CY8C4246AXI-M443

Overview

The CY8C4246AXI-M443 is an ARM Cortex-M0 microcontroller from the Infineon PSoC 4 family. It features a maximum operating frequency of 48 MHz, 64 KB of Flash memory, and 8 KB of SRAM. The device includes one 12-bit SAR ADC with a sampling rate of 1 MSPS, eight TCPWM blocks, four SCB modules, and two LP comparators. It supports CapSense technology and LCD direct drive, offering 38 GPIO pins. Operating voltage ranges from 1.71 V to 5.5 V, with a temperature range of -40 °C to 105 °C.

Feature Summary

• Integrates CapSense technology for capacitive touch sensing applications
• Supports direct LCD driving capabilities for display interfaces
• Includes multiple Serial Communication Blocks (SCB) for flexible connectivity
• Features Low-Power Comparators for analog signal processing

Applications

• Human Machine Interface (HMI) systems
• Legacy HMI designs requiring PSoC 4 architecture
• Consumer electronics with touch input requirements
• Industrial control panels with LCD displays

Procurement Notes

Verify the specific ordering suffix M443 against the official Infineon datasheet to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the LQFP-44 package. Cross-reference the JTAG ID 0x11E2 for design-in validation. Confirm RoHS compliance status through current environmental declarations before procurement.

Selection Notes

Select this component when a balance of moderate Flash capacity and high-speed analog peripherals is required. The 48 MHz CPU speed suits applications needing efficient code execution without complex DSP capabilities. The inclusion of CapSense and LCD drivers reduces external component count compared to standard MCUs. Consider thermal performance within the 105 °C upper limit for enclosed enclosures.

Part Context

This part belongs to the PSoC 4200M series, designed for cost-sensitive applications requiring programmable analog and digital blocks. Unlike the CY8C4246AZS variant which may differ in packaging or release status, the AXI designation typically indicates a specific tape-and-reel or tray configuration depending on the manufacturer's current catalog. It serves as a mid-range solution within the Cortex-M0 ecosystem.

Replacement Considerations

Check for CY8C4246AZS-M443T as a potential alternative if package variations exist. Verify pin-to-pin compatibility with CY8C4246AXI-M445 if higher I/O counts are acceptable. Ensure software libraries are updated for any minor silicon revision differences between PSoC 4 variants.