C8051T633-GM

Overview

The C8051T633-GM is an 8-bit microcontroller from Silicon Labs, featuring the 8051 core architecture. It operates at a maximum clock frequency of 25 MHz and includes 4 kB of OTP EPROM program memory alongside 768 bytes of data RAM. The device provides 17 I/O pins within a QFN-20 package. It supports SMBus, SPI, and UART interfaces and contains four timers/counters. Operating voltage ranges from 1.8 V to 3.6 V, with a functional temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-performance 8051-compatible core with on-chip analog and digital peripherals for system-level integration.
• Features one-time programmable (OTP) flash memory for cost-effective code storage in volume applications.
• Includes multiple communication interfaces such as SPI, UART, and SMBus for versatile connectivity options.

Applications

• Industrial control systems requiring robust 8-bit processing
• Consumer electronics utilizing low-power microcontrollers
• Sensor interface modules using serial communication protocols

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot codes and date codes against current production status. Check for RoHS compliance documentation. Ensure packaging integrity matches specified tube quantities. Validate pinout compatibility with existing PCB footprints before procurement.

Selection Notes

Select this model when OTP memory suffices for firmware updates and cost efficiency is prioritized over reprogrammability. Consider the limited 768-byte RAM for complex algorithm implementation. Evaluate the 17 available I/O lines against peripheral requirements. Ensure the 25 MHz speed meets real-time processing constraints.

Part Context

This component belongs to the C8051T series of mixed-signal microcontrollers. These devices combine a standard 8051 core with extensive on-chip peripherals. The T-series typically utilizes OTP technology, distinguishing it from the F-series which employs Flash memory. This specific part targets applications needing moderate performance with minimal external components.

Replacement Considerations

Public confirmed substitute part numbers are not available in verified sources. Consult official Silicon Labs documentation for cross-references within the C8051T family.