C8051F901-D-GMR

Overview

The C8051F901-D-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 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 and includes a 10-bit SAR ADC with up to 15 external inputs. Digital peripherals include hardware SMBus, two SPI ports, and a UART. It operates within a temperature range of -40 °C to +85 °C and is housed in a 24-pin QFN package.

Feature Summary

• Ultra-low power operation with sleep modes as low as 10 nA and fast wake-up times
• Integrated DC-DC converter enabling single-cell battery operation down to 0.9 V
• High-speed pipelined CIP-51 core delivering up to 25 MIPS throughput
• On-chip debug circuitry supporting full-speed non-intrusive in-system debugging

Applications

• Single or dual battery powered portable devices
• Low power sensor nodes requiring extended battery life
• Battery-operated instrumentation and measurement tools
• Wearable electronics and health monitoring devices

Procurement Notes

Verify the specific suffix 'D' indicates the 24-pin QFN package variant when sourcing. Confirm that the 'GMR' suffix corresponds to tape and reel packaging if required for automated assembly. Check current lifecycle status as this component may be subject to obsolescence notices. Ensure compatibility with existing board layouts regarding the 24-QFN footprint dimensions.

Selection Notes

Select this model for applications requiring minimal active current consumption while maintaining 8051 compatibility. The integrated DC-DC converter makes it suitable for single-cell lithium battery systems where voltage regulation is critical. Consider the 10-bit ADC resolution and available I/O count against system interface requirements. Evaluate the on-chip debug capabilities to streamline development cycles without external emulators.

Part Context

This part belongs to the C8051F9xx family of mixed-signal microcontrollers designed for ultra-low power applications. The series shares the CIP-51 core architecture but varies in Flash size and peripheral configurations. The F901 variant specifically offers 8 kB of Flash, distinguishing it from the 16 kB F91x counterparts. It targets cost-sensitive, battery-operated markets needing robust analog performance.

Replacement Considerations

Public confirmed substitute part numbers: C8051F901-D-GM (tube packaging equivalent).

FAQ

Does the C8051F901 support operation from a single lithium cell?

Yes, the device supports one-cell mode operation from 0.9 V to 1.8 V using its built-in DC-DC converter.

What is the maximum ADC throughput for the 10-bit mode?

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