C8051T630-GMR

Overview

The C8051T630-GMR is an 8-bit microcontroller from Silicon Labs, based on the 8051 core architecture. It features a maximum clock frequency of 25 MHz and includes 8 kB of OTP EPROM program memory alongside 768 bytes of data RAM. The device operates within a supply voltage range of 1.8 V to 3.6 V and supports an operating temperature range from -40°C to +85°C. Key peripherals include a 10-bit ADC with 16 channels, four timers/counters, and communication interfaces such as SMBus, SPI, and UART. It is housed in a QFN-20 package.

Feature Summary

• Integrates a high-speed 8051-compatible processor core capable of operation up to 25 MHz for efficient instruction execution.
• Includes a 10-bit analog-to-digital converter with multiple input channels for precise signal acquisition.
• Supports standard serial communication protocols including SMBus, SPI, and UART for system connectivity.
• Features integrated low-frequency oscillator (LFO) capabilities for power-efficient timing operations.

Applications

• Battery-powered sensor nodes requiring low-voltage operation
• Industrial control systems utilizing serial communication interfaces
• Consumer electronics devices with limited pin count requirements

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices, as this specific variant may have limited availability. Ensure that the QFN-20 package specifications match your PCB footprint design requirements before finalizing procurement decisions.

Selection Notes

Select this component when a compact 8-bit MCU with integrated ADC and serial interfaces is required. Consider the 1.8 V minimum supply voltage for battery applications. Evaluate the 8 kB OTP memory constraint against application code size needs. Compare pin counts and peripheral sets against alternative models in the C8051T series if additional I/O or memory is necessary.

Part Context

This part belongs to the Silicon Labs C8051T series, which focuses on mixed-signal microcontrollers with integrated analog peripherals. The T-series typically utilizes OTP EPROM for cost-effective programming solutions compared to Flash-based variants. It shares architectural similarities with other 8051 cores but offers specific integration levels suited for embedded control tasks.

Replacement Considerations

Check for C8051T630-GM as a potential tube-packaged alternative. Verify functional equivalence regarding memory type and package dimensions. Consult official substitution lists for any newer revisions within the C8051T family that maintain pin compatibility.