C8051F389-B-GMR

Overview

The C8051F389-B-GMR is an 8-bit mixed-signal microcontroller from Silicon Labs, featuring a high-speed 8051 core operating at up to 48 MIPS. It integrates 64 kB of in-system programmable Flash memory and 4352 bytes of RAM. The device includes a 10-bit ADC with up to 500 ksps conversion rate, two comparators, and multiple digital peripherals such as SPI, I2C/SMBus, and UARTs. It operates on a voltage supply of 2.7 to 5.25 V and is housed in a 32-pin QFN package.

Feature Summary

• Integrated 10-bit analog-to-digital converter with built-in multiplexer and temperature sensor
• High-speed pipelined 8051 core supporting up to 48 MIPS operation
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging
• Flexible clock sources including internal oscillators and external options with on-the-fly switching

Applications

• Industrial control systems requiring mixed-signal processing
• Battery-powered devices utilizing wide voltage range operation
• Data acquisition systems leveraging the integrated ADC and comparators
• Embedded applications needing robust communication interfaces like SPI and UART

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific revision level matches project requirements, as datasheet revisions may indicate behavioral updates. Ensure handling procedures account for moisture sensitivity classification during storage and reflow soldering processes to maintain device integrity.

Selection Notes

Select this component when a compact 32-pin solution with significant onboard Flash and RAM is required. Consider its wide supply voltage range for designs lacking stable power rails. Evaluate the pin count against peripheral needs, noting that port I/O is software-configurable via the crossbar decoder for flexible mapping.

Part Context

This part belongs to the C8051F38x family of fully integrated mixed-signal system-on-chip microcontrollers. It shares architectural similarities with other members like the C8051F388 but differs in package type and specific memory configurations. The family emphasizes high performance and low power consumption within a small footprint.

Replacement Considerations

Public confirmed substitute part numbers: C8051F389-B-GQ.