for embedded control applications that require programmable analog and digital peripherals alongside a compact 8051-compatible architecture. A PSoC, or programmable system-on-chip, combines a microcontroller core with configurable analog and digital blocks. Within the product hierarchy, the CY8C3866AXA-035 belongs to the PSoC 3 CY8C38xx family, combines an 8051-compatible MCU with programmable resources, and ultimately serves as a mixed-signal embedded-control IC. This integration allows designers to implement sensing, control, and communications functions on one device rather than using separate analog and digital components. The principal operating characteristics include an 8-bit 8051 instruction set, operation up to 67 MHz, and 64 KB of embedded flash organized as 64K by 8 bits. The device includes 8 KB of SRAM and accepts a supply range spanning 0.5 V to 5.5 V according to the product listing. Its 100-TQFP package provides a high pin count suitable for designs requiring numerous external peripheral connections. The CY8C38xx architecture is particularly useful when an application must combine deterministic control with programmable signal conditioning. Programmable analog and digital blocks can replace fixed-function glue logic, while the 8051-compatible core handles firmware, state machines, and communications. Designers should still verify startup behavior, clock limits, and peripheral availability for the specific device variant before finalizing a board. Typical applications include automotive body and comfort controllers, industrial monitoring equipment, sensor-interface systems, motor and actuator controllers, and compact embedded products that need both digital processing and programmable analog functions. The 67 MHz operating rate supports responsive control tasks while the 64 KB flash capacity accommodates application firmware and configuration data. For PCB implementation, use the 100-pin TQFP footprint and follow the manufacturer pin-description table when assigning power, ground, clock, programming, and peripheral signals. Pay particular attention to decoupling, exposed routing requirements, and startup configuration. Firmware development should use the programming tools and PSoC Creator workflow supported by the CY8C38xx family. This product page combines the device identity, memory organization, package details, verified drop-in family variants, application guidance, and engineering design notes in a searchable format. It helps engineers compare configuration options while retaining the exact 100-pin footprint and 8051-based architecture needed for targeted redesigns.

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CY8C3866AXA-038 - 8-Bit 67MHz 64KB Flash MCU | Infineon Technologies
CY8C3866AXA-038

CY8C3866AXA-038 - 8-Bit 67MHz 64KB Flash MCU | Infineon Technologies

The Infineon Technologies CY8C3866AXA-038 is an 8-bit PSoC 3 CY8C38xx microcontroller featuring a 67 MHz processor, 64 KB flash memory, and a 100-pin TQFP/LQFP package. It belongs to the programmable embedded system-on-chip family, combining a microcontroller core with configurable digital and analog peripherals in one integrated device. The device is identified as an 8051-based microcontroller in distributor and manufacturer-related product listings, making it suitable for embedded control designs requiring programmable logic, mixed-signal peripherals, and flexible peripheral configuration. A PSoC 3, or programmable system-on-chip, is a microcontroller platform that combines a CPU core with configurable analog and digital blocks rather than relying only on fixed peripheral functions. This architecture allows engineers to route signals, configure timers, control analog functions, and implement application-specific peripheral behavior through programmable logic and software-defined resources. The CY8C38xx family is designed for embedded control, sensing, communications, and industrial interface applications where a combination of deterministic control and adaptable peripherals is useful. The CY8C3866AXA-038 provides 64 KB of flash memory and operates at up to 67 MHz according to its product listing. Its 100-terminal package supports a substantially larger pin count than smaller microcontroller packages, providing access to the device's digital and analog resources. The listed 14 x 14 mm package format is identified as 100-TQFP by one distributor and LQFP-100 by another listing, so the package drawing and land pattern should be confirmed against the mechanical drawing in the manufacturer documentation before PCB release. Typical applications for the CY8C3866AXA-038 include industrial control panels, sensor-conditioning systems, motor and actuator controllers, communications equipment, and consumer products with configurable mixed-signal interfaces. The 8051-based architecture and programmable peripheral resources make the device especially relevant to designs that benefit from flexible pin multiplexing and configurable analog or digital blocks rather than a fixed application-specific controller. The principal design consideration is package and pin verification. Because this MPN is offered in a 100-pin package, the PCB footprint, exposed pad or thermal requirements if applicable, and every peripheral signal assignment must be checked against the correct mechanical and pinout documentation. Firmware configuration should also be reviewed before production because programmable PSoC resources can change signal routing and timing behavior between applications.

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CY8C3866AXA-040 - 67MHz 8051 MCU with 64KB Flash | Infineon
CY8C3866AXA-040

CY8C3866AXA-040 - 67MHz 8051 MCU with 64KB Flash | Infineon

The Infineon CY8C3866AXA-040 is an 8-bit PSoC 3 CY8C38xx microcontroller with a 67 MHz 8051 core, 64 KB of flash memory, and 8 KB of SRAM in a 100-pin TQFP package. The device combines programmable analog, digital, and LCD functions with a microcontroller core, creating a compact platform for embedded control, sensing, communications, and user-interface applications. A programmable system-on-chip, or PSoC, integrates a CPU, memory, analog peripherals, digital peripherals, and configurable interconnect resources on one die. Within the broader semiconductor hierarchy, the CY8C3866AXA-040 is a microcontroller and system-on-chip that replaces separate combinations of processor, memory, interface logic, analog circuitry, and display-control components. Its 8051-compatible core provides a familiar embedded-control architecture with deterministic peripheral integration. The principal device characteristics include a maximum clock frequency of 67 MHz, 64 KB of flash program memory, and 8 KB of SRAM. The CY8C38 family also supports analog, digital, and LCD-oriented functions, allowing designers to reserve resources for mixed-signal control rather than relying only on fixed-purpose digital peripherals. This integration can reduce board area and the number of external components in compact industrial, consumer, and communications designs. The 100-TQFP package provides a substantial number of external connections for power, ground, programming, clock, communications, analog, digital, and display functions. Although the package supports a broad peripheral mix, final peripheral availability, routing, and pin multiplexing must be checked in the device configuration tables. Clocking, programming, reset, and power sequencing should also be validated against the device's electrical and pin requirements before schematic capture. Typical uses include industrial control panels, compact sensor nodes, touch-enabled interfaces, display controllers, building automation modules, and low-cost embedded instruments. The LCD capability is particularly useful for local human-machine interfaces, while the analog and digital resources support mixed-signal sensing and actuator control. The 67 MHz core also provides additional processing headroom for protocols and supervisory logic. A key design consideration is that firmware, peripheral configuration, and the selected package's pin assignments must be coordinated as one design. Use the manufacturer pin-description table, memory map, and configuration guidance when assigning PCB tracks. Confirm the exact ordering suffix and temperature-grade requirements against the system operating environment before releasing the production BOM. This page consolidates component specifications, drop-in-replacement findings, package considerations, comparison data, and practical application guidance into a design-focused reference for engineers evaluating the CY8C3866AXA-040.

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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-039 - 67MHz 8051 PSoC MCU with 64KB Flash
CY8C3866AXI-039

CY8C3866AXI-039 - 67MHz 8051 PSoC MCU with 64KB Flash

The Infineon Technologies CY8C3866AXI-039 is an 8-bit PSoC 3 CY8C38xx programmable system-on-chip microcontroller with a 8051 CPU operating up to 67 MHz, 64 KB of embedded flash memory, 62 GPIO for analog and LCD functions, and a 100-lead TQFP package measuring 14 mm by 14 mm. It combines programmable digital and analog resources with USB connectivity in a single integrated device. A PSoC, or programmable system-on-chip, is a microcontroller architecture that integrates a CPU, programmable digital blocks, analog peripherals, memory, and communication peripherals into one device. Its programmable analog and digital sections allow product functions to be configured through firmware, reducing reliance on discrete external components while consolidating control, interface, and signal-conditioning functions. The CY8C3866AXI-039 provides 64 KB of flash, 8 KB of SRAM, 1 KB of data EEPROM, and 8 KB of ECC flash according to the device information published by Keil and the manufacturer product listing. Its 24 Universal Digital Blocks support configurable digital functions, while the PSoC 3 architecture also includes programmable analog resources for mixed-signal designs. The device offers one Fast USB 2.0 interface, dual datapointers, and an interrupt system with 27 sources and eight priority levels. The operating supply range is 0.5 V to 5.5 V. This broad range supports systems that need low-voltage analog or digital rails while retaining compatibility with conventional 5 V logic. The 8051 CPU and its extensive peripheral integration make the device suitable for control-intensive products requiring USB, display support, programmable signal handling, or mixed analog-and-digital acquisition. Typical applications include USB-connected data acquisition, industrial control panels, medical monitoring equipment, programmable instruments, touch interfaces, LCD-based user interfaces, and embedded control subsystems. Designers can assign programmable digital and analog blocks to functions such as timers, counters, serial communication, signal conditioning, and interface control through the PSoC development environment. For a new PCB, verify every power, ground, programming, USB, and peripheral connection against the manufacturer pin description and package drawing before layout. Pay particular attention to decoupling, analog-ground strategy, USB signal routing, and exposed supply requirements; these details can materially affect signal integrity and reliability even when the nominal logic functions are correct. This product record combines the manufacturer's device description, distributor specifications, package information, and engineering-oriented replacement guidance. It highlights the principal architecture, memory, connectivity, and application characteristics while distinguishing a confirmed close-family option from alternatives that require additional compatibility verification.

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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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CY8C3866LTI-209 - 67MHz 8051 PSoC 3 MCU | Infineon
CY8C3866LTI-209

CY8C3866LTI-209 - 67MHz 8051 PSoC 3 MCU | Infineon

The Infineon Technologies CY8C3866LTI-209 is a PSoC 3 programmable system-on-chip microcontroller with an 8-bit 8051 CPU, 67 MHz maximum operating frequency, and 64 KB of embedded Flash memory. It is packaged in a 68-pin QFN measuring 8 mm by 8 mm and includes a 20-bit ADC and CAPSENSE capacitive-sensing capability. The device operates from 1.8 V, 2.5 V, 3.3 V, or 5 V, making it suitable for embedded systems that need programmable analog and digital resources in one integrated device. A PSoC, or programmable system-on-chip, combines a microcontroller core with configurable analog and digital peripherals on one semiconductor. In the broader hierarchy, the CY8C3866LTI-209 is an 8-bit microcontroller, embedded controller, and programmable system-on-chip rather than a general-purpose processor. Its 8051 instruction set and integrated peripherals reduce external component count in touch sensing, control, and mixed-signal embedded products. The key features of the CY8C3866LTI-209 include a 67 MHz 8051 CPU, 64 KB Flash, 8 KB SRAM, a 20-bit ADC, and CAPSENSE. The combination of programmable analog and digital blocks allows designers to adapt peripheral behavior to a product rather than relying only on fixed hardware. Its operating-voltage options of 1.8 V, 2.5 V, 3.3 V, and 5 V support both low-voltage portable systems and conventional industrial control environments. The part belongs to the CY8C38xx PSoC 3 family and combines CPU execution, flash program storage, SRAM, analog conversion, and capacitive sensing. Its 8-bit architecture is intended for compact control loops, user interfaces, sensor conditioning, and product differentiation through programmable peripherals. The 68-QFN package also supports dense PCB layouts, although its exposed thermal pad and fine-pitch routing require careful layout planning. Typical applications include capacitive-touch control panels, industrial HMI terminals, home appliances, sensor interface modules, programmable instrumentation, and low-power embedded controllers. CAPSENSE is useful when a reliable user interface must operate through a panel, while the 20-bit ADC supports analog measurement and signal-conditioning tasks. The 8051 core is most appropriate where deterministic low-to-moderate processing demand matters more than high-performance application processing. A primary design consideration is power and thermal planning. The exact operating current, flash endurance, ADC accuracy, GPIO configuration, and programming workflow should be checked against the manufacturer datasheet before final qualification. The exposed-pad package requires a properly designed thermal and ground plane, while firmware should be validated across voltage, temperature, and peripheral-loading conditions. This product page consolidates the exact ordering information, core specifications, application guidance, package constraints, and sourcing workflow for CY8C3866LTI-209. It also identifies where design engineers should consult the official datasheet for complete pin assignments, register definitions, electrical limits, and programming information.

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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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CY8C3866PVI-070 - 67MHz PSoC 3 MCU | Infineon
CY8C3866PVI-070

CY8C3866PVI-070 - 67MHz PSoC 3 MCU | Infineon

The Infineon CY8C3866PVI-070 is an 8-bit PSoC 3 programmable system-on-chip microcontroller with a 67 MHz 8051 core, 64 KB of flash memory, and 24 universal digital blocks in a 48-pin SSOP package. It operates from 0.5 V to 5.5 V and combines a microcontroller core with configurable digital peripherals, DMA support, analog resources, and programmable system-level functions. A PSoC, or programmable system-on-chip, is a mixed-signal microcontroller architecture that integrates conventional processing blocks with configurable analog and digital peripherals. The CY8C38xx family places the CPU, memory, interrupt system, communication peripherals, and programmable blocks within one device, allowing engineers to tailor a circuit around a specific control requirement rather than using a fixed collection of dedicated peripherals. Key features of the CY8C3866PVI-070 include an 8051-compatible core operating up to 67 MHz, 64 KB of flash, 8 KB of SRAM, 1 KB of data EEPROM, and 8 KB of ECC flash. Its 24 universal digital blocks can implement timers, counters, serial communications, and custom digital functions. The interrupt system supports 27 sources and eight priority levels, while an eight-port peripheral hub provides parallel access paths for efficient data movement. The device also includes programmable analog and digital functions that allow control, measurement, and communication features to be configured in firmware. A dedicated CAN 2.0b interface, dual data pointers, DMA controller, and digital filter processor extend the architecture beyond a basic 8051 controller. These resources support responsive signal acquisition and peripheral control without requiring every function to be implemented externally. Typical uses include industrial monitoring, automotive body and comfort subsystems, consumer controls, communications equipment, data acquisition, and embedded systems that combine event handling with configurable digital logic. Its broad 0.5 V to 5.5 V operating range also makes it suitable for mixed-voltage systems when the selected external components and board design support that range. Designers should account for the 48-pin SSOP footprint, provide the decoupling and programming connections required by the PSoC 3 family, and verify pin multiplexing before assigning external functions. The configurable architecture reduces external component count, but firmware configuration, pin routing, and resource allocation must be checked against the device limits and application timing. This page combines manufacturer specifications, package information, application guidance, sourcing details, and technical comparisons for engineers evaluating the CY8C3866PVI-070. It also distinguishes the verified properties of this exact ordering code from functions that require final review of the manufacturer datasheet and device configuration.

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CY8C4013SXI-410 - 16MHz Cortex-M0 PSoC 4 MCU | Infineon
CY8C4013SXI-410

CY8C4013SXI-410 - 16MHz Cortex-M0 PSoC 4 MCU | Infineon

The Infineon Technologies CY8C4013SXI-410 is a PSoC 4000 series 32-bit microcontroller built around an Arm Cortex-M0 core operating at up to 16 MHz, with 8 KB of flash memory, 2 KB of SRAM, and an 8-pin SOIC package. Its 1.71 V to 5.5 V operating range supports low-voltage battery-powered systems as well as conventional 3.3 V and 5 V industrial and consumer equipment. A programmable system-on-chip is a microcontroller that integrates a processor core with configurable analog and digital peripheral blocks. Within the device hierarchy, the CY8C4013SXI-410 belongs to the PSoC 4 family, combines an Arm Cortex-M0 microcontroller with programmable resources, and provides a compact platform for embedded control, sensor conditioning, and low-speed communication. The PSoC architecture can reduce the need for separate analog and digital companion components. Key device resources include 8 KB of flash for program storage, 2 KB of SRAM for working memory, and 16 MHz maximum processing speed. I2C connectivity supports communication with sensors, EEPROMs, and other low-speed peripherals, while timer and PWM resources support periodic control tasks, dimming, and simple motor or actuator control. The specified industrial temperature range is -40°C to 85°C. The Arm Cortex-M0 architecture provides a deterministic, low-complexity execution environment with an efficient instruction set and broad embedded-tool support. Its 32-bit processing capability and compact memory organization are suited to cost-sensitive control nodes that collect data, manage a peripheral bus, and execute application firmware without requiring a separate digital signal processor or higher-performance application processor. Typical uses include distributed industrial sensing, compact environmental monitors, battery-powered sensor nodes, LED control modules, small appliance controllers, and service-port equipment. An I2C interface is particularly useful in designs where a microcontroller must monitor an external sensor and transfer readings to a higher-level controller. The compact SOIC package also supports through-hole assembly where surface-mount density is not required. When laying out the board, follow the manufacturer pin-description table for analog supply, ground, and general-purpose signal assignments. Keep analog and digital ground connections consistent with the recommended reference layout, and use the documented decoupling structure so the 1.71 V to 5.5 V supply range remains stable under transient loading. This page consolidates the device specifications, package details, sourcing information, replacement constraints, and practical design guidance for engineers evaluating the CY8C4013SXI-410 in compact embedded control designs.

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CY8C4013SXI-411 - 16MHz PSoC 4 MCU, 8KB Flash | Infineon
CY8C4013SXI-411

CY8C4013SXI-411 - 16MHz PSoC 4 MCU, 8KB Flash | Infineon

Infineon Technologies CY8C4013SXI-411 is a PSoC 4 programmable system-on-chip microcontroller with a 32-bit Arm Cortex-M0 processor, 16 MHz operating frequency, 8 kByte of flash memory, and 2 kByte of SRAM. The device operates from 1.71 V to 5.5 V and is housed in a 16-pin SOIC package. Its 13 general-purpose I/Os support compact embedded-control designs that require both digital control and programmable analog functions. A PSoC is a mixed-signal microcontroller architecture that combines a processor, programmable analog and digital blocks, and configurable routing on one integrated device. The CY8C4013SXI-411 belongs to the PSoC 4000 family, the smallest member of the PSoC 4 platform. This hierarchy places it between application-specific embedded controllers and conventional microcontrollers, while its analog peripherals allow designers to adapt signal paths without relying on a large collection of discrete components. Key features include an Arm Cortex-M0 core operating at up to 16 MHz, 8 kByte of program flash, 2 kByte of SRAM, 13 GPIOs, and a broad 1.71 V to 5.5 V supply range. The low-voltage operating envelope makes the device suitable for energy-conscious control systems, while the GPIO count provides practical connectivity for sensors, switches, indicators, communications interfaces, and discrete actuators. The 16-SOIC format also supports conventional surface-mount assembly and hand-soldered prototype workflows. The PSoC architecture combines standard microcontroller functions with programmable and reconfigurable blocks connected through flexible routing. This allows peripheral behavior to be adapted to a particular control task and can reduce the need for external signal-conditioning components. Firmware still has strict limits: 8 kByte of flash constrains application size, and 2 kByte of SRAM requires careful stack, buffer, and state-management planning. The 16 MHz Cortex-M0 core is suitable for control loops that do not require high-bandwidth processing. Typical uses include HVAC controllers, building equipment, environmental monitoring, compact sensor nodes, industrial control modules, and low-power appliance electronics. A CY8C4013SXI-411 can coordinate digital inputs and outputs while using PSoC analog resources for signal acquisition or conditioning. For connected products, the controller can also manage a serial communications interface, although the application-specific protocol and supporting components must be selected during design. A critical design consideration is power-supply integrity. The 1.71 V to 5.5 V operating range requires a regulated rail that remains within limits at the MCU pins across temperature, load transients, and startup conditions. Place the required bypass capacitors close to the power and ground pins, route high-current return paths away from sensitive analog inputs, and confirm the selected PSoC configuration, clocking, and pin assignment against the manufacturer pin-description table. This page combines the exact ordering characteristics of the CY8C4013SXI-411 with engineering guidance for power, layout, firmware, and verification. It also distinguishes pin-compatible family options from changes that require a different package, voltage plan, or software configuration, helping engineers make a replacement decision without treating every similar MCU as a true drop-in substitute.

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CY8C4014PVI-412 - 16MHz PSoC 4 MCU | Infineon
CY8C4014PVI-412

CY8C4014PVI-412 - 16MHz PSoC 4 MCU | Infineon

Infineon CY8C4014PVI-412 is a PSoC 4000 programmable system-on-chip microcontroller with a 16 MHz Arm Cortex-M0 CPU, 16 kB of flash memory, 2 kB of SRAM, and a 1.71 V to 5.5 V operating range. The device is housed in a 28-pin SSOP package and combines a microcontroller core with programmable analog and digital resources for compact embedded control designs. A programmable system-on-chip, or PSoC, is an embedded-controller category that integrates a CPU, programmable analog blocks, programmable digital peripherals, and configurable routing into one device. This integration allows functions such as analog conversion, timers, serial communication, and signal conditioning to be implemented in firmware while reducing the number of discrete components required around the controller. The CY8C4014PVI-412 provides 16 kB of flash for program storage and 2 kB of SRAM for working memory. Its Cortex-M0 processor operates at up to 16 MHz, providing a practical balance between processing throughput, power consumption, and design complexity. The 1.71 V to 5.5 V supply range supports low-voltage embedded systems and equipment operating from common low-voltage rails. Its PSoC architecture uses programmable analog and digital blocks connected through configurable routing. According to the manufacturer datasheet, the device includes two current DACs for general-purpose or capacitive-sensing use. These resources make the controller suitable for designs that combine firmware-configurable signal acquisition with conventional control functions without relying on a large collection of fixed peripherals. Typical applications include capacitive-sensing user interfaces, compact industrial control modules, low-power sensor interfaces, consumer accessories, and small motor-control or monitoring products. The 28-pin SSOP package is useful where a conventional through-hole or surface-mount controller is needed without requiring a very dense land pattern. Designers should confirm the exact peripheral allocation, pin multiplexing, decoupling requirements, programming method, and unused-pin treatment in the manufacturer pin-description table. Software configuration must also account for the limited 2 kB SRAM, particularly when buffering data or combining multiple active peripherals. This page combines the device’s core specifications, pin-compatible family alternatives, application guidance, and design considerations to support faster component selection and board-level planning.

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CY8C4014PVI-422 - 16MHz Arm Cortex-M0 PSoC 4000 MCU, 16KB Flash | Infineon
CY8C4014PVI-422

CY8C4014PVI-422 - 16MHz Arm Cortex-M0 PSoC 4000 MCU, 16KB Flash | Infineon

The Infineon CY8C4014PVI-422 is a PSoC 4000 series programmable system-on-chip microcontroller built on an Arm Cortex-M0 core, providing 16 kByte of flash program memory, 2 kByte of SRAM and a 16 MHz operating frequency in a 28-pin SSOP package. The part accepts a 1.71 V to 5.5 V supply, so a single regulated rail or a 3.3 V/2 V cell-backed source can power it directly. A PSoC (Programmable System-on-Chip) is a mixed-signal microcontroller that integrates a CPU core with configurable analog and digital peripheral blocks plus a routing fabric that connects them to GPIO pins. In the hierarchy of embedded semiconductors, PSoC sits between a plain microcontroller and an application-specific mixed-signal SoC: it is still programmed in C with an Arm Cortex-M core, yet analog functions such as op-amps, comparators and ADCs can be placed and routed at run time instead of being fixed in silicon. Key features of the CY8C4014PVI-422 include 32-bit Arm Cortex-M0 processing, 16 kByte (16K x 8) flash, 2 kByte of SRAM, a 1.71 V to 5.5 V supply range and a 16 MHz maximum clock. As a member of the CY8C4000 family, it inherits the family characteristic of configurable analog and digital blocks with automatic routing to GPIO pins, which reduces external passive count and lets one footprint serve multiple sensing or interface functions. Architecturally, the device combines the Cortex-M0 instruction set with dedicated digital blocks such as timers, serial interfaces and a programmable filter block, alongside analog blocks that can be routed to any capable GPIO. The automatic routing fabric is what makes the family distinctive: peripheral placement is decided by firmware, so a board can be reconfigured for different sensor inputs or communication channels without a hardware spin. Typical applications include low-cost sensor nodes, capacitive-touch keypads, small industrial condition-monitoring modules, USB-connected low-speed data loggers and compact consumer accessories. The SSOP-28 footprint keeps board area low while the 1.71 V minimum supply supports coin-cell and energy-harvesting front ends. When designing around this part, plan the analog-capable pins carefully: their assignment to internal op-amps or comparators is firmware-driven, so fixing a pin map in the hardware schematic before the firmware block placement is decided is a common source of rework. Confirm the pin package and temperature options in the ordering information table for the PVI suffix. This page combines manufacturer and distributor information for the CY8C4014PVI-422 with a drop-in family comparison, application guidance and layout notes that are not consolidated in the manufacturer datasheet, helping engineers qualify the part quickly for embedded designs.

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CY8C4014SXI-411 - 16MHz Cortex-M0 PSoC 4 | Infineon
CY8C4014SXI-411

CY8C4014SXI-411 - 16MHz Cortex-M0 PSoC 4 | Infineon

Infineon Technologies CY8C4014SXI-411 is a PSoC 4 programmable system-on-chip microcontroller with an Arm Cortex-M0 core, 16 MHz operating frequency, 16 kByte flash memory, and 2 kByte SRAM, housed in a 16-pin SOIC package. The device provides 13 general-purpose I/O pins for compact embedded control designs. A microcontroller is a programmable integrated circuit that combines a processor core, memory, and peripheral interfaces on one semiconductor die. The PSoC platform belongs to the microcontroller hierarchy and adds programmable analog and digital resources alongside conventional embedded-control functions. This integration allows a design to use adaptable peripherals and flexible I/O instead of relying on a large collection of discrete components. The CY8C4014SXI-411 combines a 32-bit Arm Cortex-M0 processor with 16 kByte of flash and 2 kByte of SRAM. Its 16 MHz clock rate provides a straightforward platform for supervisory logic, control loops, human-interface tasks, and compact embedded products. The 13 GPIOs support connections to sensors, indicators, switches, communications devices, and other external circuitry in applications where board area is constrained. The 16-SOIC package supports conventional surface-mount assembly and provides a smaller board footprint than many larger leaded packages. Because the complete pin assignment and electrical limits are not shown on the product page, engineers should use the Infineon product documentation when assigning tracks, selecting pull-up or pull-down resistors, and checking exposure to unused pins. Typical implementation areas include industrial sensor-control modules, compact consumer interfaces, appliance control, low-cost instrumentation, and wearable accessories. The 16 kByte flash supports a modest embedded code footprint, while 2 kByte SRAM accommodates working variables and short data buffers. Confirm that the memory budget, interrupt requirements, and peripheral resources satisfy the complete firmware design before production release. The primary design trade-off is integration versus memory capacity. A single PSoC can consolidate several functions around one microcontroller, but the 16 kByte flash limit may constrain larger protocol stacks, graphical interfaces, or extensive application code. Use the manufacturer datasheet to verify clock, peripheral, electrical, and package constraints before committing a PCB layout. This product page combines manufacturer specifications, availability references, package information, engineering guidance, and qualified replacement analysis to support faster component selection. It is designed to help buyers distinguish exact configuration changes from true pin-compatible substitutions and to move directly into schematic, firmware, and layout review.

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CY8C4014SXI-420 - 16MHz 16KB Flash PSoC 4 | Infineon
CY8C4014SXI-420

CY8C4014SXI-420 - 16MHz 16KB Flash PSoC 4 | Infineon

The Infineon Technologies CY8C4014SXI-420 is a PSoC 4000 programmable system-on-chip microcontroller with an Arm Cortex-M0 core, 16 kByte of flash memory, 2 kByte of SRAM, and CAPSENSE capability in an 8-pin SOIC package. It operates at up to 16 MHz and combines a microcontroller core with programmable digital and analog resources for compact embedded-control and capacitive-sensing designs. A PSoC is a mixed-signal microcontroller that integrates programmable analog blocks, digital peripherals, and a CPU into one device. Within the broader semiconductor hierarchy, the CY8C4014SXI-420 is a programmable system-on-chip, an MCU, a microcontroller IC, and an embedded-control component. This integration can reduce external component count while allowing functions such as touch sensing, control logic, and low-speed communication to be consolidated on a compact board. Key device attributes include a 32-bit Arm Cortex-M0 processor operating at 16 MHz, 16 kByte of flash, 2 kByte of SRAM, CAPSENSE support, and an 8-SOIC package. The target ordering code is associated with the CY8C4000 family. Infineon identifies the device as a PSoC 4 MCU with CAPSENSE, while distributor listings describe the same 16 MHz, 16 kByte flash, and 2 kByte SRAM configuration. The CY8C4000 architecture combines general-purpose embedded processing with programmable peripherals suited to compact control systems. Its Arm Cortex-M0 core provides a 32-bit instruction set and an established software ecosystem, while CAPSENSE enables capacitive sensing applications using external sensor electrodes. The 8-pin SOIC package is useful where a small PCB footprint, conventional surface-mount assembly, and access to a limited number of general-purpose and special-function pins are required. Typical uses include capacitive touch controls, compact human-interface modules, DC brushless or SRM motor-control systems, appliance controls, sensor interfaces, and small industrial or consumer embedded products. For designs using more than two electrodes or requiring additional programmable analog functions, designers should confirm the available resources and pin multiplexing in the manufacturer datasheet before committing the PCB layout. PCB design should preserve the package pin assignments, place decoupling capacitance close to the supply pins, and route sensitive CAPSENSE electrodes away from noisy switching nodes and long parallel traces. Firmware development requires a compatible PSoC configuration environment, and the device should be programmed according to the programming and boot instructions in the manufacturer documentation. Verify all voltage, clock, and reset details against the exact ordering code before production release. This product record combines the manufacturer identification, distributor package and memory details, CAPSENSE positioning, and ordering variants in one engineering-focused reference. It also provides structured replacement analysis, application guidance, and design checks for teams evaluating the CY8C4014SXI-420 in space-constrained embedded products.

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CY8C4124AZI-443 - 24MHz PSoC 4 MCU | Infineon
CY8C4124AZI-443

CY8C4124AZI-443 - 24MHz PSoC 4 MCU | Infineon

Infineon Technologies CY8C4124AZI-443 is a PSoC 4 mixed-signal microcontroller with a 32-bit Arm Cortex-M0 processor, 24 MHz operating frequency, 16 KB flash memory, 36 I/O pins, and a 48-pin TQFP package measuring 7 x 7 mm. It also integrates a 12-bit SAR ADC capable of operation up to 806 ksps. A PSoC, or Programmable System-on-Chip, combines a microcontroller CPU with configurable analog and digital peripherals on one integrated device. The CY8C4100 series belongs to the broader embedded-controller hierarchy: microcontroller → mixed-signal MCU → programmable system-on-chip. Its integrated analog front end and configurable peripherals can reduce external component count in sensing, control, and embedded interface applications. The CY8C4124AZI-443 operates at 24 MHz and provides 16 KB of flash organized as 16K x 8 bits. Its 36 I/O pins support connections to external sensors, controls, communications devices, and digital peripherals. The integrated 12-bit SAR ADC supports conversion rates up to 806 ksps, making the device suitable for applications that repeatedly acquire analog measurements while also perform control and data-processing tasks. The device is based on the Arm Cortex-M0 architecture, a compact 32-bit processor designed for cost-sensitive embedded control. PSoC 4 devices combine that processor core with programmable mixed-signal resources rather than relying only on fixed peripheral functions. This architecture allows designers to implement sensing, signal conditioning, control logic, and communications interfaces within a compact integrated circuit. Typical uses include industrial sensor nodes, temperature-measurement systems, analog control loops, compact instrumentation, motor-control interfaces, and connected embedded products. The 806 ksps ADC capability is especially relevant to applications that need faster analog sampling than a basic low-rate sensor interface. The 36 available I/O pins also allow the MCU to supervise several discrete inputs and outputs while retaining dedicated resources for external communication. PCB planning should account for the 48-pin TQFP footprint, exposed programming interface requirements, power and ground distribution, and analog-signal routing around the SAR ADC. Keep sensitive analog inputs away from fast-switching digital paths, provide local supply bypassing at the device pins, and follow the manufacturer pin-description and layout guidance before assigning board functions. This page consolidates the core PSoC 4 specifications, practical application guidance, sourcing information, and the constraints involved in identifying a pin-compatible replacement. Review the Infineon product documentation and datasheet before finalizing clock, memory, peripheral, package, and PCB decisions.

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CY8C4124LQI-443 - 24MHz Cortex-M0 PSoC 4 MCU, 16KB Flash | Infineon
CY8C4124LQI-443

CY8C4124LQI-443 - 24MHz Cortex-M0 PSoC 4 MCU, 16KB Flash | Infineon

The Infineon CY8C4124LQI-443 is a PSoC 4 programmable system-on-chip with an Arm Cortex-M0 CPU operating up to 24 MHz, 16 kByte of flash, 4 kByte of SRAM and 4 kByte of EEPROM, housed in a 40-pin QFN (6 x 6 mm) package. A microcontroller (MCU) is a single integrated circuit that contains a CPU core, memory and programmable peripherals on one die. The PSoC 4 family goes further by adding programmable digital and analog blocks: fixed-function peripherals are replaced by routable fabric that the designer can configure in software. In the wider hierarchy, CY8C4124LQI-443 sits as an MCU -> PSoC -> programmable SoC -> embedded processing semiconductor, giving it the flexibility of an FPGA with the cost and simplicity of a microcontroller. Key features include a 12-bit successive-approximation-register (SAR) ADC operating at 806 ksps with differential and single-ended modes plus a channel sequencer with signal averaging, two current DACs (IDACs) for capacitive sensing on any pin, two low-power comparators that keep operating in Deep Sleep, and four 16-bit configurable timer, counter and PWM blocks. Digital peripherals route to any GPIO through the Versatile I/O system. Technically, the device runs from a 1.71 V to 5.5 V supply and consumes only 20 nA in Stop Mode with GPIO pin wake-up. The Arm Cortex-M0 core delivers 32-bit arithmetic with a compact instruction set, while the 4 kByte EEPROM provides non-volatile parameter storage that the on-chip flash cannot deliver in a small footprint. The 40-QFN 6 x 6 mm outline keeps the board area low for cost-sensitive embedded products. Typical uses include capacitive touch and proximity sensing panels, capacitive sensing keypads, industrial sensor nodes, compact HMI control boards, and low-power IoT devices that wake briefly to sample a signal and return to Stop Mode. When designing around this part, mind the 24 MHz ceiling: route the 24 MHz clock away from sensitive analog inputs, keep the SAR ADC reference and its decoupling capacitor close to the supply pins, and follow the pin-description table in the manufacturer datasheet when assigning analog-capable pins. This page brings together the manufacturer part parameters, the exact memory and analog block configuration, a drop-in replacement view of the same-package PSoC 4100 options, and practical PCB and low-power design notes that are spread across many separate documents in the original data set.

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CY8C4124PVI-432 - 24MHz Cortex-M0 16KB PSoC 4 MCU | Infineon
CY8C4124PVI-432

CY8C4124PVI-432 - 24MHz Cortex-M0 16KB PSoC 4 MCU | Infineon

Infineon Technologies CY8C4124PVI-432 is a PSoC 4100 programmable system-on-chip microcontroller featuring a 32-bit Arm Cortex-M0 CPU, a 24 MHz operating frequency, 16 KB of flash program memory, and a 12-bit SAR ADC in a 28-pin SSOP package. The device combines programmable analog and digital resources with general-purpose microcontroller control in a compact embedded package. A PSoC, or programmable system-on-chip, is an MCU architecture that integrates a CPU with configurable analog and digital peripherals. In the product hierarchy, the CY8C4124PVI-432 belongs to the PSoC 4 family and specifically the PSoC 4100 series. This integration lets an embedded design place sensing, signal conditioning, timing, control, and communication functions into one programmable component rather than using a separate microcontroller and several discrete interface circuits. The principal features of the CY8C4124PVI-432 include the Arm Cortex-M0 processor operating to 24 MHz, 16 KB of flash memory organized as 16K x 8, a 12-bit successive-approximation-register ADC, and four configurable 16-bit timer, counter, and PWM blocks. Its versatile I/O system allows GPIO resources to be routed among digital and analog peripherals, supporting designs that need flexible pin assignment or board-level resource optimization. The CY8C4124PVI-432 belongs to the PSoC 4100 performance range, which combines a modest embedded footprint with mixed-signal processing. The 12-bit SAR ADC supports analog measurement, while the configurable timers support periodic control, event counting, and PWM generation. The Arm Cortex-M0 execution environment provides a 32-bit instruction set and broad support for embedded firmware, but it should not be confused with a higher Cortex-M class that includes an instruction cache or enhanced pipeline architecture. Typical applications include industrial sensing modules, compact control panels, automotive body and comfort subsystems, consumer appliances, and low-cost human-machine-interface controllers. The device is especially suitable when an application needs both digital control and local analog measurement without relying on a larger mixed-signal MCU or a discrete analog front end. For PCB design, use the manufacturer pin-description table when assigning signals and confirm the SSOP-28 land pattern, power pins, ground connections, programming interface, and decoupling requirements before layout release. Keep analog and digital return paths controlled, place input and output capacitors close to their associated pins, and verify the external clock and reset configuration against the device programming requirements. This page combines the device identity, package information, core and memory characteristics, practical application guidance, and replacement considerations into an engineering-focused reference. It also distinguishes verified device facts from replacement candidates that require additional package and peripheral validation before they can be used in a new design.

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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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CY8C4124PVI-442 - 24MHz PSoC 4 MCU | Infineon
CY8C4124PVI-442

CY8C4124PVI-442 - 24MHz PSoC 4 MCU | Infineon

The Infineon CY8C4124PVI-442 is a PSoC 4 programmable system-on-chip microcontroller based on the Arm Cortex-M0 architecture. It operates up to 24 MHz, contains 16 kByte of flash and 4 kByte of SRAM, and provides a 12-bit SAR ADC capable of 806 ksps operation. The device offers 24 GPIOs and is supplied in a 28-pin SSOP package. Its combination of an Arm Cortex-M0 processor, configurable analog and digital peripherals, and programmable signal-routing architecture makes it suitable for compact embedded control systems that require both analog measurement and digital control. A PSoC, or programmable system-on-chip, is an MCU architecture that integrates a CPU with configurable analog and digital functional blocks. In the broader semiconductor hierarchy, it is a 32-bit microcontroller and embedded processor, with the Cortex-M0 core providing a compact, low-complexity platform for control-oriented products. Unlike a fixed-function analog IC or a simple logic device, the CY8C4124PVI-442 can route GPIO and internal peripheral signals through a programmable digital fabric while adding dedicated analog conversion resources. The 16 kByte flash provides program storage for embedded firmware, while 4 kByte of SRAM supports working memory, stack operations, and data buffers. The 24 GPIOs allow the device to interface with sensors, actuators, human-machine-interface components, and communication peripherals. The 12-bit SAR ADC provides 4,096 possible digital codes and is specified at up to 806 ksps, allowing it to sample rapidly varying analog inputs. This combination is useful in sensor interfaces, industrial controls, compact consumer products, and embedded human-machine-interface systems. The Arm Cortex-M0 core is a 32-bit embedded processor designed for efficient control workloads. Its 24 MHz operating rate, programmable peripherals, and GPIO-to-peripheral routing reduce the need for separate analog and digital components in a compact design. Because the analog conversion function and programmable logic are integrated, board partitioning can be simplified when the application does not require the resources of a larger Cortex-M3 or Cortex-M4 MCU. Typical applications include industrial sensor acquisition, programmable analog front ends, motor and actuator control, compact control panels, embedded user interfaces, and low-to-medium-cost consumer devices. The 28-pin SSOP package also supports designs where a conventional through-hole or leaded package is preferred over a fine-pitch QFN. Firmware and peripheral configuration should be validated for the exact clock, pin, and analog-routing requirements of the product. A key design consideration is that the ADC, GPIO, and internal peripherals must be assigned through the device configuration before firmware operation. Confirm the selected package pinout, analog routing, clock limits, decoupling requirements, and programming-device support in the manufacturer documentation before layout release. This page also organizes the verified device specifications, sourcing guidance, design considerations, and package information into a single engineering reference.

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