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read mode ( reading data from splc780a1 to mpu ) limit characteristics symbol min. typ. max. unit test condition e cycle time t c 1000 - - ns pin e e pulse width t w 450 - - ns pin e e rise/fall time t r , t f - - 25 ns pin e address setup time t sp1 60 - - ns pins: rs, r/w,e address hold time t hd1 20 - - ns pins: rs, r/w,e data o utput delay t i m e t d - - 360 ns pin s : db7 - 0 data hold ti m e t hd2 5 - - n s p i n d b 7 - 0 read mode timing diagram ( reading data from splc780a1 to mpu ) rs r / w e db7 - 0 v ih1 v il1 v ih1 v il1 t sp1 t c valid data v ih1 v il1 v ih1 v il1 v ih1 v il1 v ih1 v il1 t hd1 t hd1 t f t pw t hd2 t r v il1 v ih1 v ih1 t d
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