C8051F38B-B-GQR

Overview

The C8051F38B-B-GQR is an 8-bit microcontroller from Silicon Labs, part of the C8051F38x family. It features a high-speed 8051 core operating up to 48 MIPS with pipelined architecture. The device integrates 32 kB of Flash memory and 2.25 kB of RAM. Key peripherals include a 10-bit ADC with up to 500 ksps sampling rate, two comparators, and multiple digital interfaces such as SPI, I2C/SMBus, and UARTs. It operates on a voltage supply of 2.7 V to 5.25 V and supports industrial temperature ranges from -40 °C to +85 °C.

Feature Summary

• High-performance 8051 core with pipelined instruction execution for fast processing speeds.
• Integrated mixed-signal capabilities including a high-speed 10-bit ADC and analog comparators.
• Comprehensive digital peripheral set featuring multiple serial communication interfaces and timers.
• On-chip debug circuitry enabling non-intrusive in-system debugging without external emulators.

Applications

• Industrial control systems requiring mixed-signal processing
• Data acquisition applications utilizing onboard ADC and sensors
• Embedded devices needing robust serial communication interfaces

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity upon receipt, as surface-mount components are sensitive to physical damage. Ensure compatibility with existing PCB footprints and verify that the specific revision matches design requirements. Check for any end-of-life notifications or obsolescence warnings prior to final procurement decisions.

Selection Notes

Select this model when a compact 8-bit solution with integrated analog peripherals is required. Consider the 32 kB Flash size against application code requirements. Evaluate the 2.25 kB RAM limit for data handling needs. Verify that the 32-pin LQFP package fits the mechanical constraints. Ensure the 2.7 V to 5.25 V supply range aligns with the system power architecture.

Part Context

This component belongs to the C8051F38x series of fully integrated mixed-signal System-on-Chip microcontrollers. It shares architectural similarities with other members like the C8051F388 and C8051F389 but differs in memory capacity and pin count. The series is known for high integration, reducing external component counts. It utilizes the CIP-51 core, offering enhanced performance over traditional 8051 designs while maintaining software compatibility.

Replacement Considerations

Consult official documentation for cross-references. No verified public substitute part numbers are identified in the provided source material.