CY8C3245AXA-166

Overview

The CY8C3245AXA-166 is an 8-bit microcontroller from the Infineon PSoC 3 family, featuring an 8051 core with a maximum clock frequency of 50 MHz. It integrates 32 kB of Flash program memory and 8 kB of SRAM data memory. The device provides 28 I/O pins and supports a supply voltage range of 1.71 V to 5.5 V. Key peripherals include one 12-bit ADC, one 8-bit DAC, four timer/counters, and communication interfaces such as I2C, SPI, UART, and Full-Speed USB.

Feature Summary

• Integrates a high-performance 8051 CPU with programmable analog and digital blocks for system-on-chip flexibility.
• Includes dedicated capacitive sensing (CAPSENSE) hardware acceleration for touch interface applications.
• Features a full-speed USB interface with integrated transceiver for direct connectivity without external components.
• Supports low-power operation with multiple sleep modes and a wide operating voltage range.

Applications

• Consumer electronics requiring capacitive touch controls
• Industrial control systems with analog signal processing needs
• USB-enabled peripheral devices and human interface devices
• Battery-powered appliances utilizing low-voltage operation

Procurement Notes

Verify the specific suffix 'AXA' against official Infineon documentation to confirm package type and temperature grade. Ensure compatibility with PSoC Creator development tools. Check for end-of-life status or alternative recommendations in current product selection guides before finalizing procurement plans.

Selection Notes

Select this component when an 8-bit architecture with extensive analog integration is required. Compare pin counts and memory sizes against other CY8C32xx variants to ensure fit. Consider the TQFP-100 package availability if higher pin counts are needed, or verify if the 28-pin configuration meets board space constraints.

Part Context

This part belongs to the PSoC 3 family, which combines a fast 8051 processor with configurable analog and digital blocks. It is designed for applications needing mixed-signal capabilities in a single chip. The family emphasizes ease of design through visual configuration tools and extensive library support for common peripherals.

Replacement Considerations

Consult Infineon's official obsolescence notices for direct replacements. Cross-reference with CY8C32xxx series variants offering similar memory and I/O configurations. Verify that any substitute maintains compatible pinouts and software libraries to minimize redesign effort.