Datasheet

Figure 18.1. Posted CAS# operation: AL=2
Read followed by a write to the same bank
CK#
CMD
AL=2
-1 1 2 3 4 5 6 7 8 90 10 11 12
Active
A-Bank
Read
A-Bank
Write
A-Bank
CL=3
WL=RL-1=4
Dout 0
Dout 1 Dout 2
Dout 3
Din 0
Din 1
Din 2
Din 3
RL=AL+CL=5
>=t
RCD
[ AL=2 and CL=3, RL= (AL+CL)=5, WL= (RL-1)=4, BL=4]
DQS
DQ
CK
DQS#
Figure 18.2. Posted CAS# operation: AL=0
Read followed by a write to the same bank
CK#
CMD
AL=0
-1 1 2 3 4 5 6 7 8 90 10 11 12
Active
A-Bank
Read
A-Bank
Write
A-Bank
CL=3
WL=RL-1=2
Dout 0
Dout 1
Dout 2 Dout 3
Din 0
Din 1
Din 2 Din 3
RL=AL+CL=3
>=t
RCD
[ AL=0 and CL=3, RL= (AL+CL)=3, WL= (RL-1)=2, BL=4]
DQS
DQ
CK
DQS#
AS4C32M16D2A-25BIN
Alliance Memory Inc.
511 Taylor Way, San Carlos, CA 94070 TEL: [phone] FAX: [phone]
Alliance Memory Inc. reserves the right to change products or specification without notice
Rev.1.2
40
Jun./2014