C8051F304-GSR

Overview

The C8051F304-GSR is an 8-bit mixed-signal microcontroller from Silicon Labs, part of the C8051F30x family. It features a CIP-51 core with up to 25 MHz clock speed and 25 MIPS throughput. Memory includes 4 kB Flash and 256 bytes internal RAM. The device lacks an ADC but integrates a comparator, SMBus, UART, three 16-bit timers, and a PCA. It operates on 2.7 V to 3.6 V supply voltage within -40 °C to +85 °C temperature range. Package options include QFN-11 or SOIC-14.

Feature Summary

• High-speed CIP-51 core executes most instructions in one or two system clocks for efficient processing.
• Integrated analog comparator supports programmable hysteresis and response time settings.
• On-chip debug circuitry enables full-speed, non-intrusive in-system debugging without external emulators.
• Programmable digital crossbar allows flexible mapping of peripheral functions to I/O pins.

Applications

• Industrial control systems
• Portable instrumentation
• Sensor signal conditioning
• Low-power embedded applications

Procurement Notes

Verify the specific suffix 'GSR' against the manufacturer's current documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status as required by your assembly process. Check for any obsolescence notices, as this component family is marked Not Recommended for New Designs. Ensure ESD handling protocols are followed during storage and installation.

Selection Notes

Select this model when 4 kB Flash memory suffices for application code and no onboard ADC is required. The integrated comparator provides necessary analog threshold detection capabilities. Consider the QFN-11 or SOIC-14 package based on PCB space constraints and soldering capabilities. Verify that the 2.7 V to 3.6 V operating voltage aligns with the target system power rails.

Part Context

This component belongs to the C8051F30x series of fully integrated mixed-signal System-on-Chip MCUs. The series shares a common architecture with varying memory sizes and peripheral configurations across models like F300 through F305. The C8051F304 specifically offers reduced Flash capacity compared to larger variants while maintaining identical core performance and peripheral sets.

Replacement Considerations

Consult official substitution guides for direct pin-compatible alternatives within the same family. Models such as C8051F303 or C8051F305 may offer different memory capacities but share similar interfaces. Verify software compatibility if migrating between variants with differing Flash sizes or peripheral availability.