CY8C3245AXI-166

Overview

The CY8C3245AXI-166 is a PSoC 3 programmable system-on-chip featuring an 8051 CPU core operating up to 50 MHz. It integrates 32 KB of Flash program memory, 4 KB of SRAM, and 1 KB of EEPROM. The device includes one 12-bit Delta-Sigma ADC, one 8-bit DAC, two voltage comparators, and four TCPWM modules. Connectivity options include one I2C interface and Full-Speed USB 2.0. It provides 62 GPIO pins within a TQFP-100 package, supporting a supply voltage range of 1.71 V to 5.5 V and an operating temperature range of -40 °C to 85 °C.

Feature Summary

• Integrates a single-cycle 8051 CPU with DMA controller for high-performance processing
• Features configurable analog and digital subsystems including Delta-Sigma ADC and CapSense support
• Provides flexible I/O routing with multiple voltage domains and special function I/O capabilities
• Includes certified Full-Speed USB 2.0 peripheral interface with internal oscillator

Applications

• Embedded control systems requiring mixed-signal processing
• USB-enabled data acquisition and communication devices
• Touch-sensitive user interfaces utilizing CapSense technology
• Low-power battery-operated instrumentation and sensors

Procurement Notes

Verify the specific ordering suffix against official Infineon/Cypress documentation to confirm package type, temperature grade, and lead-free status. Ensure compatibility with PSoC Creator development tools and confirm pinout requirements for the TQFP-100 package during schematic design.

Selection Notes

Select this component when a highly integrated MCU with configurable analog peripherals and USB connectivity is required. Consider the 32 KB Flash and 4 KB RAM limits for firmware size. Evaluate the 62 GPIO count against system interface needs and verify that the 50 MHz maximum clock speed meets timing constraints.

Part Context

This part belongs to the Cypress (now Infineon) PSoC 3 family, designed for applications needing significant analog flexibility alongside digital control. The CY8C32 series specifically targets cost-sensitive embedded designs that benefit from reducing bill-of-materials through on-chip integration of standard discrete components.

Replacement Considerations

Check official cross-reference lists for equivalent parts within the CY8C32 or CY8C4/5 families. Verify functional compatibility regarding pinouts, memory sizes, and peripheral availability before substitution.