C8051F902-GU

Overview

The C8051F902-GU is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a high-speed 8051-compatible core with pipelined architecture. It operates within a supply voltage range of 0.9 V to 3.6 V and supports frequencies up to 25 MHz. The device integrates 8 kB of in-system programmable Flash memory and 768 bytes of RAM. Key peripherals include a 12-bit SAR ADC with burst mode, two comparators, a hardware SMBus, two SPI interfaces, and a UART. It utilizes a 24-pin QSOP package.

Feature Summary

• Ultra-low power operation with integrated DC-DC converter for single-cell battery applications
• High-performance 8051 core executing 70% of instructions in one or two system clocks
• Integrated 12-bit analog-to-digital converter with programmable throughput and auto-averaging accumulator
• On-chip debug circuitry enabling full-speed non-intrusive in-system debugging

Applications

• Battery-powered portable devices requiring extended operational life
• Industrial control systems utilizing low-voltage logic
• Data acquisition systems employing precision analog sensing
• Embedded controllers needing simultaneous serial communication interfaces

Procurement Notes

Verify the specific suffix 'GU' corresponds to the 24-pin QSOP package variant when sourcing components. Confirm that the 8 kB Flash configuration matches the design requirements, as other variants in this family may offer different memory sizes. Ensure compatibility with existing development tools supporting the C2 interface for programming and debugging.

Selection Notes

Select this component for designs prioritizing low active current consumption and fast wake-up times from sleep modes. The integrated DC-DC converter allows efficient operation across wide input voltage ranges. Consider the available digital peripherals and ADC resolution against application signal processing needs before finalizing the part number choice.

Part Context

This device belongs to the C8051F91x-C8051F90x family of mixed-signal microcontrollers. These parts are distinguished by their ability to operate at very low voltages while maintaining high performance. The family shares common architectural features but varies in memory size and peripheral configurations to suit diverse embedded control applications.

Replacement Considerations

C8051F912-GU