EM638165 Etron Technology Inc., EM638165 Datasheet - Page 50

• Manufacturer Part Number: EM638165
• Description: 4Mega x 16 Synchronous DRAM (SDRAM)
• Manufacturer: Etron Technology Inc.

Figure 15.2. Interleaved Column Write Cycle
Preliminary
A0~A9,A11
WE#
BA0,1
RAS#
CAS#
DQM
CKE
CS#
CLK
A10
DQ
Hi-Z
T0
Command
Activate
Bank A
RAx
RAx
t
CK2
T 1 T2
t
RCD
Command
Bank A
CAx
Write
t
DAx0 DAx1 DAx2 DAx3
RRD
T3
T4
Command
Activate
Bank B
RBw
RBw
T5
T6
Command
Bank B
DBw0 DBw1 DBx0
Write
CBw
T7
Command
T8
Bank B
CBx
Write
T9
50
DBx1
T10 T 11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
Command
DBy0
(Burst Length=4, CAS# Latency=2)
Bank B
Write
CBy
DBy1DAy0
Command
Bank A
CAy
Write
DAy1 DBz0
Command
CBz
Bank B
Write
Precharge
Command
Bank A
DBz1 DBz2 DBz3
t
RP
Rev 0.6
EM638165
t
WR
Precharge
Command
Bank B
t
RP
Feb. 2001