单片机读写62256的程序，硬件连接是单片机的wr脚和rd引脚分别接62256的OE和CS，这两个脚的时序单片机是由硬件自动完成的，P0口作为数据和地址用，用74hc573进行地址锁存，ALE来控制，ALE控制573的时序也是由单片机硬件自动完成的-Microcontroller to read and write 62 256 procedures, the hardware connection is microcontroller rd wr feet and then 62,256, respectively, the OE pin and CS, the timing of these two legs microcontroller is done automatically by the hardware, P0 port as data and addresses, with 74hc573 the address latch, ALE to control, ALE timing control 573 is done automatically by the microcontroller hardware