Datasheet

Figure 52. Read with autoprecharge to power-down entry
CK#
CMD
BL=4
T0 T2 Tx Tx+1 Tx+2 Tx+3 Tx+4 Tx+5 Tx+6 Tx+7T1 Tx+8 Tx+9
RDA
Q
AL+CL
DQS
CKE
CK
DQS#
CKE should be kept HIGH until the end of burst operation
t
IS
Q Q Q
DQ
CK#
CMD
BL=8
T0 T2 Tx Tx+1 Tx+2 Tx+3 Tx+4 Tx+5 Tx+6 Tx+7T1 Tx+8 Tx+9
RD
Q
AL+CL
DQS
CKE
CK
DQS#
CKE should be kept HIGH until the end of burst operation
t
IS
Q Q Q
DQ
Q Q Q Q
PRE
AL+BL/2 with t
RTP
= 7.5ns
& t
RAS
min satisfied
PRE
Start internal precharge
AL+BL/2 with t
RTP
= 7.5ns
& t
RAS
min satisfied
Figure 53. Write to power-down entry
CK#
CMD
BL=4
T0 Tm Tm+1 Tm+2 Tm+3 Tx Tx+1 Tx+2 Ty Ty+1T1 Ty+2 Ty+3
WR
Q
WL
DQS
CKE
CK
DQS#
t
IS
Q Q Q
DQ
CK#
CMD
BL=8
T0 Tm Tm+1 Tm+2 Tm+3 Tm+4 Tm+5 Tx Tx+1 Tx+2T1 Tx+3 Tx+4
WR
Q
WL
DQS
CKE
CK
DQS#
Q Q Q
DQ
Q Q Q Q
t
WTR
t
IS
t
WTR
AS4C64M16D2A-25BIN
AS4C64M16D2A-25BCN
Confidential
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Rev.1.1 October 2017