C8051F320R

Overview

The C8051F320R is an 8-bit mixed-signal System-on-Chip microcontroller from Silicon Labs, featuring a high-speed CIP-51 core operating at up to 25 MHz with 25 MIPS throughput. It integrates 16 KB of in-system programmable Flash memory and 2304 bytes of internal RAM. The device includes a full-speed USB 2.0 function controller with an integrated transceiver and clock recovery, eliminating the need for external components. Peripheral resources consist of a 10-bit ADC supporting up to 200 ksps, two comparators, four 16-bit timers, a Programmable Counter Array (PCA), and multiple serial interfaces including UART, SPI, and SMBus.

Feature Summary

• Integrated Full-Speed USB 2.0 Controller
• High-Speed Pipelined 8051 Core
• On-Chip Debug Circuitry
• Mixed-Signal Analog Peripherals

Applications

• USB-enabled data acquisition systems
• Industrial control devices
• Portable instrumentation
• Sensor interface modules

Procurement Notes

Verify component status as the C8051F320R may be listed as obsolete or discontinued by the manufacturer. Confirm RoHS compliance status, as specific variants may not meet current environmental regulations. Ensure compatibility with existing design tools and development kits before finalizing procurement plans.

Selection Notes

Select this model for applications requiring direct USB connectivity without external PHYs. The CIP-51 architecture offers significantly higher instruction throughput compared to standard 8051 cores. Consider the 32-pin LQFP package constraints and verify that the 16 KB Flash capacity meets program storage requirements.

Part Context

This component belongs to the C8051F32x/34x family of USB microcontrollers designed for embedded connectivity. These devices provide a single-chip solution for implementing industry-standard USB connections. The series combines digital processing capabilities with analog signal conditioning features on a unified silicon die.

Replacement Considerations

Consult official documentation for confirmed substitute part numbers within the same product family.