C8051F38A-GQ

Overview

The C8051F38A-GQ is an 8-bit microcontroller from the Silicon Labs C8051F38x series, featuring a high-speed 8051 core operating at up to 48 MIPS. It integrates 32 kB of in-system programmable Flash memory and 2.25 kB of RAM within a 48-pin TQFP package. The device supports a voltage supply range of 2.7 V to 5.25 V and operates across a temperature range of –40 °C to +85 °C. Key peripherals include a 10-bit ADC with up to 500 ksps conversion rate, two comparators, six general-purpose 16-bit timers, and multiple communication interfaces including SPI, I2C/SMBus, and UART.

Feature Summary

• Integrated on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• High-performance pipelined 8051 architecture executing 70% of instructions in one or two system clocks.
• Comprehensive analog subsystem featuring a 10-bit ADC with built-in multiplexer, internal voltage reference, and temperature sensor.
• Flexible clocking system supporting internal oscillators with ±1.5% accuracy and external crystal or RC sources.

Applications

• Industrial control systems requiring robust peripheral integration
• Sensor interface applications utilizing onboard analog capabilities
• Motor control implementations leveraging timer and PWM features
• Embedded systems needing reliable in-system programming

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package integrity upon receipt, as the 48-TQFP form factor requires precise handling during surface-mount assembly. Ensure design compliance with the specified 2.7 V to 5.25 V operating voltage range. Review the datasheet for absolute maximum ratings to prevent damage during soldering or operation. Validate that the specific revision matches project requirements due to potential hardware incompatibilities with prior generations.

Selection Notes

Select this component when a fully integrated 8-bit solution with significant analog capability is required. The C8051F38A-GQ offers a balance of processing speed and peripheral density suitable for complex embedded tasks. Consider the 48-pin TQFP package constraints regarding PCB real estate and thermal management. Evaluate the available GPIO count against interface requirements before finalizing the selection.

Part Context

This microcontroller belongs to the C8051F38x family, which provides compatibility with the C8051F34x series while offering enhanced performance and additional peripherals. The device represents a mature silicon platform designed for cost-sensitive industrial and automotive applications. It utilizes the C2 interface for programming and debugging, distinguishing it from older parallel programming methods.

Replacement Considerations

The manufacturer has designated this part as Not Recommended for New Designs. Verify availability of end-of-life notices and last-time-buy windows. Consult official documentation for recommended successor devices within the EFM8 or newer C8051 families to ensure long-term supply chain stability.