C8051F920-F-GMR

Overview

The C8051F920-F-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 includes 32 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 one-cell mode operation. Key peripherals include a 10-bit ADC with 23 external inputs, two comparators, hardware SMBus, dual SPI ports, and a UART. It is housed in a 32-pin QFN package.

Feature Summary

• Integrated 10-bit SAR ADC with auto-averaging accumulator and burst mode for enhanced resolution
• Built-in DC-DC converter enabling low-voltage single-cell battery operation
• Hardware SmaRTClock oscillator supporting real-time clock functions with minimal power consumption
• On-chip debug circuitry facilitating full-speed non-intrusive in-system debugging

Applications

• Single or dual battery powered portable devices
• Low-power sensor monitoring systems
• Industrial control applications requiring 5 V tolerant I/O
• Battery management systems with voltage reference capabilities

Procurement Notes

Verify the specific suffix 'F' indicates the 32 kB Flash variant distinct from the 64 kB F93x series. Confirm the 'GMR' suffix corresponds to the tape and reel packaging format required for automated assembly. Ensure the operating temperature range meets the application's environmental specifications.

Selection Notes

Select this component when 32 kB of program memory suffices compared to the 64 kB option. Consider the 32-pin QFN package for space-constrained designs. Evaluate the need for the integrated DC-DC converter if operating below 1.8 V. Verify that the 10-bit ADC resolution and throughput meet signal acquisition requirements.

Part Context

This part belongs to the C8051F9xx family of mixed-signal microcontrollers. It shares architectural similarities with the C8051F93x series but differs in Flash capacity. The CIP-51 core provides improved instruction throughput over standard 8051 implementations while maintaining compatibility.

Replacement Considerations

C8051F930-G-GMR offers identical functionality with 64 kB Flash instead of 32 kB.