C8051F34A-GMR

Overview

The C8051F34A-GMR is a fully integrated mixed-signal System-on-Chip microcontroller from Silicon Labs, belonging to the C8051F34x family. It features a high-speed pipelined 8051-compatible core operating at up to 48 MIPS with a maximum clock frequency of 48 MHz. The device includes 64 kB of in-system programmable Flash memory and 4352 Bytes of RAM. Key peripherals include a full-speed USB 2.0 function controller with an integrated transceiver and clock recovery, a 10-bit ADC with up to 200 ksps sampling rate, two analog comparators, and multiple digital communication interfaces such as UARTs, SPI, and SMBus. It operates within a voltage range of 2.7 V to 5.25 V and supports industrial temperatures from -40 °C to +85 °C.

Feature Summary

• Integrates a high-performance 8051-compatible CPU with pipelined architecture for efficient instruction execution.
• Features a complete USB 2.0 function controller with built-in transceiver and clock recovery, eliminating external components.
• Includes on-chip debug circuitry enabling non-intrusive in-system debugging without requiring external emulators.
• Provides flexible peripheral mapping through a programmable digital crossbar decoder for versatile I/O configuration.

Applications

• PC peripherals
• Point-of-sale (POS) terminals
• Medical diagnostic equipment
• Embedded modems

Procurement Notes

Verify the specific suffix GMR indicates reel packaging when sourcing. Confirm the component status as Not Recommended for New Designs (NRND) against current project requirements. Ensure compatibility with existing firmware architectures given the legacy designation. Check for RoHS compliance documentation if required by regional regulations. Validate supply chain availability due to potential end-of-life considerations associated with NRND status.

Selection Notes

Select this MCU for applications requiring robust USB connectivity combined with mixed-signal processing capabilities. The integrated USB transceiver and clock recovery simplify hardware design by reducing external component count. Consider the 48 MIPS throughput for tasks demanding real-time response. Evaluate the 10-bit ADC resolution and speed for sensor interface needs. Assess the 64 kB Flash capacity against application code size requirements.

Part Context

The C8051F34A-GMR is part of the C8051F34x series, which expands Silicon Labs' portfolio of USB-enabled microcontrollers. This family targets cost-sensitive and high-end applications needing high-performance analog processing alongside CPU power. The C8051F34A variant specifically offers 64 kB Flash and 4352 Bytes RAM in a 32-pin LQFP or QFN package. It shares architectural similarities with other members like the C8051F340 but differs in memory size and package options.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the C8051F34x family is marked Not Recommended for New Designs, consult Silicon Labs for recommended future designs or equivalent legacy replacements.