CY7C63743C-QXC

Application Specific Microcontrollers Overview

The CY7C63743C-QXC is an 8-bit RISC microcontroller from the enCoRe™ USB family, designed as a low-speed USB and PS/2 peripheral controller. It features an M8B core with up to 12 MHz internal CPU clock speed and supports 8 Kbytes of OTP EPROM alongside 256 bytes of RAM. The device integrates a crystalless oscillator, eliminating the need for external crystals or resonators. It includes an integrated USB transceiver compliant with USB Specification Version 2.0 and HID Specification Version 1.1. The component operates within a voltage range of 4.0V to 5.5VDC and is available in a 24-pin SOIC package.

Application Specific Microcontrollers Feature Summary

• Integrated crystalless oscillator with auto-tuning to USB timing requirements (6 MHz ±1.5%)
• Auto-configuring interface supporting both USB and PS/2 modes without external switching components
• Built-in 3.3V regulator providing power for the USB D– pull-up resistor
• Up to 16 configurable GPIO pins with high current sink capability of 50 mA per pin

Application Specific Microcontrollers Applications

• USB and PS/2 mice
• Gamepads and joysticks
• Wireless RF input interfaces utilizing capture timers

Application Specific Microcontrollers Procurement Notes

Verify that the specific suffix 'QXC' corresponds to the 24-pin SOIC package variant as documented for the CY7C63743C series. Confirm RoHS compliance status, as standard versions may not meet current environmental regulations. Ensure firmware compatibility with the M8B architecture and verify that the OTP programming requirements align with available industry-standard programmers.

Application Specific Microcontrollers Selection Notes

Select this component when a combined USB and PS/2 solution is required to minimize external bill of materials. The integrated oscillator and regulators reduce component count compared to discrete solutions. Consider the 24-pin form factor if additional GPIO lines are needed beyond the 18-pin variants. Note that the device is marked as Not Recommended for New Designs; evaluate long-term availability and potential obsolescence risks before finalizing the design.

Application Specific Microcontrollers Part Context

The CY7C63743C belongs to the Cypress enCoRe™ USB combination controller family, which also includes the CY7C63722C and CY7C63723C models. These devices share the same core architecture and peripheral set but differ primarily in package options and pin counts. The CY7C63743C specifically utilizes a 24-pin footprint, offering more general-purpose I/O lines than the 18-pin CY7C63723C.

Application Specific Microcontrollers Replacement Considerations

Direct functional substitutes within the same family include the CY7C63743-SC and CY7C63743-SXCT. Verify package compatibility and electrical specifications when cross-referencing with Infineon-branded equivalents, as manufacturing ownership has transferred.