In embedded design, the traditional “MCU + multiple peripherals” model often increases circuit complexity and bill of materials (BOM) costs, while also limiting the miniaturization and flexibility of end products. As application requirements diversify, engineers are increasingly demanding solutions that simultaneously implement analog acquisition, digital logic, and communication interfaces within a single chip .
Product Overview
The CY8C27443-24PVXIT belongs to the CY8C27xxx sub-family of the Infineon (formerly Cypress) PSoC® 1 series. Based on the M8C 8-bit MCU core, it combines programmable analog and digital blocks, enabling signal conditioning, control logic, and communication interface configuration in a small 28-SSOP package. This architecture enables engineers to define hardware functions at the software level, eliminating the need for additional peripheral chips and enabling rapid prototyping and cost-effective mass production. It offers a balance of resource flexibility and cost-effectiveness in scenarios such as industrial control, medical instrumentation, and consumer electronics .
Key Technical Specifications
Parameter | Specification |
MCU Architecture | M8C 8-bit core, up to 24 MHz |
Program Memory | 16 KB Flash |
Data Memory | 256 Bytes SRAM |
GPIO Count | 24 programmable I/Os |
Analog Resources | 4 × 14-bit ADC, 4 × 9-bit DAC, comparator function |
Digital Peripherals | PWM, timers, I²C, SPI, UART/USART, WDT, POR |
Power Supply Voltage Range | 3.0 V ~ 5.25 V |
Operating Temperature Range | –40°C ~ +85°C (Industrial Grade) |
Package | 28-SSOP (PVXIT, Tape & Reel available) |
Mounting Type | Surface Mount |
Architecture Overview: A Flexible Hardware-Software Platform
The PSoC 1 platform to which the CY8C27443-24PVXIT belongs uses a unique hardware and software fusion architecture:
- MCU core: M8C, performs control logic and computing tasks;
- Programmable analog module: supports signal sampling, amplification, conversion and output, and can realize ADC/DAC/comparator/op amp functions;
- Programmable digital blocks: can be configured as PWM, timers, counters, or to build serial communication interfaces (UART/SPI/I²C).
This architecture enables engineers to define hardware functions in software through the PSoC Designer tool, enabling a single chip to perform multiple tasks and avoiding additional peripheral devices.
Key Advantages and Engineering Value
- High integration: MCU + ADC/DAC + communication interface are implemented in a single chip, simplifying hardware design.
- Flexible configuration: I/O and module functions can be defined and mapped through software to adapt to different project requirements.
- Space-saving: 28-SSOP package, suitable for end products with limited PCB size.
- Low power support: built-in power-down reset (POR), watchdog timer (WDT), sleep mode, suitable for battery-powered systems.
- Rapid Development: Supported by the PSoC Designer® tool, it supports modular configuration and online debugging, shortening the development cycle.
Typical Application Scenarios
Application Areas | Description |
Smart Home Control | Light dimming, motor drive, key scanning and infrared interface |
Medical and Instrumentation | Temperature/pressure signal acquisition and filtering, LCD/buzzer drive |
Industrial Control Terminals | UART/SPI communication, relay or small motor control |
Educational Platforms | MCU introductory experiments and mixed-signal system teaching |
Series Model Reference Comparison
Model | Flash/SRAM | Number of I/Os | Analog/digital module resources | Package | Application Positioning |
8 KB / 256 Bytes | 16 | Analog module + digital module simplified | 20-SSOP | Compact design for space-constrained applications | |
CY8C27443-24PVXIT | 16 KB / 256 Bytes | 24 | 4 × 14-bit ADC, 4 × 9-bit DAC + digital module | 28-SSOP | Balanced resource configuration, suitable for multi-interface control scenarios |
32 KB / 2 KB | 28 | More analog/digital modules | 48-TQFP | Function-intensive applications, suitable for more complex logic requirements |
Note: All three models share the PSoC 1 architecture, differing primarily in memory capacity, I/O count, packaging, and resource scale. Engineers can flexibly select a model based on space constraints, application complexity, and cost budget.
Development and Tool Support
- Software Tools: PSoC Designer®, supporting visual configuration and code generation;
- Hardware Debugging: compatible with MiniProg/ICE emulator, enabling online programming and debugging;
- Peripheral Expansion: Compatible with standard peripherals such as EEPROM, RTC, LCD, sensors, etc.
- Mass Production Support: 28-SSOP package, available in Tape & Reel format, suitable for SMT automated placement.
The CY8C27443-24PVXIT provides a flexible and compact control platform for embedded system developers through the integrated hardware and software PSoC architecture and a comprehensive development tool ecosystem. It strikes an optimal balance between resources and functionality for cost-sensitive industrial instrumentation and flexibility-demanding consumer electronics designs.
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