C8051F305-GM

Overview

The C8051F305-GM is a mixed-signal ISP Flash microcontroller from the Silicon Labs C8051F30x family. It features a high-speed 8051 core with up to 25 MIPS throughput at a 25 MHz clock frequency. The device includes 2 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. It operates on a supply voltage range of 2.7 V to 3.6 V, supporting typical operating currents of 6.6 mA at 25 MHz and 14 μA at 32 kHz. The component integrates an on-chip debug circuitry, a programmable internal oscillator with ±2% accuracy, and digital peripherals including UART, SMBus, timers, and a Programmable Counter Array.

Feature Summary

• Integrated on-chip debug circuitry enables full-speed, non-intrusive in-system debugging without external emulators.
• High-speed pipelined 8051 core executes 70% of instructions in one or two system clocks for improved throughput.
• Supports in-system programming of Flash memory for field upgrades and non-volatile data storage.
• Includes a programmable internal oscillator with ±2% accuracy suitable for UART operation.

Applications

• Embedded systems requiring direct in-system programming capabilities
• Low-power applications utilizing stop mode current reduction
• Industrial control logic using hardware-enhanced serial ports

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the datasheet indicates availability in both QFN-11 and SOIC-14 configurations. Confirm the exact Flash size variant, as the C8051F30x family spans multiple memory capacities. Ensure compliance with the specified 2.7 V to 3.6 V supply voltage requirements during integration.

Selection Notes

Select this component when a fully 8051-compatible architecture with mixed-signal capabilities is required. It is suitable for designs needing integrated analog peripherals like comparators and temperature sensors alongside standard digital interfaces. Consider the limited 2 kB Flash capacity for smaller firmware footprints compared to other members of the F30x series.

Part Context

The C8051F305-GM belongs to the C8051F30x family of mixed-signal ISP Flash MCUs. This family is characterized by complete monolithic integration of a high-speed 8051 CPU, Flash memory, SRAM, and various analog and digital peripherals. The devices are designed to reduce board space and component count by providing a true system-on-a-chip solution.

Replacement Considerations

Public confirmed substitute part numbers: C8051F300, C8051F301, C8051F302, C8051F303, C8051F304.