C8051F912-GU

Overview

The C8051F912-GU is a single-chip MCU featuring an 8051 core with up to 25 MIPS throughput at 25 MHz. It includes 16 kB of in-system programmable Flash and 768 bytes of RAM. The device integrates a 12-bit SAR ADC with 75 ksps throughput, two comparators, and a SmaRTClock real-time clock. Operating from 0.9 V to 3.6 V, it supports ultra-low power modes including 10 nA sleep with memory retention. Key peripherals include four timers, SMBus, two SPIs, UART, and a CRC unit.

Feature Summary

• Ultra-low power architecture supporting operation down to 0.9 V with built-in DC-DC converter for one-cell battery applications
• High-speed pipelined 8051 core delivering up to 25 MIPS with on-chip debug capabilities
• Integrated 12-bit analog-to-digital converter with auto-averaging accumulator and programmable window detector
• Comprehensive digital peripheral set including hardware SMBus, dual SPI, UART, and multiple timer arrays

Applications

• Single or dual cell battery-powered portable devices
• Low-power industrial sensor nodes
• Battery management systems requiring precise voltage monitoring
• Real-time clock applications using SmaRTClock oscillator

Procurement Notes

Verify the complete part number matches the required package and temperature grade. Confirm that the specific suffix corresponds to the intended manufacturing revision. Ensure compatibility with existing design constraints regarding supply voltage ranges and pinout configurations before finalizing procurement orders.

Selection Notes

Select this component when high precision analog conversion is required alongside low power consumption. The 12-bit ADC resolution suits applications needing accurate signal processing. Consider the integrated DC-DC converter for extending battery life in single-cell designs. Evaluate the available digital interfaces against system communication requirements.

Part Context

This device belongs to the C8051F91x family of mixed-signal microcontrollers. It shares architectural similarities with the C8051F90x series but offers enhanced memory and ADC resolution. The family targets cost-sensitive, power-constrained embedded applications requiring robust analog performance and standard digital connectivity options within a compact footprint.

Replacement Considerations

Check for C8051F911-GU if 8 kB Flash is sufficient. Verify C8051F902-GU for lower memory variants. Ensure package compatibility when substituting with other QFN or QSOP packages in the same family.