Method for adjusting the frequency of a clock module by means of fuses melted using a laser beam

摘要

Adjustment procedure involves destruction of electric fuses using a laser so that the running of a clock type device is adjusted. The clock comprises an integrated circuit (20) controlled by a quartz crystal with an adjustment circuit (23) allowing a correction factor in terms of a frequency divider (22) to be introduced with destruction of fuses changing the frequency memory elements. After the fuses have been destroyed the integrated circuit has its protective resin applied.