C8051F963-A-GMR

Overview

The C8051F963-A-GMR is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a CIP-51 core operating at up to 25 MHz. It integrates 64 KB of Flash memory and 4.25 KB of RAM within a 32-QFN (5x5 mm) package. The device supports a supply voltage range of 0.9 V to 3.6 V and includes 23 channels of 10-bit ADCs. Connectivity options include SMBus, SPI, and UART/USART interfaces, with 24 general-purpose I/O pins available.

Feature Summary

• Integrates a high-performance CIP-51 8051-compatible core with internal oscillator support for efficient code execution.
• Provides extensive analog capabilities through multiple 10-bit analog-to-digital converter channels for signal acquisition.
• Features flexible digital I/O mapping via a programmable crossbar, allowing configurable peripheral-to-pin assignment.
• Includes integrated system monitoring peripherals such as power-on reset, brown-out detection, and watchdog timer.

Applications

• Battery-powered sensor nodes requiring low-voltage operation
• Industrial control systems utilizing serial communication protocols
• Portable medical devices needing precise analog signal processing
• Consumer electronics with compact form factor constraints

Procurement Notes

Verify the complete part number including the suffix '-A-GMR' to ensure correct temperature grade and tape-and-reel packaging configuration. Confirm that the intended application environment falls within the specified -40°C to +85°C operating range. Check for any recent Product Change Notices regarding assembly or labeling updates to ensure compliance with current manufacturing standards before finalizing procurement orders.

Selection Notes

Select this component when a balance of moderate program storage and significant analog input channels is required in a small footprint. The wide supply voltage range makes it suitable for single-cell battery applications. Ensure the design utilizes the available 24 I/O pins effectively, considering the shared nature of the digital crossbar resources for simultaneous peripheral usage.

Part Context

This device belongs to the C8051F9xx family of mixed-signal microcontrollers, which are designed for cost-sensitive applications demanding high integration. The C8051F963 variant specifically offers 64 KB of Flash, distinguishing it from lower-memory counterparts like the F92x series while providing more analog inputs than the F93x series. It shares the same physical package and core architecture as other members of the F93x/F96x group.

Replacement Considerations

Direct pin-compatible substitutes within the same package may include other C8051F9xx variants with different memory sizes, such as the C8051F930, provided the memory and peripheral requirements align. Verify software compatibility when migrating between variants with differing Flash capacities or specific peripheral counts.