W9864G6DB Datasheet, PDF (37/48 Pages) Winbond – 1M x 4 BANKS x 16 BITS SDRAM

Operating Timing Example, continued
Power Down Mode
W9864G6DB
(CLK = 100 MHz)
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
BS
A10
RAa
RAa
A0-A9
RAa
CAa
RAa
CAx
DQM
CKE
DQ
tSB
tCKS
tCKS
tSB
tCKS
ax0 ax1
ax2
ax3
tCKS
Active
NOP
Read
Active Standby
Power Down mode
Precharge
NOPActive
Precharge Standby
Power Down mode
Note: The PowerDown Mode is entered by asserting CKE "low".
All Input/Output buffers (except CKE buffers) are turned off in the PowerDown mode.
When CKE goes high, command input must be No operation at next CLK rising edge.
- 37 -
Publication Release Date: January 27, 2003
Revision A1