C8051F127-GQ

Overview

The C8051F127-GQ is an 8-bit microcontroller from Silicon Labs, part of the C8051F12x/13x family. It features a pipelined CIP-51 core with 50 MIPS throughput at 50 MHz using a 2.7–3.6 V supply. The device includes 128 kB banked Flash and 8448 bytes internal RAM. Analog peripherals consist of a 10-bit SAR ADC with up to 100 ksps throughput and two 12-bit DACs. Digital interfaces include hardware SMBus, SPI, and dual UARTs. It operates within a -40°C to +85°C temperature range in a TQFP-64 package.

Feature Summary

• High-speed CIP-51 core executes 70% of instructions in one or two system clocks.
• Integrated on-chip JTAG debug circuitry supports full-speed non-intrusive in-circuit debugging.
• Hardware serial ports allow concurrent operation of SMBus, SPI, and dual UARTs.
• Programmable digital crossbar allows flexible assignment of peripheral signals to I/O pins.

Applications

• Industrial control systems
• Data acquisition modules
• Portable instrumentation

Procurement Notes

Verify component authenticity through authorized channels as this part is designated Not Recommended for New Designs. Confirm specific ordering suffixes match required packaging and temperature grades. Check current lifecycle status before finalizing designs due to potential obsolescence.

Selection Notes

Select this model when high integration of analog and digital peripherals is required in a compact form factor. The CIP-51 architecture offers superior performance compared to standard 8051 cores. Ensure design requirements align with the 50 MIPS processing speed and available memory resources.

Part Context

This component belongs to the C8051F12x/13x series of mixed-signal System-on-Chip microcontrollers. These devices combine a high-speed 8051-compatible processor with extensive on-chip memory and peripheral sets. The series is designed for applications requiring precise analog signal processing alongside robust digital control capabilities.

Replacement Considerations

Silicon Labs recommends transitioning to newer product lines as this family is not recommended for new designs. Consult official substitution guides for compatible alternatives that maintain similar pinouts and functionality.

FAQ

Does the C8051F127 support simultaneous communication via multiple serial protocols?

Yes, the device integrates hardware SMBus, SPI, and two UART serial ports that can operate concurrently.

What is the maximum sampling rate of the integrated ADC?

The 10-bit SAR ADC supports a programmable throughput of up to 100 ksps.