C8051F320-GQR

Overview

The C8051F320-GQR is an 8-bit microcontroller from the Silicon Labs C8051F32x family, housed in a 32-LQFP package. It features a high-speed 8051 core operating at up to 25 MHz with 16 kB of ISP Flash and 2304 bytes of internal RAM. The device integrates a full-speed USB 2.0 function controller with an on-chip transceiver and clock recovery circuit. Analog peripherals include a 10-bit ADC supporting up to 200 ksps conversion rates and two comparators. Digital interfaces encompass SPI, UART, and SMBus, alongside four general-purpose timers.

Feature Summary

• Integrates a full-speed USB 2.0 function controller with an on-chip transceiver and clock recovery circuit, eliminating the need for external components.
• Features a high-speed pipelined 8051 core capable of executing 70% of instructions in one or two system clocks.
• Includes a 10-bit analog-to-digital converter (ADC) with a maximum sampling rate of 200 ksps and multiple input channels.
• Provides on-chip debug circuitry for non-intrusive in-system debugging without requiring external emulation hardware.

Applications

• Embedded USB connectivity solutions
• Structural health monitoring sensor nodes
• Optical signal attenuation control systems

Procurement Notes

Verify component authenticity through authorized distributors as the part is marked Not Recommended for New Designs. Confirm RoHS compliance status and check for specific package labeling updates via official Product Change Notices (PCN). Ensure compatibility with existing design infrastructure before procurement due to end-of-life status.

Selection Notes

Select this MCU for applications requiring integrated USB functionality without external PHYs. The 25 MIPS throughput suits moderate processing loads. Verify that the 32-pin LQFP package fits the mechanical constraints. Consider the 5V tolerant I/O for direct interfacing with legacy logic levels. Evaluate the 16 kB Flash capacity against application code size requirements.

Part Context

This component belongs to the C8051F32x mixed-signal ISP FLASH Microcontroller family. It shares architectural similarities with the C8051F321, which utilizes a 28-pin QFN package. Both devices offer identical core performance and peripheral sets, differing primarily in pin count and physical footprint. The family emphasizes single-chip integration for USB-based embedded systems.

Replacement Considerations

Public confirmed substitute part numbers: None available.