C8051F333-GM

Overview

The C8051F333-GM is a mixed-signal ISP Flash microcontroller from Silicon Labs, featuring a high-speed 8051 core with up to 25 MIPS throughput at a 25 MHz clock. It includes 4 kB of in-system programmable Flash memory and 768 bytes of internal data RAM (256 + 512). The device integrates a voltage comparator, enhanced UART, SMBus, SPI, four 16-bit timers, and a Programmable Counter Array. It operates on a supply voltage of 2.7 to 3.6 V and supports a temperature range of –40 to +85 °C.

Feature Summary

• Integrated on-chip debug circuitry for full-speed, non-intrusive in-system debugging without external emulators.
• High-speed pipelined 8051 architecture executing 70% of instructions in one or two system clocks.
• Flexible digital peripherals including hardware-enhanced serial ports and a priority crossbar decoder.

Applications

• In-system programming and firmware updates via flash sectors.
• Embedded control systems requiring low-power operation modes.
• Serial communication interfaces using UART, SMBus, or SPI.

Procurement Notes

Verify the specific suffix 'GM' corresponds to the QFN-20 package variant. Confirm that the component status is acceptable for your design lifecycle, as this series may be marked Not Recommended for New Designs. Ensure the operating voltage range of 2.7V to 3.6V matches your power supply constraints before procurement.

Selection Notes

Select this model if a compact 20-pin QFN footprint is required alongside standard 8051 compatibility. It is suitable for applications needing integrated analog comparators and multiple serial interfaces without external components. Consider the 4 kB Flash limit for code size requirements compared to other variants in the F33x family.

Part Context

This component belongs to the C8051F33x family of mixed-signal microcontrollers. These devices are designed as complete system-on-a-chip solutions, integrating analog peripherals, digital I/O, and memory. The family shares a common pinout and instruction set, facilitating migration between different memory configurations within the same package type.

Replacement Considerations

The C8051F330, C8051F331, C8051F332, C8051F334, and C8051F335 are pin-compatible members of the same family. Substitution requires verifying Flash memory size and peripheral availability differences.