C8051F312-GQR

Overview

The C8051F312-GQR is an 8-bit microcontroller from the Silicon Labs C8051F31x family, featuring a high-speed CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock frequency. It integrates 8 kB of in-system programmable Flash memory and 1280 bytes of internal data RAM. The device includes hardware-enhanced serial ports such as UART, SMBus, and SPI, along with four general-purpose 16-bit timers and a Programmable Counter Array. It operates within a supply voltage range of 2.7 V to 3.6 V and supports a commercial temperature range of –40 °C to +85 °C.

Feature Summary

• Features a fully 8051-compatible CIP-51 core with pipelined architecture for improved instruction execution speed.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Integrates multiple digital peripherals including UART, SMBus, SPI, and a Programmable Counter Array with capture/compare modules.
• Supports flexible clock sources with an internal oscillator accurate to ±2% and the ability to switch between clock sources on-the-fly.

Applications

• Embedded control systems requiring in-system programming capabilities
• Industrial monitoring applications utilizing onboard comparators and timers
• Communication interfaces leveraging hardware-enhanced serial ports

Procurement Notes

Verify component authenticity through official Silicon Labs channels or authorized distributors. Confirm package integrity and pin alignment against the 32-LQFP specification. Review the latest datasheet revision for any errata or specific handling instructions relevant to this part number before integration into production designs.

Selection Notes

Select this model when 8 kB of Flash memory suffices for application code requirements. Ensure the design utilizes the 32-pin LQFP package format. Verify that the required analog peripherals align with the device's comparator and timer availability, noting that this specific variant lacks the 12-bit ADC found in other members of the F31x series.

Part Context

This component belongs to the C8051F31x series of mixed-signal System-on-Chip microcontrollers. It shares the same core architecture and peripheral set as siblings like the C8051F310 and C8051F311, differing primarily in Flash memory capacity and package options. The GQR suffix indicates a specific tape-and-reel packaging configuration suitable for automated surface-mount assembly processes.

Replacement Considerations

Direct functional substitutes within the same family include C8051F310-GQR, C8051F311-GQR, C8051F313-GQR, C8051F314-GQR, C8051F315-GQR, C8051F316-GQR, and C8051F317-GQR. These alternatives offer varying Flash sizes and package types but maintain pin compatibility and core functionality.