C8051F040-GQR

Overview

The C8051F040-GQR is an 8-bit mixed-signal microcontroller from Silicon Labs, featuring a CIP-51 core operating at up to 25 MHz. It integrates 64 kB of Flash memory and 4352 bytes of internal data RAM within a 100-pin TQFP package. The device includes a 12-bit SAR ADC with 13 external inputs, two 12-bit DACs, three analog comparators, and a precision voltage reference. Digital peripherals encompass a Bosch CAN 2.0B controller, SMBus, SPI, dual UARTs, and multiple timers.

Feature Summary

• High-speed pipelined CIP-51 core delivering up to 25 MIPS throughput
• Integrated 12-bit ADC with programmable gain amplifier and windowed interrupt generator
• Hardware support for Bosch CAN 2.0B, SMBus, SPI, and dual UART interfaces
• On-chip JTAG debug circuitry enabling non-intrusive in-system debugging

Applications

• Distributed measurement and control systems
• Vehicle CAN bus intelligent nodes
• Embedded PLC development
• Portable medical equipment
• Test equipment and fiber optic systems

Procurement Notes

Verify the component status as Not Recommended for New Designs (NRND) before integration. Confirm the specific revision level against the latest datasheet to ensure compatibility with existing designs. Check for End of Life announcements or Last Time Buy windows associated with this part number to manage supply chain risks effectively.

Selection Notes

Select this MCU for applications requiring high analog integration alongside standard 8051 compatibility. The 12-bit ADC and dual DACs suit precision signal conditioning tasks. Ensure the design accommodates the 2.7V to 3.6V supply range and utilizes the 100-pin TQFP footprint. Consider the NRND status when planning long-term production lifecycles.

Part Context

This component belongs to the C8051F04x family of highly integrated mixed-signal system-on-chip solutions. It combines a fast 8051-compatible processor with extensive on-chip peripherals, reducing external component count. The GQR suffix denotes the tape-and-reel packaging variant suitable for automated surface-mount assembly processes.

Replacement Considerations

Silicon Labs recommends the EFM32PG26B301F2048IL136 or other EFR32PG26 Series 2 MCUs as replacements for this discontinued part.