C8051F966-B-GMR

Overview

The C8051F966-B-GMR is an 8-bit microcontroller from Silicon Labs, part of the C8051F9xx series. It features a CIP-51 8051 core operating at up to 25 MHz. The device integrates 32 KB of Flash memory and 8 KB of RAM. Key peripherals include a DC-DC buck converter, LCD driver, AES encryption engine, and multiple communication interfaces such as SPI, I2C, and UART. It is housed in an 80-pin TQFP package.

Feature Summary

• Integrates a hardware-accelerated AES encryption engine for secure data processing.
• Includes an on-chip DC-DC buck converter to improve power efficiency.
• Features a dedicated LCD driver interface for display applications.
• Utilizes a programmable digital crossbar for flexible I/O mapping.

Applications

• Secure smart metering systems
• LCD-based industrial control panels
• Battery-powered devices requiring efficient power management

Procurement Notes

Verify the specific suffix 'GMR' indicates tape-and-reel packaging when sourcing. Confirm the 'B' grade designation matches required temperature or performance specifications. Check current lifecycle status as this component may be subject to discontinuation notices. Ensure compatibility with existing PCB footprints for the 80-TQFP package.

Selection Notes

Select this model for applications demanding integrated security features alongside power management. The inclusion of a DC-DC converter reduces external component count compared to linear regulator designs. Consider the 80-pin form factor if extensive I/O and LCD driving capabilities are necessary within a single chip solution.

Part Context

This component belongs to the C8051F9xx family of high-performance 8-bit MCUs. These devices are designed for complex embedded applications requiring mixed-signal capabilities, security, and low-power operation. The family shares architectural similarities but varies in memory size and peripheral sets.

Replacement Considerations

Public confirmed substitute: C8051F966-B-GQ (Tube packaging variant). Verify pinout and electrical characteristics match before substitution.