C8051F300-GMR

Overview

The C8051F300-GMR is a mixed-signal ISP Flash microcontroller from Silicon Labs, featuring a high-speed 25 MIPS CIP-51 core operating at up to 25 MHz. It integrates 8 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. The device includes an 8-bit ADC with up to 500 ksps throughput, eight external inputs, and a programmable comparator. Supply voltage ranges from 2.7 V to 3.6 V, with typical operating current of 6.6 mA at 25 MHz and 14 μA at 32 kHz. It operates within a temperature range of –40 °C to +85 °C and is housed in an 11-pin QFN package measuring 3x3 mm.

Feature Summary

• Integrates a fully 8051-compatible CIP-51 microcontroller core with pipelined architecture for improved instruction throughput.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Features a programmable digital I/O crossbar allowing flexible mapping of internal digital resources to physical pins.
• Provides hardware-enhanced UART and SMBus serial ports alongside three general-purpose 16-bit counter/timers.

Applications

• Optical communication modules (XFP/SFP)
• Motor control systems
• Industrial equipment monitoring
• Medical devices such as capsule endoscopy

Procurement Notes

Verify the component status before procurement, as the datasheet explicitly marks this family as Not Recommended for New Designs. Confirm that the specific GMR suffix corresponds to the required 11-pin QFN package variant. Ensure design constraints accommodate the specified 2.7 V to 3.6 V supply voltage range and the -40 °C to +85 °C operating temperature limits.

Selection Notes

Select this component when a compact 8-bit mixed-signal MCU with integrated analog peripherals is required. The C8051F300 is suitable for applications needing an 8-bit ADC and programmable comparator within a small footprint. Consider alternative models from the same family if different memory sizes or pin counts are necessary, noting that all variants share similar core architectures.

Part Context

The C8051F300 belongs to the C8051F30x series of mixed-signal ISP Flash MCUs by Silicon Labs. This family shares a common CIP-51 core and peripheral set, differing primarily in Flash size, RAM capacity, and available analog features. The GMR suffix denotes the specific 11-pin QFN package configuration used in space-constrained designs.

Replacement Considerations

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

FAQ

Does the C8051F300 support on-chip debugging?

Yes, it includes on-chip debug circuitry that facilitates full-speed, non-intrusive in-system debugging without requiring an emulator.

What is the maximum clock frequency of the C8051F300?

The device supports a maximum system clock frequency of 25 MHz, achieving up to 25 MIPS throughput.