C8051F389-GQR

Overview

The C8051F389-GQR is an 8-bit microcontroller from the Silicon Labs C8051F38x family, featuring a high-speed 8051 core with up to 48 MIPS throughput. It integrates 64 kB of in-system programmable Flash memory and 4352 bytes of RAM. The device includes a full-speed USB 2.0 function controller with integrated transceiver and clock recovery, eliminating external components. Analog peripherals consist of a 10-bit ADC with up to 500 ksps throughput, two comparators, and a temperature sensor. It operates within a supply voltage range of 1.8 V to 3.6 V, extending to 5.25 V using on-chip regulators, and supports a commercial temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a full-speed USB 2.0 function controller with built-in transceiver and clock recovery for simplified system design.
• Features a pipelined 8051 core capable of up to 48 MIPS execution speed with expanded interrupt handling.
• Includes a 10-bit analog-to-digital converter with multiplexer support and internal voltage reference options.
• Provides non-intrusive on-chip debug capabilities allowing breakpoints and memory inspection without external emulators.

Applications

• USB-enabled embedded control systems
• Data acquisition modules requiring analog signal processing
• Portable instrumentation with low-power requirements
• Industrial communication interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product selection guide to confirm package type and temperature rating. Confirm that the required peripheral features, such as the presence or absence of the 10-bit ADC and USB controller, match the exact part number variant. Check for any recent Product Change Notifications regarding assembly sources or labeling updates before finalizing procurement.

Selection Notes

Select this component when a compact solution combining USB connectivity with mixed-signal capabilities is required. The C8051F389 variant specifically offers 64 kB Flash and 4352 bytes RAM in a 32-pin LQFP package. Ensure the application benefits from the integrated USB transceiver to reduce bill-of-materials complexity. Compare against other C8051F38x members if different pin counts or memory sizes better suit the design constraints.

Part Context

This device belongs to the C8051F38x family of mixed-signal microcontrollers designed for high integration. It shares the same core architecture and peripheral set as siblings like the C8051F380 and C8051F388, differing primarily in memory size, package form factor, and specific peripheral availability. The family targets applications needing robust USB communication alongside precise analog measurement in a small footprint.

Replacement Considerations

Direct substitutes within the C8051F38x series include the C8051F389-GM (QFN32 package) for identical functionality in a different form factor. Other family members may serve as alternatives if pin count or memory differences are acceptable, provided the specific peripheral configuration matches the original design requirements.