C8051T623-GM

Overview

The C8051T623-GM is a high-speed 8-bit microcontroller featuring a pipelined 8051 core with up to 48 MIPS throughput at a 48 MHz clock. It integrates a USB 2.0 full-speed controller with an on-chip transceiver and clock recovery, eliminating external components. The device includes 16 kB of byte-programmable EPROM code memory and 1280 bytes of internal data RAM. Digital peripherals consist of hardware-enhanced SPI, SMBus, two UARTs, four 16-bit timers, and a 16-bit Programmable Counter Array. It operates within a supply voltage range of 1.8 V to 5.25 V and supports temperatures from –40 °C to +85 °C.

Feature Summary

• Integrated USB 2.0 full-speed controller with built-in transceiver and clock recovery for simplified connectivity
• High-performance pipelined 8051 core delivering up to 48 MIPS throughput
• On-chip debug circuitry enabling non-intrusive in-system debugging without external probes
• Flexible clocking architecture with switchable internal oscillators and support for external crystal or RC sources

Applications

• Embedded USB host and device applications
• Industrial control systems requiring robust serial communication
• Battery-powered devices utilizing low-power clock modes
• Automotive electronics compatible with wide voltage ranges

Procurement Notes

Verify the specific package variant against the datasheet ordering information, as suffixes denote physical dimensions. Confirm that the EPROM type matches project requirements rather than Flash or OTP alternatives. Ensure development tools support the C2 interface for programming and debugging. Check current manufacturing status as legacy silicon families may have limited availability.

Selection Notes

Select this component when a dedicated USB interface is required alongside standard serial protocols. The integrated transceiver reduces bill-of-materials complexity compared to discrete solutions. Evaluate the 16 kB memory capacity against application firmware size constraints. Consider the QFN-24 package footprint if space optimization is critical for the design.

Part Context

This part belongs to the C8051T62x/32x family of USB-enabled microcontrollers from Silicon Labs. It shares architectural similarities with the C8051T622 but differs in memory configuration and pinout specifics. The family targets applications needing reliable USB connectivity without complex external circuitry. It represents a mature 8-bit solution bridging legacy 8051 compatibility with modern peripheral integration.

Replacement Considerations

Consult the manufacturer's official documentation for direct cross-references. Verify pin-to-pin compatibility if substituting within the same series. Ensure the replacement maintains USB 2.0 compliance and identical memory sizes.