CY7C63743-PXC

Application Specific Microcontrollers Overview

The CY7C63743-PXC is an 8-bit RISC microcontroller from the enCoRe™ USB family, designed for low-speed USB and PS/2 peripheral applications. It features a crystalless internal oscillator with precision tuning to 6 MHz ±1.5% for USB compliance, eliminating external crystals. The device integrates 8 Kbytes of OTP EPROM and 256 bytes of RAM. It supports one USB device address and three data endpoints via an integrated SIE and transceiver. The MCU provides up to 16 configurable GPIO pins with high current sink capabilities and operates within a 4.0V to 5.5V supply range at temperatures from 0°C to 70°C.

Application Specific Microcontrollers Feature Summary

• Crystalless internal oscillator with auto-tuning to 6 MHz ±1.5% for USB Specification Version 2.0 compliance
• Integrated USB Serial Interface Engine (SIE) supporting one device address and three data endpoints
• Auto-configuring interface allowing seamless operation as either USB or PS/2 without external switching components
• Up to 16 versatile GPIO pins with individually configurable drive strength up to 50 mA sink current

Application Specific Microcontrollers Applications

• Low-speed USB mice and game controllers
• PS/2 keyboards and pointing devices
• Joysticks and gamepads
• Wireless peripherals utilizing capture timers for RF input interfaces

Application Specific Microcontrollers Procurement Notes

Verify component authenticity through authorized Infineon distributors. Confirm package type matches the required 24-pin configuration (SOIC, PDIP, or QSOP). Check manufacturing date codes against shelf-life requirements, as the device has specific moisture sensitivity handling needs. Ensure firmware compatibility with the M8B core architecture before integration into new designs.

Application Specific Microcontrollers Selection Notes

Select this model when designing dual-mode USB/PS/2 peripherals requiring minimal external component count. Choose over variants with fewer I/O pins if more than 10 general-purpose inputs are needed. Consider the 24-pin package options based on board space constraints. Verify that the 8 Kbyte OTP memory capacity is sufficient for the target application firmware.

Application Specific Microcontrollers Part Context

The CY7C63743 belongs to the Cypress Semiconductor (now Infineon) enCoRe™ USB family, which includes the CY7C63722 and CY7C63723 models. These devices share the same M8B core and USB functionality but differ in pin counts and package availability. The CY7C63743 specifically offers the highest I/O count in the series with 16 GPIOs available in 24-pin packages.

Application Specific Microcontrollers Replacement Considerations

Direct pin-compatible replacements include other members of the CY7C637xx family such as the CY7C63723, provided the reduced I/O count meets design requirements. Cross-reference datasheet revisions to ensure register compatibility. No direct modern equivalents exist; legacy support may be limited.