C8051T620-GM

Overview

The C8051T620-GM is a full-speed USB EPROM microcontroller from Silicon Labs, featuring an 8051 core with up to 48 MIPS throughput at 48 MHz. It integrates 64 kB of byte-programmable EPROM and up to 3328 bytes of internal data RAM. The device includes a USB 2.0 function controller with eight flexible endpoints and 1 kB of buffer memory. Analog peripherals consist of a 10-bit ADC supporting up to 500 ksps and two comparators. Digital interfaces include two enhanced UARTs, hardware-enhanced SPI, and SMBus. It operates on a supply voltage of 1.8 to 5.25 V and is available in QFN-28, QFN-32, or LQFP-32 packages.

Feature Summary

• Integrates a high-speed pipelined 8051 microcontroller core capable of up to 48 MIPS throughput.
• Includes a USB 2.0 compliant full-speed function controller with integrated transceiver and clock recovery.
• Features a 10-bit analog-to-digital converter with up to 500 ksps sampling rate and multiple input channels.
• Provides comprehensive digital communication interfaces including dual enhanced UARTs, SPI, and SMBus.

Applications

• Embedded USB connectivity solutions
• Industrial control systems requiring analog signal processing
• Data acquisition modules with high-speed sampling requirements

Procurement Notes

Verify the specific package variant (QFN-28, QFN-32, or LQFP-32) required for your design, as the base part number covers multiple form factors. Confirm that the EPROM programming infrastructure aligns with your production workflow, as this device supports in-application programming. Ensure compatibility with the C2 debug interface for development and flashing. Check for any obsolescence notices, as this family may be marked as not recommended for new designs.

Selection Notes

Select this component when a complete single-chip USB solution is needed without external transceivers or oscillators. It is suitable for applications demanding moderate processing power alongside precise analog measurement capabilities. Consider the available I/O count and memory size relative to firmware complexity. Evaluate the operating temperature range and supply voltage requirements against the target environment constraints.

Part Context

This device belongs to the C8051T62x/32x family of full-speed USB microcontrollers. It shares architectural similarities with other members like the C8051T621, differing primarily in memory configuration and pinout availability. The family utilizes the CIP-51 core and standard Silicon Labs peripheral set. Development typically involves Silicon Labs' IDE and debugging tools compatible with the C2 interface.

Replacement Considerations

Direct substitutes within the same family include the C8051T621, C8051T626, and C8051T627, which offer variations in memory size or package options. Cross-family replacements such as the C8051F34x series provide similar USB functionality but may differ in analog peripheral counts or package types. Verify pin compatibility and software register mapping before transitioning to alternative parts.