C8051F389-GQ

Overview

The C8051F389-GQ is a mixed-signal microcontroller from the Silicon Labs C8051F38x family, featuring an 8-bit 8051 core with up to 48 MIPS throughput. It integrates 64 kB of Flash memory and 4352 bytes of RAM within a 32-pin LQFP package. The device includes a full-speed USB function controller compliant with USB specification 2.0, supporting low-speed and full-speed operation without external crystals. Analog peripherals consist of a 10-bit ADC with up to 500 ksps throughput, two comparators, and a temperature sensor. Operating voltage ranges from 1.8 V to 3.6 V, extending to 5.25 V via on-chip regulators.

Feature Summary

• Integrates a high-speed pipelined 8051 core capable of executing most instructions in one or two system clocks for efficient processing.
• Includes a full-speed USB function controller with integrated transceiver and clock recovery, eliminating the need for external components.
• Features a 10-bit analog-to-digital converter with built-in multiplexer and a throughput rate of up to 500 ksps.
• Provides non-intrusive on-chip debug circuitry that supports breakpoints and single-stepping without requiring external emulators.

Applications

• USB-enabled data acquisition systems
• Industrial control interfaces
• Portable measurement instruments

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for the 32-pin LQFP configuration. Confirm supply voltage requirements align with the 1.8 V to 3.6 V operating range or utilize the internal regulator for higher voltages.

Selection Notes

Select this component when a compact solution requires both USB connectivity and high-speed analog conversion. The 32-pin LQFP package suits space-constrained designs compared to the 48-pin TQFP variants. Consider the absence of an internal voltage reference if using the ADC, as this variant relies on external references or VDD.

Part Context

This part belongs to the C8051F38x family of broad-based Flash MCUs designed for applications needing USB integration and mixed-signal capabilities. The family shares a common architecture but varies in memory size and peripheral availability. The C8051F389-GQ specifically targets designs requiring 64 kB of Flash and analog features within a smaller footprint than the TQFP options.

Replacement Considerations

C8051F389-B-GQ