EM638165 Etron Technology Inc., EM638165 Datasheet - Page 45

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

Figure 13.3. Read and Write Cycle
Preliminary
A0~A9,A11
BA0,1
RAS#
CAS#
DQM
CKE
CS#
WE#
CLK
A10
DQ
Hi-Z
T0
Command
Activate
Bank A
RAx
RAx
T 1 T2
t
CK3
T3
Command
Bank A
Read
CAx
T4
T5
T6
Ax0
T7
(Burst Length=4, CAS# Latency=3)
Ax1
T8
Ax2 Ax3
T9
45
T10 T 11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
Command
Bank A
DAy0 DAy1
Write
CAy
is Masked with a
The Write Data
Zero Clock
Latency
DAy3
Command
CAz
Bank A
Read
Rev 0.6
EM638165
Az0
is Masked with a
The Read Data
Az1
Two Clock
Latency
Feb. 2001
Az3