C8051F046-GQR

Overview

The C8051F046-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 32 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 comprise a Bosch CAN controller, hardware SMBus, SPI, two UARTs, and multiple timers. It operates on a 2.7 V to 3.6 V supply and is available in 64-pin TQFP packages.

Feature Summary

• Integrated Bosch CAN 2.0B controller for robust serial communication
• On-chip JTAG debug circuitry enabling non-intrusive in-circuit debugging
• High-speed 8051 core with pipelined architecture for improved throughput
• Programmable 10-bit SAR ADC with configurable gain and windowed interrupt

Applications

• Industrial control systems requiring CAN bus connectivity
• Embedded applications needing precise analog signal acquisition
• Data acquisition modules utilizing onboard ADC and comparators
• Systems requiring in-system programming and debugging capabilities

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and moisture sensitivity level handling procedures prior to assembly. Review the latest datasheet revision for any updates to electrical characteristics or pin definitions. Ensure compliance with RoHS directives and environmental regulations applicable to your region before finalizing procurement.

Selection Notes

Select this component when a fully static 8051 MCU with integrated CAN and high-resolution ADC is required. Consider the 32 kB Flash size against application code requirements. Evaluate the 64-pin TQFP package constraints for PCB layout. Note that this family is marked as not recommended for new designs; assess long-term availability and potential obsolescence risks before implementation.

Part Context

This part belongs to the C8051F04x series of mixed-signal microcontrollers. It shares architectural similarities with siblings like the C8051F040 and C8051F042 but differs in Flash capacity and ADC resolution. The GQR suffix indicates a specific tape-and-reel packaging configuration suitable for automated surface-mount assembly processes.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Silicon Labs for current alternative recommendations within the C8051F family or newer generations.