C8051F042-GQR

Overview

The C8051F042-GQR is an 8-bit microcontroller from the Silicon Labs C8051F04x family, featuring a high-speed pipelined 8051 core capable of up to 25 MIPS throughput with a 25 MHz clock. It integrates 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM. The device includes a 10-bit SAR ADC with 13 external inputs, three analog comparators, and a precision voltage reference. Digital peripherals support CAN 2.0B, SMBus, SPI, and dual UARTs concurrently. 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 100-TQFP package.

Feature Summary

• Features a fully 8051 compatible CIP-51 core with improved instruction execution speed.
• Integrates a 10-bit SAR ADC with programmable gain amplifier and windowed interrupt generator.
• Includes on-chip JTAG debug circuitry for non-intrusive in-circuit debugging.
• Supports concurrent operation of Bosch CAN 2.0B, SMBus, SPI, and two UART serial ports.

Applications

• Industrial control systems requiring CAN bus communication
• Data acquisition applications utilizing onboard analog-to-digital conversion
• Embedded systems needing full-speed in-circuit debugging capabilities

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific revision status, as this part is marked Not Recommended for New Designs. Ensure compatibility with existing PCB footprints for the 100-TQFP package. Review the latest datasheet for any updates regarding electrical characteristics or pin assignments before finalizing procurement.

Selection Notes

Select this component when a fully static 8051 architecture with integrated mixed-signal peripherals is required. It is suitable for designs prioritizing single-chip integration of analog and digital functions. Consider the available I/O count and memory size relative to application requirements. Evaluate the power consumption profiles across different operating modes if battery life is a constraint.

Part Context

This microcontroller belongs to the C8051F04x series, which provides a comprehensive set of analog and digital peripherals on a single chip. The series is designed for cost-sensitive embedded applications that demand high performance and low power consumption. The GQR suffix indicates the specific tape and reel packaging format for surface-mount assembly.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.