C8051F311-GMR

Overview

The C8051F311-GMR is an 8-bit microcontroller from the Silicon Labs C8051F31x family, featuring a CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 16 kB of in-system programmable Flash and 1280 bytes of internal data RAM. The device includes a 10-bit ADC with up to 200 ksps conversion rate, two voltage comparators, and a built-in temperature sensor. Digital peripherals consist of hardware-enhanced UART, SMBus, SPI, four 16-bit timers, and a Programmable Counter Array. It operates on a 2.7 V to 3.6 V supply within a –40 °C to +85 °C temperature range and is housed in a 28-pin QFN package.

Feature Summary

• Pipelined CIP-51 architecture executes 70% of instructions in one or two system clocks for high-speed processing.
• On-chip debug circuitry enables full-speed, non-intrusive in-system debugging without external emulators.
• Programmable digital crossbar allows flexible mapping of peripheral functions to physical I/O pins.
• Internal oscillator provides 24.5 MHz accuracy supporting crystal-less UART operation.

Applications

• In-system programming and firmware updates via ISP Flash capabilities
• Industrial control systems requiring mixed-signal processing
• Battery-powered devices utilizing low-power stop modes

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment against the 28-pin QFN specification. Review the datasheet revision history for any errata or silicon revisions that may impact design implementation. Ensure compliance with RoHS standards if required by your manufacturing process.

Selection Notes

Select this model when 16 kB of program memory and 10-bit analog resolution are required. The 28-pin QFN package suits space-constrained designs needing multiple digital interfaces. Consider alternative C8051F31x variants if different memory sizes or pin counts better fit the application constraints.

Part Context

This component belongs to the C8051F31x series of fully integrated mixed-signal system-on-chip microcontrollers. The series shares the CIP-51 core and common peripheral sets, differing primarily in Flash size, RAM capacity, and package options. It represents a high-performance 8-bit MCU solution designed for applications demanding precise analog control alongside robust digital processing.

Replacement Considerations

Direct substitutes include other members of the C8051F31x family such as the C8051F310, C8051F312, or C8051F313, provided pin compatibility and memory requirements align. Verify package type differences between LQFP and QFN variants before substitution.