C8051F385-GMR

Overview

The C8051F385-GMR is an 8-bit microcontroller from the Silicon Labs C8051F38x family, featuring a high-speed 8051 core operating at up to 48 MIPS. It integrates 64 kB of in-system programmable Flash memory and 4352 bytes of RAM. The device includes a full-speed USB 2.0 function controller with an integrated transceiver and clock recovery. Digital peripherals consist of two UARTs, two SMBus/I2C interfaces, one SPI, six 16-bit timers, and a 16-bit PCA with five capture/compare modules. It provides up to 40 digital I/O pins, all 5 V tolerant, and operates within a supply voltage range of 2.7 V to 5.25 V across a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a full-speed USB 2.0 function controller with an on-chip transceiver and clock recovery, eliminating the need for external components.
• Features a high-performance pipelined 8051 CPU capable of executing up to 48 MIPS with expanded interrupt handling capabilities.
• Includes comprehensive analog peripherals such as a 10-bit ADC with multiplexer, internal voltage reference, comparators, and a temperature sensor.
• Supports flexible clock source selection between internal oscillators and external crystals or RC circuits with on-the-fly switching.

Applications

• Embedded USB connectivity solutions requiring host or device side implementation
• Industrial control systems utilizing serial communication protocols
• Sensor interface applications leveraging onboard analog-to-digital conversion
• Motor control implementations using timer and PWM generation features

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number against official Silicon Labs documentation. Confirm package type and suffix designations match project requirements. Check for obsolescence notices or product change notifications prior to procurement. Ensure environmental compliance certifications align with target market regulations.

Selection Notes

Select this component when a complete single-chip USB solution is required without external transceivers. Consider the specific pin count and peripheral availability relative to the C8051F38x variant hierarchy. Evaluate power consumption profiles against the 2.7 V to 5.25 V operating range. Assess memory requirements against the 64 kB Flash and 4352 bytes RAM capacity.

Part Context

This microcontroller belongs to the C8051F38x series, which are fully integrated mixed-signal system-on-chip devices. The series emphasizes ease of development through on-chip debug circuitry and extensive peripheral integration. It targets applications demanding robust USB connectivity alongside standard microcontroller functions in a compact form factor.

Replacement Considerations

Consult the C8051F38x datasheet compatibility section for hardware incompatibilities with preceding models like the C8051F32x/F34x. Verify pinout and register mapping differences before substituting other variants within the same family.