C8051F38A-B-GQR

Overview

The C8051F38A-B-GQR 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 2.304 kB of RAM. The device includes a 10-bit ADC with up to 500 ksps conversion rate, two comparators, and multiple digital peripherals such as SPI, I2C/SMBus, and UARTs. It operates on a voltage supply of 2.7 V to 5.25 V and is available in a 48-pin TQFP package.

Feature Summary

• High-performance 8051 core with pipelined architecture for up to 48 MIPS execution speed
• Integrated analog peripherals including a 10-bit ADC with built-in multiplexer and two comparators
• Comprehensive digital interface suite supporting SPI, dual I2C/SMBus, and enhanced UARTs
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators

Applications

• Embedded systems requiring mixed-signal processing capabilities
• Industrial control applications utilizing sensor interfaces and PWM outputs
• Communication devices leveraging integrated serial protocols like SPI and UART
• Battery-powered or low-voltage systems supported by wide input voltage range

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'B' matches project requirements regarding temperature grade or revision. Check for 'Not Recommended for New Designs' status in current datasheets before finalizing procurement plans. Ensure ESD handling procedures are followed during storage and assembly.

Selection Notes

Select this MCU when a robust 8051 architecture with significant on-chip analog resources is needed. Consider the 32 kB Flash limit against application code size requirements. Evaluate the 48-pin TQFP footprint against PCB space constraints. Verify that the internal oscillator accuracy meets timing specifications for critical communication interfaces.

Part Context

This component belongs to the C8051F38x family of fully integrated mixed-signal System-on-Chip microcontrollers. It shares architectural similarities with the C8051F34x series but offers enhanced analog features and higher performance. The 'GQR' suffix indicates the 48-pin TQFP package type, while 'B' denotes specific manufacturing revisions or temperature ratings within the product line.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.