C8051F389-B-GQ

Overview

The C8051F389-B-GQ is an 8-bit microcontroller from Silicon Labs featuring a CIP-51 core operating up to 48 MIPS. It utilizes a 32-pin LQFP package and supports a voltage supply input of 2.7 to 5.25 V. The device integrates 64 kB of Flash memory and 4352 Bytes of RAM. Peripheral features include a 10-bit ADC with up to 500 ksps conversion rate, two comparators, six general-purpose 16-bit counter/timers, a 16-bit PCA, and multiple digital interfaces including SPI, I2C/SMBus, and UARTs.

Feature Summary

• High-speed pipelined CIP-51 architecture executing most instructions in one or two system clocks
• Integrated on-chip debug circuitry enabling full-speed non-intrusive in-system debugging without external emulators
• Flexible port I/O configuration with all pins being 5 V tolerant and capable of high sink current
• Comprehensive analog subsystem including a multiplexed 10-bit ADC, internal voltage reference, and temperature sensor

Applications

• Industrial control systems requiring robust I/O and analog processing
• Data acquisition applications utilizing the high-speed ADC and programmable window detector
• Embedded devices needing flexible serial communication via dual UARTs and SMBus

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific revision matches project requirements as the datasheet indicates this family is not recommended for new designs. Ensure proper handling procedures are followed due to moisture sensitivity classification. Validate pinout compatibility with existing PCB layouts before finalizing procurement decisions.

Selection Notes

Select this component when a fully integrated mixed-signal MCU with high-speed processing is required. The 32-pin LQFP package suits space-constrained designs compared to larger variants. Consider the 64 kB Flash capacity for complex firmware implementations. Evaluate the 2.7 V to 5.25 V operating range against power supply constraints. Review peripheral availability to ensure sufficient timers and communication interfaces are present for the target application.

Part Context

This part belongs to the C8051F38x series of flash microcontrollers from Silicon Labs. It shares architectural similarities with the C8051F34x series but offers enhanced performance and specific peripheral configurations tailored for mixed-signal applications. The device represents a mature technology line within the company's portfolio, providing a balance of processing power and analog integration for embedded control tasks.

Replacement Considerations

Public confirmed substitute part numbers: None identified.