C8051F044-GQR

Overview

The C8051F044-GQR is an 8-bit microcontroller from the Silicon Labs C8051F04x family, featuring a high-speed pipelined 8051 core operating at up to 25 MHz. 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 consist of a Bosch CAN 2.0B controller, hardware SMBus, SPI, two UARTs, and multiple timers. It operates on a 2.7 V to 3.6 V supply within a –40 °C to +85 °C temperature range.

Feature Summary

• Integrated Bosch CAN 2.0B controller for robust serial communication
• On-chip JTAG debug circuitry supporting full-speed non-intrusive in-circuit debugging
• High-speed 8051 core executing 70% of instructions in one or two system clocks
• Programmable 10-bit SAR ADC with configurable gain and windowed interrupt generation

Applications

• Industrial control systems requiring CAN bus connectivity
• Embedded sensor interfaces utilizing integrated analog-to-digital conversion
• In-circuit programming and debugging environments
• Low-voltage embedded applications needing precise voltage monitoring

Procurement Notes

Verify component authenticity through authorized distributors as this part is marked Not Recommended for New Designs. Confirm package integrity upon receipt, as moisture sensitivity requires proper handling. Review the latest datasheet revision for any pinout or electrical characteristic updates before finalizing procurement specifications.

Selection Notes

Select this component when a fully static 8051 architecture with integrated CAN functionality is required. Ensure the 2.7 V to 3.6 V supply range aligns with system power rails. Consider the 64-pin TQFP package constraints for PCB layout. Verify that the 10-bit ADC resolution meets application accuracy requirements compared to higher-resolution alternatives in the same family.

Part Context

This microcontroller belongs to the C8051F04x series, which provides mixed-signal capabilities on a single chip. The GQR suffix indicates a Green (RoHS compliant) 64-pin TQFP package. The device is designed for cost-sensitive applications requiring significant on-chip integration, reducing external component count for analog and digital interface needs.

Replacement Considerations

Consult the official datasheet for direct pin-compatible substitutes within the C8051F04x family, such as the C8051F040 or C8051F042, noting differences in ADC resolution and DAC availability.