Hysteretic fuse control circuit with serial interface fusing

摘要

A fuse status detection and serial interface programming circuit which provides a current-free method of detecting a fused/non-fused state of a fuse, and which also prevents filament regrowth. The circuit employs an output inverter to monitor the status of the fuse, and switching transistors to initially blow the fuse, and automatically reblow the fuse if filament regrowth appears.