
中级工程师
  
- 积分
- 3780
- 在线时间
- 16 小时
- 精华
- 0
- 注册时间
- 2017-2-10
- 最后登录
- 2019-2-23
|
Datasheet是这样写的:
A pull-up should be placed on WE to hold it inactive during power-up. This
pull-up is effective only if the WE signal is tristate during
power-up. Many MPUs tristate their controls on power-up. This
should be verified when using the pull-up. When the nvSRAM
comes out of power-on-RECALL, the MPU must be active or the
WE held inactive until the MPU comes out of reset.
就是说为了确保上电的时候WE不起作用。当nvSRAM power-on-RECALL时,直到MPU复位后WE才有效。 |
|