W989D6DB Datasheet, PDF (53/64 Pages) Winbond – Standard Self Refresh Mode

11.14 Power Down Mode
W989D6DB / W989D2DB
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23
CLK
CS
RAS
CAS
WE
BA
A10
RAa
RAa
Address
RAa
CAa
RAa
CAx
DQM
CKE
DQ
tSB
tCKS
tCKS
tSB
tCKS
ax0 ax1
ax2
ax3
tCKS
Active
DSL
Power Down Power Down
Mode Entry Mode Exit
Precharge
&
Power Down Mode Entry
Active
Device Deselect
Power Down Mode Exit
Note: The PowerDown Mode is entered by asserting CKE "low".
All Input/Output buffers (except CKE buffers) are turned off in the Power Down mode.
When CKE goes high, command input must be No operation at next CLK rising edge.
Violating refresh requirements during power-down may result in a loss of data.
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Publication Release Date: Mar. 19, 2014
Revision: A01-001