AS4LC8M8S0
AS4LC4M16S0
®
Power down mode waveform
CLK
CS
RAS
CAS
WE
BA0/ BA1
A10
RA
RA
a
a
A0–A9,A11
DQM
RA
CA
RA
CA
x
a
a
a
CKE
DQ
Active standby
Precharge standby
Power down mode
Bank activate
NOP
Power down mode exit
NOP
Bank activate
Power down mode
Power down mode entry
Power down mode entry
Power down mode exit
Enter power down mode by pulling CKE low.
All input/ output buffers (except CKE buffer are turned off in power down mode.
When CKE goes high, command input must be equal to no operation at next CLK rising edge.
Read/ write waveform
(BL = 8, CL = 3)
CLK
t
t
RP
RAS
CS
RAS
CAS
WE
BA0/ BA1
t
RP
A10
A0-A9,A11
DQM
RA
RA
b
a
RA
CA
CA
RA
b
a
b
a
CKE
t
RP
DQ
Aa
Q
Aa
Q
Aa
Aa
Aa
Aa
5
Ab
D
Ab
D
Ab
D
Ab
Ab
Ab
5
0
1
2
3
4
0
1
2
3
4
D
D
D
Q
Q
Q
Q
Bank activate
Bank activate
Read
Precharge
Write
7/ 5/ 00
ALLIANCE SEMICONDUCTOR
19
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
