C8051F340-GQR

Overview

The C8051F340-GQR is an 8-bit microcontroller from the Silicon Labs C8051F34x family, housed in a 48-pin TQFP package. It features a high-speed CIP-51 core operating at up to 48 MIPS with a maximum clock frequency of 48 MHz. The device integrates 64 kB of Flash memory and 4.25 kB of RAM. Key peripherals include a USB 2.0 full-speed function controller with integrated transceiver and clock recovery, a 10-bit ADC supporting up to 200 ksps, two comparators, and multiple digital interfaces such as UART, SPI, and SMBus. It operates within a voltage range of 2.7 V to 5.25 V and supports temperatures from -40 °C to +85 °C.

Feature Summary

• Integrates a USB 2.0 full-speed function controller with an on-chip transceiver and clock recovery circuit, eliminating the need for external crystals or resistors.
• Features a pipelined CIP-51 8051-compatible core that executes most instructions in one or two system clocks for enhanced processing speed.
• Includes a 10-bit analog-to-digital converter with a built-in multiplexer, temperature sensor, and programmable window detector.
• Provides non-invasive on-chip debug capabilities allowing for breakpoints and single-stepping without external emulation hardware.

Applications

• Embedded USB connectivity devices requiring full-speed data transfer
• Data acquisition systems utilizing the onboard ADC and temperature sensor
• Industrial control applications needing robust digital communication interfaces

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'GQR' corresponds to the tape-and-reel packaging variant. Check for current lifecycle status, as documentation indicates this family may be not recommended for new designs. Ensure environmental compliance matches project requirements.

Selection Notes

Select this component when a complete single-chip USB solution is required without external passive components. Consider the 48 MHz processing speed and 64 kB memory capacity against application complexity. Evaluate the 10-bit ADC resolution and channel count for signal conditioning needs. Verify that the 48-pin TQFP package fits the physical constraints of the target PCB design.

Part Context

This part belongs to the C8051F34x series of mixed-signal microcontrollers designed by Silicon Laboratories. The series emphasizes high integration by combining USB functionality with standard 8051 processing cores and analog peripherals. The C8051F340 variant specifically offers the larger 64 kB Flash configuration compared to other members in the family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Silicon Labs resources for current family alternatives or next-generation replacements.