C8051F930-GMR

Overview

The C8051F930-G-GMR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a high-speed CIP-51 core operating at up to 25 MHz. It integrates 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM. The device supports a supply voltage range of 0.9 V to 3.6 V, utilizing a built-in DC-DC converter for single-cell operation. Key peripherals include a 10-bit SAR ADC with 23 external inputs, two comparators, four general-purpose 16-bit timers, and multiple serial interfaces including SMBus, SPI, and UART.

Feature Summary

• Ultra-low power architecture with sleep currents as low as 50 nA when brownout detectors are enabled.
• Integrated on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Flexible clocking system supporting internal oscillators, external crystals, and a dedicated SmaRTClock real-time clock module.
• High-performance analog subsystem featuring a 10-bit ADC with auto-averaging accumulator and programmable current reference.

Applications

• Single or dual battery powered devices requiring extended operational life
• Home automation and security monitoring systems
• Remote control and garage door openers
• Smart metering and building HVAC control units

Procurement Notes

Verify the specific suffix GMR corresponds to the tape and reel packaging configuration required for automated assembly processes. Confirm that the 32-QFN package dimensions align with your PCB footprint design rules. Ensure compatibility with the intended development toolchain, such as Keil C51 or SDCC, for proper header file integration and compiler support.

Selection Notes

Select this component when a balance of high throughput and minimal power consumption is critical. The integrated DC-DC converter allows operation from a single lithium cell, simplifying power supply design. The extensive analog peripheral set makes it suitable for sensor-heavy applications, while the robust digital interface suite supports complex communication protocols in constrained environments.

Part Context

This part belongs to the C8051F9xx family of mixed-signal microcontrollers designed for low-power embedded applications. It shares architectural similarities with the C8051F92x variant but offers double the Flash capacity. The series is characterized by its fully static operation and comprehensive on-chip resources, reducing the need for external support components in typical designs.

Replacement Considerations

C8051F930-G: Standard tube packaging version of the same silicon.

FAQ

How does the C8051F930 handle voltage regulation for low-voltage operation?

It features a built-in DC-DC converter that enables operation down to 0.9 V in one-cell mode, alongside a built-in LDO regulator for separating analog and digital supply voltages.

What is the maximum sampling rate of the onboard ADC?

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