W981216AH Datasheet, PDF (32/44 Pages) Winbond – 2M x 16 bit x 4 Banks SDRAM

W981216AH
2M x 16 bit x 4 Banks SDRAM
PowerDown Mode
(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
Active Standby
Power Down mode
Precharge
NOP Active
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.
Revision 1.0
- 32 -
Publication Release Date: March, 1999