C8051F38C-GM

Overview

The Silicon Labs C8051F38C-GM is a mixed-signal microcontroller featuring an 8051 core with up to 48 MIPS performance. It integrates 16 kB of in-system programmable Flash memory and 2.304 kB of RAM. The device includes a full-speed USB 2.0 controller, a 10-bit ADC supporting up to 500 ksps with 21 channels, two comparators, and six general-purpose timers. Operating within a voltage range of 2.7 V to 5.25 V, it utilizes a 32-pin QFN package measuring 5x5 mm.

Feature Summary

• Integrates a high-speed pipelined 8051 core capable of executing most instructions in one or two system clocks for efficient processing.
• Includes a full-speed USB 2.0 function controller with integrated transceiver and clock recovery, eliminating the need for external components.
• Features a 10-bit analog-to-digital converter with a built-in multiplexer supporting single-ended and differential modes at speeds up to 500 ksps.
• Provides on-chip debug circuitry that enables non-intrusive in-system debugging without requiring external emulation hardware.

Applications

• Motor control systems
• Sensor interface circuits
• Automotive parking assistance modules

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package dimensions match the 5x5 mm QFN-32 outline. Ensure the ordering suffix corresponds to the required temperature grade and packaging format. Cross-reference part numbers with authorized distributors to avoid counterfeit inventory.

Selection Notes

Select this component when a compact form factor is required alongside integrated USB connectivity and high-speed data acquisition. The 10-bit ADC resolution and speed suit applications needing precise analog signal monitoring. Verify that the 16 kB Flash capacity meets firmware storage requirements before finalizing the design choice.

Part Context

This device belongs to the C8051F38x family of highly integrated mixed-signal microcontrollers from Silicon Labs. The series combines standard 8051 architecture with extensive peripheral sets, including USB controllers and precision analog blocks. These devices are designed to reduce system component count and simplify board layouts for industrial and automotive designs.

Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the same family. Verify that any substitute maintains identical Flash size, RAM capacity, and peripheral configurations to ensure software compatibility.