Description: K9F1208U0M 的ALE、CLE分别由DSP 的A1 和A0 控制。DSP的低8位数据线直接与闪存的I/O0-I/O7 相连，实现命令、地址和数据的传输； DSP的通用I/O口IOA2 接R/B，监测存储器的工作状态，当R/ B 处于低电平时,表示有编程、擦除或随机读操作正在进行；操作完成后, R/ B 会自动返回高电平。DSP的W E 、R D 分别接FLASH的W E 、R E ， 控制读、写操作。CS2接闪存的片选线CE。-K9F1208U0M the ALE, CLE by the DSP-A1 and A0 control. DSP s low-8 data lines directly connected with the memory of I/O0-I/O7 to achieve order, address and data transmission DSP Universal I/O port IOA2 then R/B, monitoring the work of the state of memory, when R/B at a low level indicates that there are programming, erase or random read operation is ongoing to operate after the completion, R/B will automatically return to high level. DSP-WE, RD, respectively, then FLASH the WE, RE, control of reading and writing operations. CS2 access memory chip line selection CE. Platform: |
Size: 2048 |
Author:卢昌荣 |
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