DAC1210與8位CPU的接口電路
是DAC1210與8位CPU的接口電路。為了用8位數(shù)據(jù)線D0—D7來(lái)傳送12位被轉(zhuǎn)換數(shù)(DIO
—DI11),CPU需分兩次傳送被轉(zhuǎn)換數(shù)。首先將被轉(zhuǎn)換數(shù)的低4位(DI3~DIO)傳給低j|位輸入寄存器,
再將高8位(DIl1—DI4)傳給8位寄存器,最后將12位輸入寄存器的狀態(tài)傳給12位DAC轉(zhuǎn)蜂舜,并啟
動(dòng)D/A轉(zhuǎn)換.