C8051F326-GMR

Overview

The C8051F326-GMR is an 8-bit microcontroller from the Silicon Labs C8051F32x family, housed in a 28-pin QFN package. It features a high-speed pipelined 8051 core operating at up to 25 MHz with 25 MIPS throughput. The device includes 16 kB of in-system programmable Flash memory and 1536 bytes of internal RAM. It integrates a full-speed USB 2.0 function controller with an integrated transceiver and clock recovery, eliminating the need for external components. The unit supports a supply voltage range of 2.7 V to 5.25 V and operates within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrated full-speed USB 2.0 function controller with on-chip clock recovery and transceiver
• High-speed pipelined 8051 core delivering up to 25 MIPS performance
• On-chip debug circuitry enabling non-intrusive in-system debugging without external emulators
• All digital I/O ports are 5 V tolerant with high sink current capability

Applications

• Embedded USB connectivity solutions
• Point-of-sale terminals
• Medical diagnostic equipment
• Weigh scales
• Voice over Internet Protocol telephones

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific GMR suffix indicates the reel packaging variant. Check for the 'Not Recommended for New Designs' status in current documentation before finalizing procurement plans. Ensure compatibility with existing design infrastructure regarding the 28-QFN footprint and voltage requirements.

Selection Notes

Select this component for applications requiring robust USB integration alongside standard 8051 processing capabilities. The wide supply voltage range allows flexibility in power system design. Consider the 5 V tolerant I/O for interfacing with legacy logic levels. Evaluate the available memory resources against application firmware size requirements. Verify that the package dimensions fit the target PCB layout constraints.

Part Context

This part belongs to the C8051F32x/34x family of mixed-signal microcontrollers designed by Silicon Laboratories. These devices are engineered to provide complete single-chip solutions for embedded USB applications. The family combines a fast 8051 CPU with extensive on-chip peripherals, reducing the need for external support components. This specific model represents a cost-effective option for high-volume production environments.

Replacement Considerations

Consult official Silicon Labs documentation for verified substitute part numbers within the C8051F32x series. Cross-reference pinouts and electrical specifications when considering alternative packages such as LQFP or TQFP variants. Ensure any replacement maintains the required USB functionality and memory capacity.