C8051F380-GQR

Overview

The C8051F380-GQR is an 8-bit microcontroller from the Silicon Labs C8051F38x family, housed in a 48-TQFP (7x7 mm) package. It features a high-speed 8051 core operating at up to 48 MIPS with pipelined architecture. The device integrates 64 kB of in-system programmable Flash memory and 4.25 kB of RAM. Key peripherals include a USB 2.0 full-speed controller with integrated transceiver, a 10-bit ADC supporting up to 500 ksps with 32 channels, two comparators, and multiple digital interfaces such as SPI, I2C/SMBus, and UARTs. It operates on a supply voltage of 2.7 V to 5.25 V within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a USB 2.0 compliant full-speed controller with an internal transceiver and clock recovery, eliminating the need for external crystals or resistors.
• Features a high-performance 8051 core with pipelined instruction execution achieving up to 48 MIPS throughput.
• Includes a 10-bit analog-to-digital converter with up to 500 ksps sampling rate, built-in multiplexer, and temperature sensor.
• Provides extensive connectivity via hardware-enhanced SPI, dual I2C/SMBus ports, dual enhanced UARTs, and an external memory interface.

Applications

• Motor control systems
• Sensor interface modules
• Parking assistance units
• Seat position and adjustment controllers
• Fluid level monitoring devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific revision status, as this part is marked Not Recommended for New Designs. Check for relevant Product Change Notices regarding packaging or assembly updates. Ensure compatibility with existing firmware and hardware designs before procurement.

Selection Notes

Select this component for applications requiring integrated USB connectivity without external passive components. Consider the 48-pin TQFP package constraints and 40 available I/O pins. Evaluate the 10-bit ADC resolution and channel count against signal requirements. Verify that the 2.7 V to 5.25 V supply range aligns with system power architecture.

Part Context

This device belongs to the C8051F38x series of mixed-signal microcontrollers. It shares architectural similarities with the C8051F34x family but offers enhanced USB capabilities and specific peripheral configurations tailored for industrial and automotive environments. The GQR suffix denotes the 48-pin TQFP package variant.

Replacement Considerations

Silicon Labs recommends EFM8BB31F64G-QFN32 as a replacement for this end-of-life part.

FAQ

Does the C8051F380-GQR require an external crystal for USB operation?

No, the device includes an integrated clock recovery circuit that allows full-speed or low-speed USB operation without an external crystal.

What is the maximum sampling rate of the ADC on this MCU?

The 10-bit ADC supports a maximum sampling rate of up to 500 ksps.