Datasheet

DESWRITE DES DES DES DES DES DES DES DES DES DES
T0 T1 Ta0 Ta1 Ta2 Ta3 Ta4 Ta5 Ta6 Ta7
Tb0 Tb1
CK#
CK
Tc0
DES
Din
b
Din
b+1
Din
b+2
Din
b+3
Din
b+4
Din
b+5
Din
b+6
Din
b+7
t
WR
t
IS
WL = AL + CWL
DON'T CARETRANSITIONING DATA
CKE
t
CPDED
VALID
Bank,
Col n
VALID
DQ BL8
Din
b
Din
b+1
Din
b+2
Din
b+3
DQ BC4
t
WRPDEN
Power - Down Entry
TIME BREAK
Td0 Td1
DES VALID
A10
t
PD
DQS, DQS#
ADDR
CMD
Figure 31. Power-Down Entry After Write
CK#
T1 Ta0 Ta1 Tb0 Tb1 Tc0T0
CK
CKE
DES DES
DES DES DES VALID
t
IS
t
IS
t
IH
VALID
VALID
t
CKE
t
CPDED
Enter
Power-Down Mode
Exit
Power-Down Mode
CMD
DON'T CARETIME BREAK
t
PD
t
XP
Tc1
Figure 32. Precharge Power-Down Entry and Exit
AS4C256M16D4
Confidential
- 50 of 201 -
Rev.1.0 Aug.2019