C8051T626-B-GMR

Overview

The C8051T626-B-GMR is a high-speed 8-bit microcontroller from Silicon Labs, featuring a CIP-51 core with up to 48 MIPS throughput at a 48 MHz clock. It integrates 64 kB of byte-programmable EPROM and up to 3328 bytes of internal data RAM. The device includes a full-speed USB 2.0 function controller with an integrated transceiver and 1 kB buffer memory. Analog peripherals consist of a 10-bit ADC supporting up to 500 ksps with 21 external inputs, two comparators, and a built-in temperature sensor. Operating voltage ranges from 1.8 V to 5.25 V, with an on-chip LDO for the core supply.

Feature Summary

• Integrates a high-speed pipelined CIP-51 microcontroller core capable of executing most instructions in one or two system clocks.
• Features a full-speed USB 2.0 compliant function controller with integrated clock recovery and transceiver, eliminating external components.
• Includes a 10-bit successive approximation register (SAR) analog-to-digital converter with programmable window detector and multiple input channels.
• Provides flexible digital peripherals including enhanced SPI, SMBus, dual UARTs, four 16-bit timers, and a programmable counter array.

Applications

• USB-enabled embedded systems requiring direct connectivity without external transceivers
• Industrial control applications utilizing analog signal acquisition via the high-speed ADC
• Data logging devices leveraging the byte-programmable EPROM for non-volatile storage
• Communication interfaces using integrated UART, SPI, and SMBus protocols

Procurement Notes

Verify the specific suffix '-B-GMR' against the manufacturer's current ordering guide to confirm package type, tape-and-reel configuration, and lead-free status. Confirm that the 'Not Recommended for New Designs' designation does not impact immediate procurement needs or long-term availability commitments. Ensure compatibility with existing PCB footprints for QFN-28 or QFN-32 packages.

Selection Notes

Select this component when a complete USB solution is required without external passive components. The C8051T626 variant specifically offers 64 kB of EPROM, suitable for larger firmware requirements compared to lower-capacity derivatives. Consider the 1.8 V to 5.25 V operating range for flexibility in power supply design. Evaluate the 10-bit ADC resolution and speed against application signal processing needs.

Part Context

This part belongs to the C8051T62x/7 family of mixed-signal microcontrollers designed for USB applications. It shares architectural similarities with the C8051F series but distinguishes itself through the integration of EPROM rather than Flash memory. The family supports in-system programming and on-chip debug capabilities via the C2 interface, facilitating development and field updates.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's obsolescence notices for recommended alternatives if this component is no longer supported for new designs.