Datasheet

AS4C32M16D1A-C&I
45 Rev. 1.0 Mar. /2015
Figure 28. Power-Down
CK
CK
CKE
VALID
COMMAND
Don’t Care
T0 T1 T2 T3
T4
Tn Tn+1 Tn+2
Tn+3 Tn+4
VALID
Tn+5 Tn+6
NOP
NOP
No column access
in progress
Enter power-down
mode
Exit power-down
mode
t
IS
t
IS
Figure 29. Clock Frequency Change in Precharge
CK
CK
CMD
t
IS
T0 T1 T2 T4 Tx Tx+1 Ty
Ty+1
Ty+2
Ty+3 Ty+4
Tz
NOP NOP
NOP
DLL
RESET
NOP Valid
NOP
Frequency Change
Occurs here
Stable new clock
Before power down
exit
t
RP
Minmum 2 clocks
Required before
Changing frequency
200 Clocks
CKE