C8051F901-GMR

Overview

The C8051F901-GMR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a high-speed CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 8 kB of in-system programmable Flash memory and 768 bytes of RAM. The device supports a supply voltage range of 0.9 V to 3.6 V, enabling single-cell battery operation via a built-in DC-DC converter. Key peripherals include a 10-bit SAR ADC with auto-averaging accumulator, two comparators, hardware SMBus, dual SPI, and UART interfaces. It is housed in a 24-pin QFN package.

Feature Summary

• Ultra-low power architecture with sleep mode currents as low as 10 nA and fast wake-up times.
• Integrated 10-bit SAR ADC with programmable throughput and on-chip voltage reference.
• Built-in DC-DC converter and LDO regulator for flexible single or dual battery power management.
• High-performance pipelined 8051 core executing 70% of instructions in one or two system clocks.

Applications

• Portable consumer electronics requiring extended battery life
• Smart metering and utility monitoring systems
• Personal medical devices and health monitors
• Sensor interface nodes in energy harvesting applications

Procurement Notes

Verify the specific suffix 'GMR' against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure compatibility with the required programming interface and debug tools. Check for any recent Product Change Notices regarding assembly sites or material composition updates before finalizing procurement.

Selection Notes

Select this component when ultra-low active current consumption and deep sleep modes are critical. The integrated DC-DC converter makes it suitable for single-cell lithium battery applications where voltage regulation is needed. Verify that the 8 kB Flash capacity meets application requirements, as other variants in the F9xx series offer larger memory sizes.

Part Context

This part belongs to the C8051F9xx family of ultra-low power 8-bit MCUs. It shares the same core architecture and peripheral set as the C8051F91x series but differs in program memory size. The GMR suffix typically denotes a tape-and-reel packaging format for surface-mount assembly.

Replacement Considerations

C8051F912-GMR (offers 16 kB Flash)

FAQ

What is the minimum operating voltage for the C8051F901?

The device supports a supply voltage range of 0.9 V to 3.6 V, allowing operation in single-cell mode down to 0.9 V using the internal DC-DC converter.

Does the C8051F901 support capacitive touch sensing?

Yes, the device supports up to 15 capacitive touch sense inputs through its analog peripherals and comparators.