C8051F046-GQ

Overview

The C8051F046-GQ 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 at a 25 MHz clock frequency. 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 encompass a Bosch CAN 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 enabling non-intrusive in-circuit debugging
• High-speed pipelined 8051 architecture executing most instructions in one or two system clocks
• Programmable 10-bit SAR ADC with differential inputs and windowed interrupt generation

Applications

• Industrial control systems requiring CAN bus connectivity
• Data acquisition applications utilizing the integrated 10-bit ADC
• Embedded systems needing in-system programming capabilities
• Automotive instrumentation compatible with CAN protocols

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment against the TQFP-100 specification prior to integration. Ensure design compliance with the specified 2.7 V to 3.6 V operating voltage limits. Review the datasheet revision history for any updates regarding electrical characteristics or pin assignments before finalizing procurement orders.

Selection Notes

Select this component when a fully static 8051 MCU with integrated CAN functionality is required. It is suitable for designs prioritizing in-system programmability and mixed-signal processing. Consider the 32 kB Flash size relative to application code requirements. Evaluate the 10-bit ADC resolution against signal accuracy needs. Verify that the 100-pin TQFP package fits the target PCB layout constraints.

Part Context

This part belongs to the C8051F04x series of fully integrated mixed-signal microcontrollers. The family shares a common CIP-51 core and peripheral set, differentiated primarily by Flash memory capacity and ADC resolution. The C8051F046 variant specifically offers 32 kB Flash and a 10-bit ADC, distinguishing it from higher-capacity models like the F040/1 which feature 64 kB Flash and 12-bit ADCs.

Replacement Considerations

Public confirmed substitute part numbers: C8051F040-GQ, C8051F041-GQ, C8051F042-GQ, C8051F043-GQ, C8051F044-GQ, C8051F045-GQ, C8051F047-GQ.