Datasheet

AS4C16M32MD1
Confidential 43 Rev. 1.0/July 2014
7.12 Power Down
Power-down is entered when CKE is registered Low (no accesses can be in progress). If power-down occurs
when all banks are idle, this mode is referred to as pre-charge power-down; if power-down occurs when
there is a row active in any bank, this mode is referred to as active power-down.
Entering power-down deactivates the input and output buffers, excluding CK, CK and CKE. In power-down
mode, CKE Low must be maintained, and all other input signals are “Don’t Care”. The minimum power-down
duration is specified by tCKE. However, power-down duration is limited by the refresh requirements of the
device.
The power-down state is synchronously exited when CKE is registered High (along with a NOP or DESELECT
command). A valid command may be applied tXP after exit from power-down.
Figure 37 shows Power-down entry and exit.
For Clock Stop during Power-Down mode, please refer to the Clock Stop subsection in this specification