EtronTech
EM636327
Figure 21. Burst Read and Single Write Operation
(Burst Length=4, CAS# Latency=2)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
tCK2
High
CKE
CS#
RAS#
CAS#
WE#
DSF
BS
A 9
RAx
CAw
CAz
RAx
CAx
CAx
CAy
A0~A8
DQM0
DQM1~3
DQ0 - DQ7
Hi-Z
Ax0 Ax1 Ax2 Ax3
Ax0 Ax1 Ax2 Ax3
Ay3
Az0
Ay0 Ay1
Ay0
DQw0
DQw0
Hi-Z
DQx0
DQ8 - DQ31
Ay2 Ay3
Az0
Lower Byte
is masked
Lower Byte
is masked
Lower Byte
is masked
Activate
Command
Bank A
Read
Command
Bank A
Single Write Single Write
Command Command
Read
Command
Bank A
Single Write
Command
Bank A
Bank A
Bank A
Preliminary
1998
70
December