C8051F304-GMR

Overview

The C8051F304-GMR is a mixed-signal ISP Flash microcontroller from Silicon Labs, part of the C8051F30x family. It features an 8-bit CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock frequency. The device includes 4 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. It provides 8 digital I/O pins, all 5 V tolerant, along with hardware-enhanced UART and SMBus serial ports. The component operates on a supply voltage ranging from 2.7 V to 3.6 V and supports a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrated high-speed 8051-compatible microcontroller core with pipelined architecture for efficient instruction execution.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Hardware-enhanced communication interfaces including UART and SMBus for reliable serial data transfer.
• Programmable Counter Array (PCA) supporting capture/compare functions and pulse width modulation.

Applications

• Portable medical equipment
• Weigh scales
• Test equipment
• Embedded control systems

Procurement Notes

Verify the specific package variant, as the C8051F304 is available in QFN-11 or SOIC-14 configurations. Confirm that the 'Not Recommended for New Designs' status aligns with your product lifecycle requirements. Ensure compatibility with existing development tools and verify pinout assignments against your schematic before finalizing procurement.

Selection Notes

Select this component when a compact, analog-intensive MCU with integrated Flash and debug capabilities is required. It is suitable for applications needing 5 V tolerant I/O and standard serial communication protocols. Consider alternative members of the C8051F3xx series if higher memory capacity or additional analog peripherals are necessary for the design.

Part Context

This component belongs to the C8051F30x mixed-signal ISP Flash MCU family by Silicon Labs. The family shares a common architecture but varies in memory size and peripheral availability. The C8051F304 specifically offers 4 kB Flash and lacks the ADC found in other variants like the F300 or F302, focusing instead on digital I/O and communication interfaces.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Designers should consult Silicon Labs documentation for current recommended replacements due to the 'Not Recommended for New Designs' status.