EM639165_07 Datasheet, PDF (32/73 Pages) Etron Technology, Inc. – 8Mega x 16 Synchronous DRAM (SDRAM)

EtronTech
EM639165
Figure 8. Power Down Mode and Clock Mask (Burst Length=4, CAS# Latency=2)
CLK
CKE
CS#
T0 T 1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T 11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
tCK2
tIS
Valid
tPDE
RAS#
CAS#
WE #
BA0,1
A10
RAx
A0~A9,A11
RAx
CAx
DQM
Hi-Z
DQ
Activate
Command
Bank A
ACTIVE
STANDBY
Read
Command
Bank A
Power Down
Mode Entry
Power Down
Mode Exit
Ax0 Ax1
Clock Mask
Start
tHZ
Ax2
Ax3
Clock Mask
End
Precharge
Command
Bank A
PRECHARGE
STANDBY
Power Down
Mode Entry
Power Down
Mode Exit
Any
Command
32
Rev 1.6 Feb. 2007