C8051F334-GMR

Overview

The C8051F334-GMR is a mixed-signal ISP Flash microcontroller from Silicon Labs, part of the C8051F33x family. It features an 8-bit CIP-51 core with up to 25 MIPS throughput at 25 MHz. The device includes 2 kB of in-system programmable Flash memory and 768 bytes of internal data RAM. Key analog peripherals include a 10-bit ADC supporting up to 200 ksps with up to 16 external inputs and a built-in temperature sensor. Digital interfaces comprise a hardware-enhanced UART, SMBus, and enhanced SPI. It operates on a supply voltage of 2.7 V to 3.6 V within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrated 10-bit ADC with multiple input channels and a built-in temperature sensor for precise analog signal acquisition.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Programmable digital crossbar architecture allowing flexible configuration of peripheral pins and I/O ports.
• High-speed pipelined 8051 core executing most instructions in one or two system clock cycles.

Applications

• Data acquisition systems requiring analog-to-digital conversion
• Industrial control applications with serial communication needs
• Portable instruments utilizing low-power operation modes

Procurement Notes

Verify component status as this specific model is marked Not Recommended for New Designs (NRND). Confirm package type matches the QFN-20 footprint. Ensure design reviews account for end-of-life implications if planning long-term production runs. Check datasheet revisions for any electrical characteristic updates prior to final implementation.

Selection Notes

Select this MCU when a compact 20-pin solution is required with integrated analog capabilities. The C8051F334 variant specifically offers 2 kB Flash, suitable for smaller firmware footprints compared to the 8 kB variants. Consider the 25 MHz maximum clock speed and 2.7 V to 3.6 V operating range against power and performance requirements. Evaluate the available GPIO count and peripheral set against interface demands.

Part Context

This component belongs to the C8051F33x series of mixed-signal microcontrollers by Silicon Labs. These devices are designed as complete system-on-a-chip solutions, integrating high-speed processing, analog peripherals, and digital I/O into a single package. The series emphasizes ease of development through on-chip debugging and in-system programming capabilities.

Replacement Considerations

Public confirmed substitute part numbers: C8051F330-GMR, C8051F331-GMR, C8051F332-GMR, C8051F333-GMR, C8051F335-GMR.

FAQ

Does the C8051F334-GMR include a digital-to-analog converter?

No, the C8051F334 does not include a DAC. Only the C8051F330 variant in this family integrates a 10-bit current output DAC.

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

The 10-bit ADC supports a maximum sampling rate of up to 200 ksps.