C8051F38B-B-GMR

Overview

The C8051F38B-B-GMR is a fully integrated mixed-signal System-on-Chip microcontroller from Silicon Labs, belonging to the C8051F38x family. It features a high-speed 8051-compatible core operating at up to 48 MIPS with pipelined architecture. The device integrates 32 kB of in-system programmable Flash memory and 2.25 kB of RAM. Key analog peripherals include a 10-bit ADC supporting up to 500 ksps, two comparators, and an internal voltage reference. Digital interfaces comprise two I2C/SMBus ports, two enhanced UARTs, and hardware-enhanced SPI. The unit operates on a supply voltage range of 2.7 V to 5.25 V within an industrial temperature range of -40 °C to +85 °C.

Feature Summary

• Features a high-performance 8051 core with pipelined instruction execution for efficient processing speeds.
• Integrates a 10-bit Analog-to-Digital Converter with built-in multiplexer and configurable voltage references.
• Includes comprehensive digital communication peripherals such as dual UARTs, dual SMBus, and SPI.
• Supports non-intrusive in-system debugging via on-chip debug circuitry without external emulators.

Applications

• Industrial control systems requiring mixed-signal processing
• Sensor interface modules utilizing ADC and comparator capabilities
• Embedded applications needing robust serial communication protocols

Procurement Notes

Verify component status prior to procurement as this specific part number may be subject to discontinuation or obsolescence notices. Confirm package type and suffix compatibility with existing board designs. Ensure sourcing channels provide valid traceability documentation. Check for any recent Product Change Notifications that might affect pinout or electrical characteristics. Validate availability through authorized distributors to mitigate counterfeit risks.

Selection Notes

Select this component when a complete mixed-signal solution is required within a single IC. Consider the 32 kB Flash capacity and 2.25 kB RAM against application memory requirements. Evaluate the 10-bit ADC resolution and speed against signal conditioning needs. Verify that the 2.7 V to 5.25 V operating range matches the system power supply. Assess the available I/O count and peripheral set against interface requirements.

Part Context

This microcontroller belongs to the C8051F38x series, which offers varying Flash sizes and package options. The 'B' designation typically indicates specific memory and package configurations within the family. The '-GMR' suffix denotes a tape-and-reel packaging format suitable for automated surface-mount assembly. This series is designed for cost-sensitive applications demanding high integration levels.

Replacement Considerations

Consult official Silicon Labs documentation for direct pin-to-pin replacements within the C8051F38x family. Verify memory size and peripheral availability in alternative candidates. Review datasheets for any changes in electrical specifications or package dimensions before substitution.