Serial data transmission unit

摘要

A serial data transmission unit which can freely set a holding interval T of the final bit of transmitted data. It includes a holding interval decision portion for determining the holding interval T in accordance with a predetermined integer multiple of the period of a bus clock signal. It can solve a problem of a conventional system in that the dividing value of the bus clock set in a controller must undergo a wide range adjustment in accordance with one of external slaves which requires the longest holding interval when the holding intervals of data differ among the external slaves.