五、实验原理与说明 软件执行: 1、BF531异步读操作时序 read num=DECODE REG; SETUP PROGRAMMED READ ACCESS EXTENDED HOLD 2 CYCLES ACCESS 4 CYCLES 3 CYCLES 1 CYCLE CLKOUT tpo AMSx ABE1-0 ADDR19-1 ARE AOE tpo tHo ARE CHARDY tsARDY tHARDY 4 ARDY tSARDY DATA 15-0五、 实验原理与说明 1、BF531异步读操作时序 ARE 软件执行: read_num=DECODE_REG;