C8051F330-GM

Overview

The C8051F330-GM is an 8-bit mixed-signal microcontroller from Silicon Labs, featuring a high-speed CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 8 kB of ISP Flash memory and 768 bytes of internal data RAM. The device includes a 10-bit ADC supporting up to 200 ksps with 16 external inputs, a 10-bit current output DAC, and a voltage comparator. Digital peripherals consist of 17 I/O ports, hardware-enhanced UART, SMBus, SPI, four timers, and a programmable counter array. Operating on a 2.7 V to 3.6 V supply, it supports -40°C to +85°C temperatures in a 20-pin QFN package.

Feature Summary

• High-speed pipelined 8051-compatible core delivering up to 25 MIPS.
• Integrated 10-bit analog-to-digital converter with multiple input channels and built-in temperature sensor.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Versatile digital communication interfaces including enhanced UART, SMBus, and SPI.

Applications

• Portable physiological parameter monitoring systems
• Magnetic stripe readers for point-of-sale terminals
• Key card reader applications
• Amplitude modulation radio transmitter designs

Procurement Notes

Verify the component status before procurement as this specific part number is marked Not Recommended for New Designs by the manufacturer. Confirm that existing inventory or legacy stock meets project requirements. Ensure compatibility with alternative components if redesigning for future production runs. Check datasheet revisions for any updates regarding absolute maximum ratings or electrical characteristics prior to finalizing orders.

Selection Notes

Select this MCU for applications requiring integrated analog signal processing alongside standard digital control functions. The inclusion of both ADC and DAC makes it suitable for mixed-signal environments. Consider the 25 MHz performance limit and 8 kB memory capacity against application complexity. Verify that the 2.7 V to 3.6 V operating range aligns with the system power supply design constraints.

Part Context

This component belongs to the C8051F33x family of mixed-signal ISP Flash MCUs produced by Silicon Laboratories. The family shares a common architecture but varies in memory size and peripheral availability. The C8051F330 specifically denotes the variant with 8 kB Flash, 10-bit ADC, and 10-bit DAC. It utilizes the CIP-51 core which maintains binary compatibility with standard 8051 instruction sets while offering improved execution throughput.

Replacement Considerations

Public confirmed substitute part numbers: C8051F330-GDI, C8051F330-GMR.

FAQ

Does the C8051F330 support crystal-less UART operation?

Yes, the device features a programmable internal high-frequency oscillator with ±2% accuracy that supports crystal-less UART operation.

What is the maximum sampling rate of the onboard ADC?

The 10-bit Analog-to-Digital Converter supports conversion rates of up to 200 ksps.