C8051T620-GMR

Overview

The C8051T620-GMR is an 8-bit microcontroller from Silicon Labs, part of the Full Speed USB EPROM MCU family. It features a high-speed 8051 core operating at up to 48 MHz with pipelined architecture for up to 48 MIPS throughput. The device includes up to 64 kB of byte-programmable EPROM code memory and up to 3328 bytes of internal data RAM. Key peripherals include a USB 2.0 function controller supporting full speed (12 Mbps) or low speed (1.5 Mbps), a 10-bit ADC with up to 500 ksps sampling rate, two comparators, four general-purpose 16-bit timers, and a 16-bit Programmable Counter Array. It operates on a supply voltage range of 1.8 V to 5.25 V and supports QFN-28, QFN-32, and LQFP-32 packages.

Feature Summary

• Integrates a USB 2.0 compliant full-speed function controller with integrated transceiver and clock recovery, eliminating the need for external components.
• Includes a 10-bit analog-to-digital converter capable of up to 500 ksps sampling with multiple input channels and built-in temperature sensing.
• Features a high-performance 8051 core with pipelined instruction execution and extensive digital peripherals including dual UARTs, SPI, and SMBus.
• Supports in-application programming of EPROM memory and provides non-intrusive on-chip debug capabilities via the C2 interface.

Applications

• Embedded USB connectivity solutions requiring host or device communication
• Data acquisition systems utilizing high-speed analog-to-digital conversion
• Industrial control applications needing robust serial communication interfaces
• Battery-powered devices leveraging low-frequency oscillator power management modes

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package type availability as options include QFN-28, QFN-32, and LQFP-32. Check current production status notices, as this family may be marked Not Recommended for New Designs. Ensure environmental compliance documentation matches project requirements. Validate specific ordering suffixes against official datasheets for exact pinout and memory configurations.

Selection Notes

Select this model when USB connectivity and analog signal processing are required within a single chip. Consider the 64 kB EPROM limit for firmware size constraints. Evaluate the 1.8 V to 5.25 V supply range against system power architecture. Compare peripheral counts against alternative models if more I/O or different memory types are needed. Review package dimensions for PCB layout compatibility before finalizing selection.

Part Context

This component belongs to the C8051T6xx series of 8-bit microcontrollers designed by Silicon Labs. It shares architectural similarities with other members like the C8051T621, differing primarily in memory size and peripheral availability. The series emphasizes integration of USB functionality with standard 8051 capabilities. It represents a legacy solution within the company's broader portfolio, often superseded by newer EFM8 or C8051F families for new designs.

Replacement Considerations

Public confirmed substitute part numbers: C8051T621-GM, C8051T626-GM, C8051T627-GM. Verify pin compatibility and memory differences before substitution. Note that these alternatives may also carry 'Not Recommended for New Designs' status. Consult official cross-reference guides for detailed feature mapping.