Datasheet

Figure 36 — Self Refresh Entry and Exit
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 precharge 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 t
CKE. 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 t
XP 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
AS4C32M16MD1A-5BCN
Confidential
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Rev.1.2 July 2016