Hello Ivor, Ivor Bowden schrieb: > ... > > If anyone knows where I can get a data sheet for the W127H clock chip, > or has any more ideas how to turn off this "feature" please let me know. > The chip should be from IC Works, now owned by Cypress. Try http://www.cypress.com/pub/datasheets/w127a.pdf It's no H-type, but perhaps it doesn't matter in this particular case. Greetings Norbert Pieth.