EM638165 Etron Technology Inc., EM638165 Datasheet - Page 40

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

Figure 12.1. Random Row Write (Interleaving Banks)
Preliminary
A0~A9,A11
BA0,1
RAS#
CAS#
DQM
CKE
CS#
WE#
CLK
A10
DQ
High
Hi-Z
Command
Activate
Bank A
RAx
RAx
t
T0
RCD
DAx0
(Burst Length=8, CAS# Latency=1)
Command
Bank A
Write
CAx
T 1 T2
t
CK1
DAx1 DAx2 D Ax3
T3
T4
DAx4 DAx5 DAx6 DAx7 DBx0 DBx1
T5
T6
T7
Command
Activate
Bank B
RBx
RBx
T8
Command
CBx
Bank B
Write
T9
40
T10 T 11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
DBx2 DBx3 DBx4 DBx5 DBx6
Precharge
Command
Bank A
t
Command
RP
Activate
Bank A
RAy
RAy
DBx7
t
Precharge
Command
WR
Bank B
Rev 0.6
EM638165
Command
Bank A
CAy
Write
DAy0 DAy1 DAy2
Feb. 2001
DAy3