C8051F311R

Overview

The C8051F311R is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F31x family, featuring a high-speed CIP-51 core operating at up to 25 MIPS. It integrates 16 kB of in-system programmable Flash memory and 1280 bytes of internal data RAM. The device includes four general-purpose 16-bit timers, a 16-bit Programmable Counter Array with five capture/compare modules, and hardware-enhanced serial ports including UART, SMBus, and SPI. It operates within a supply voltage range of 2.7 V to 3.6 V and supports industrial temperature ranges.

Feature Summary

• Features a fully 8051-compatible CIP-51 core with pipelined architecture for high throughput.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Provides flexible digital I/O configuration via a programmable digital crossbar and signal routing system.
• Integrates multiple analog peripherals including comparators with programmable hysteresis and a built-in temperature sensor.

Applications

• Industrial control systems requiring robust 8051 compatibility
• Sensor interface circuits utilizing onboard comparators and temperature sensing
• Embedded applications needing efficient serial communication via UART or SPI

Procurement Notes

Verify the specific suffix 'R' indicates tape and reel packaging when sourcing components. Confirm that the procurement matches the exact C8051F311 variant, as other members of the F31x family differ in package type or peripheral availability. Ensure the source document aligns with Rev. 1.8 specifications for accurate electrical characteristics.

Selection Notes

Select this component when a high-performance 8-bit MCU with integrated analog features is required. It is suitable for designs prioritizing low pin count due to its QFN-28 package option. Consider this part if the application demands in-system programming capabilities and flexible peripheral mapping through the digital crossbar.

Part Context

This device belongs to the C8051F31x series of mixed-signal microcontrollers designed by Silicon Labs. The series is characterized by its complete integration of analog and digital peripherals on a single chip, reducing the need for external components. The C8051F311 specifically utilizes a 28-pin QFN package, distinguishing it from LQFP or smaller QFN variants within the same family.

Replacement Considerations

C8051F310, C8051F312, C8051F313, C8051F314, C8051F315, C8051F316, C8051F317