C8051F930-GM

Overview

The C8051F930-GM is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, housed in a 32-pin QFN (5x5 mm) package. It features a high-speed CIP-51 core operating at up to 25 MHz with 25 MIPS throughput. The device includes 64 kB of Flash memory and 4352 bytes of internal data RAM. Key peripherals include a 10-bit ADC with 23 inputs, two comparators, and a built-in temperature sensor. Communication interfaces consist of SMBus, dual SPI, and UART. It supports a supply voltage range of 0.9 V to 3.6 V.

Feature Summary

• Ultra-low power operation with integrated DC-DC converter for single-cell battery applications
• High-performance 8051-compatible core with pipelined architecture for efficient instruction execution
• Integrated analog subsystem featuring a 10-bit SAR ADC with programmable gain amplifier and burst mode
• Comprehensive digital connectivity including hardware SMBus, dual SPI, and UART ports

Applications

• Single or dual battery powered devices requiring low standby current
• Home automation and security systems utilizing capacitive touch sensing
• Remote control units and garage door openers
• Smart metering and building HVAC control systems
• Fire and security monitoring equipment

Procurement Notes

Verify the specific suffix 'GM' corresponds to the 32-pin QFN package variant when ordering. Confirm that the application design accommodates the 0.9 V to 3.6 V supply range, particularly if utilizing the one-cell mode with the internal DC-DC converter. Ensure compatibility with the required operating temperature range of -40°C to +85°C for the intended environment.

Selection Notes

Select this component for designs prioritizing low power consumption alongside robust analog capabilities. The inclusion of a 10-bit ADC with auto-averaging and a programmable current reference makes it suitable for precision sensing tasks. Consider the 24-port I/O availability and 5 V tolerance for direct interfacing with legacy logic without additional level shifting components.

Part Context

This part belongs to the C8051F9xx family of mixed-signal system-on-chip microcontrollers. It shares architectural similarities with the C8051F92x but offers increased Flash capacity. The device integrates a complete on-chip debug interface, eliminating the need for external emulators during development. It is designed to replace discrete MCU and peripheral solutions in compact embedded applications.

Replacement Considerations

C8051F930-G-QR: Same functional specifications but packaged in a 32-pin QFN (4x4 mm).

FAQ

Does the C8051F930 support operation below 1.8 V?

Yes, the device supports one-cell mode operation down to 0.9 V using the built-in DC-DC converter.

What is the maximum sampling rate of the ADC?

The 10-bit SAR ADC supports a programmable throughput of up to 300 ksps.