C8051F303-GM

Overview

The C8051F303-GM is a mixed-signal ISP Flash microcontroller from Silicon Labs, featuring a high-speed 8051 core operating at up to 25 MHz. It provides 8 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. The device integrates hardware-enhanced UART and SMBus serial ports, three general-purpose 16-bit counter/timers, and a 16-bit Programmable Counter Array with capture/compare modules. It operates on a supply voltage range of 2.7 V to 3.6 V.

Feature Summary

• Features a fully 8051 compatible CIP-51 microcontroller core with pipelined instruction architecture for improved throughput.
• Includes an on-chip debug circuitry that facilitates full speed, non-intrusive in-system debugging without external emulators.
• Supports flexible clock sources including an internal oscillator with ±2% accuracy and external crystal or RC options.
• Provides a programmable digital I/O crossbar allowing software configuration of peripheral pin mapping.

Applications

• Embedded control systems requiring in-system programming capabilities
• Industrial monitoring applications utilizing the integrated comparator and temperature sensor
• Communication interfaces leveraging hardware-enhanced UART and SMBus ports

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific package variant matches design requirements, as the family supports both QFN and SOIC packages. Check current lifecycle status documentation, as this series may be marked Not Recommended for New Designs. Ensure compatibility with existing development tools such as Simplicity Studio for firmware deployment.

Selection Notes

Select this model when a complete system-on-a-chip solution is needed with analog peripherals like comparators and temperature sensors. Consider the 2.7 V to 3.6 V supply range for low-voltage applications. Evaluate the 8 kB Flash capacity against application code size requirements. Verify that the 11-pin QFN or 14-pin SOIC package fits the PCB layout constraints.

Part Context

This component belongs to the C8051F30x mixed-signal MCU family, which includes variants like the C8051F300, F301, F302, F304, and F305. These devices share a common architecture but differ in memory sizes and specific analog features. The C8051F303 specifically offers 8 kB Flash and lacks the 8-bit ADC found in the F300/F302 models.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Silicon Labs resources for current alternative recommendations within the same product family.