C8051F330-GMR

Overview

The C8051F330-GMR is an 8-bit mixed-signal microcontroller from Silicon Labs, featuring a high-speed 8051 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. Key analog peripherals include a 10-bit ADC supporting up to 200 ksps with 16 external inputs, a 10-bit current output DAC, and a comparator. The device operates on a supply voltage of 2.7 V to 3.6 V and is housed in a 20-pin QFN package.

Feature Summary

• Integrates a high-speed pipelined 8051 CPU core for efficient instruction execution.
• Includes on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Features a programmable digital crossbar and configurable I/O ports that are 5 V tolerant.
• Supports multiple serial communication protocols including UART, SMBus, and SPI.

Applications

• Point-of-sale terminals
• Key card readers
• Magnetic stripe readers (MSR)
• Embedded systems requiring mixed-signal processing

Procurement Notes

Verify the component status as Not Recommended for New Designs (NRND) before finalizing designs. Confirm the specific ordering suffix matches the required package and temperature range. Ensure compatibility with existing firmware due to potential end-of-life constraints. Check for alternative next-generation replacements if long-term availability is critical.

Selection Notes

Select this model when a compact 20-pin QFN footprint is required alongside integrated analog-to-digital conversion capabilities. The inclusion of a dedicated 10-bit current output DAC distinguishes it from other variants in the family that may lack this peripheral. Consider the 5 V tolerant I/O for interfacing with legacy logic levels without additional level shifting components.

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 configurations. The C8051F330 specifically provides 8 kB of Flash and includes both a 10-bit ADC and a 10-bit DAC, positioning it for applications needing precise analog signal handling within a small form factor.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.