C8051F342-GMR

Overview

The C8051F342-GMR is a fully integrated mixed-signal System-on-Chip microcontroller from the C8051F34x family. It features a high-speed pipelined 8051-compatible core operating at up to 48 MIPS, paired with 64 kB of in-system programmable Flash memory and 4.352 kB of RAM. The device integrates a full-speed USB 2.0 function controller with an on-chip transceiver and clock recovery, eliminating the need for external components. Analog peripherals include a 10-bit ADC with up to 200 ksps sampling rate, two comparators, and a temperature sensor. It operates within a voltage range of 2.7 V to 5.25 V using an internal regulator and supports industrial temperatures from -40 °C to +85 °C.

Feature Summary

• Integrated full-speed USB 2.0 controller with built-in transceiver and clock recovery for simplified connectivity
• High-performance 8051 core delivering up to 48 MIPS with pipelined architecture
• On-chip analog subsystem featuring a 10-bit ADC, dual comparators, and temperature sensor
• Non-volatile Flash memory allowing in-circuit programming and field upgrades

Applications

• PC peripherals requiring USB connectivity
• Point-of-sale (POS) terminals
• Medical diagnostic equipment
• Embedded modems and VoIP telephones

Procurement Notes

Verify the specific suffix GMR indicates tape and reel packaging when ordering. Confirm the component status as Not Recommended for New Designs to assess long-term supply viability. Ensure the selected package matches the LQFP-32 or QFN-32 footprint requirements for your PCB layout. Cross-reference the datasheet revision to confirm peripheral availability, particularly regarding the ADC and voltage reference configurations.

Selection Notes

Select this model if a 64 kB Flash size and 4.352 kB RAM configuration are required. The C8051F342 specifically utilizes the 32-pin LQFP or 32-pin QFN packages. Verify that the 48 MIPS core speed meets processing demands. Ensure the design accommodates the 2.7 V to 5.25 V input range, utilizing the internal regulator if voltages exceed 3.6 V. Check pinout compatibility against the C8051F34x block diagram for port I/O allocation.

Part Context

The C8051F342 belongs to the C8051F34x series of full-speed USB flash MCUs by Silicon Labs. This family provides a single-chip solution for embedded USB applications by combining a fast 8051 CPU with extensive analog and digital peripherals. The series differentiates models primarily through memory sizes, package types, and specific peripheral combinations, such as the presence of a second UART or specific ADC channels.

Replacement Considerations

Public confirmed substitute part numbers: C8051F340, C8051F341, C8051F343, C8051F344, C8051F345, C8051F346, C8051F347, C8051F348, C8051F349, C8051F34A, C8051F34B, C8051F34C, C8051F34D.