C8051F125-GQR

Overview

The C8051F125-GQR is an 8-bit microcontroller from the Silicon Labs C8051F12x/13x family, featuring a pipelined CIP-51 core with 100 MIPS throughput. It integrates 128 kB of in-system programmable Flash and 8448 bytes of internal RAM. The device includes a 12-bit SAR ADC with up to 8 external inputs and a programmable gain amplifier. Digital peripherals consist of hardware SMBus, SPI, two UARTs, and multiple timers. It operates on a 2.7–3.6 V supply and is housed in a 64-pin TQFP package.

Feature Summary

• High-speed CIP-51 core executing 70% of instructions in one or two system clocks
• Integrated 12-bit SAR ADC with programmable gain amplifier and windowed interrupt generator
• On-chip JTAG debug circuitry supporting full-speed non-intrusive in-circuit debugging
• Hardware serial interfaces including SMBus, SPI, and dual UARTs available concurrently

Applications

• Industrial control systems requiring high-speed processing
• Power electronics applications utilizing precise analog measurement
• Communication equipment needing concurrent serial interface support

Procurement Notes

Verify component status as this series is designated Not Recommended for New Designs. Confirm package type matches project requirements. Check for RoHS compliance documentation. Ensure development tools are compatible with the CIP-51 architecture. Review datasheet revisions for any specific electrical characteristic updates.

Selection Notes

Select this model for applications requiring 128 kB of Flash memory and a 12-bit ADC within a 64-pin form factor. Consider the 100 MIPS performance for complex signal processing tasks. Evaluate power consumption against the 2.7–3.6 V operating range. Verify that the integrated peripherals meet communication and timing needs without external components.

Part Context

This component belongs to the C8051F12x/13x mixed-signal SoC family. These devices combine a fast 8051-compatible core with extensive on-chip memory and analog peripherals. The family supports both 64-pin and 100-pin TQFP packages, offering flexibility for various pin count requirements in embedded designs.

Replacement Considerations

Public confirmed substitute part numbers: None identified.