C8051F388-B-GQ

Overview

The C8051F388-B-GQ is a mixed-signal System-on-Chip microcontroller based on the CIP-51 8051 core, operating at up to 48 MIPS. It features 64 kB of in-system programmable Flash memory and 4352 bytes of RAM. The device includes a high-speed 10-bit ADC with up to 500 ksps throughput, two analog comparators, and an internal voltage reference. Digital peripherals consist of hardware-enhanced SPI, dual I2C/SMBus interfaces, and dual enhanced UARTs. It provides 40 general-purpose I/O pins that are 5 V tolerant, along with six 16-bit counter/timers and a Programmable Counter Array. The unit operates within a supply voltage range of 2.7 V to 5.25 V and supports an industrial temperature range from -40 °C to +85 °C.

Feature Summary

• High-performance pipelined CIP-51 architecture executing instructions in one or two system clocks
• Integrated mixed-signal capabilities including a 10-bit ADC with built-in multiplexer and dual comparators
• Comprehensive digital communication interfaces supporting SPI, dual I2C/SMBus, and dual UARTs
• On-chip debug circuitry enabling full-speed, non-intrusive in-system programming and debugging

Applications

• Industrial control systems requiring mixed-signal processing
• Data acquisition applications utilizing high-speed analog-to-digital conversion
• Embedded systems needing robust serial communication protocols
• Battery-powered devices supported by low-power management modes

Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors or certified suppliers. Confirm the specific revision level matches project requirements, as documentation indicates this family is not recommended for new designs. Ensure environmental compliance standards align with target market regulations. Validate package integrity upon receipt to prevent damage to the TQFP-48 leads during handling and installation processes.

Selection Notes

Select this component when existing legacy designs utilize the C8051F38x series and require maintenance rather than new development. Evaluate if the 48 MHz performance and integrated analog peripherals sufficiently meet system constraints. Consider the availability of established software drivers and development tools compatible with the CIP-51 core. Assess whether the specific pinout and memory configuration align with current board layout limitations.

Part Context

This part belongs to the C8051F388/9/A/B Flash MCU family from Silicon Labs. It shares architectural similarities with the C8051F34x series but offers distinct peripheral configurations and memory sizes. The device integrates a complete mixed-signal system on a single chip, reducing external component count. It utilizes the C2 interface for programming and debugging, distinguishing it from older 8051 implementations.

Replacement Considerations

Public confirmed substitute part numbers: None identified.