EM636165_06 Datasheet, PDF (58/75 Pages) Etron Technology, Inc. – 1Mega x 16 Synchronous DRAM (SDRAM)

EtronTech
1M x 16 SDRAM
EM636165
Figure 17.1. Auto Precharge after Write Burst (Burst Length=4, CAS# Latency=1)
T0 T 1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T 11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CL K
tCK1
CKE ^High
CS#
RAS#
CAS#
WE #
A11
A10
RAx
RBx
A0~A9
RAx CAx
RBx
CBx
RBy
CAy
RBy
CBy
RAz
RAz CAz
DQ M
DQ ^Hi-Z
DAx0 DAx1 DAx2 DAx3 _{DBx0 DBx1 DBx2 DBx3} DAy0 _{DAy1 DAy2} DAy3 DBy0 DBy1 DBy2 DBy3
DAz0 DAz0 DAz0 DAz0
Activate
Command
Bank A
W rite
Command
Bank A
Activate Writewith
Command Auto Precharge
Bank B Command
Bank B
Activate Writewith
Command Auto Precharge
Bank B Command
W rite with
Bank B
Auto Precharge
Command
Bank A
Activate
Command
Bank A
W rite with
Auto Precharge
Command
Bank A
Preliminary
58
Rev. 2.7 Mar. 2006