W9725G6KB25I-TR Datasheet, PDF (77/87 Pages) Winbond – 4M X 4 BANKS X 16 BIT DDR2 SDRAM

W9725G6KB
11.15 Burst read operation followed by precharge: RL=4 (AL=1, CL=3, BL=4,
tRTP ≤ 2clks)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CLK/CLK
CMD
Post CAS
READ A
NOP
NOP
AL+BL/2 clks
Precharge
DQS,
DQS
DQ's
AL = 1
CL = 3
RL = 4
≥ tRAS
≥ tRTP
NOP
NOP
≥ tRP
NOP
Dout Dout Dout Dout
A0 A1 A2 A3
Bank A
Activate
NOP
11.16 Burst read operation followed by precharge: RL=4 (AL=1, CL=3, BL=8,
tRTP ≤ 2clks)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CLK/CLK
CMD
Post CAS
READ A
NOP
NOP
AL + BL/2 clks
NOP
DQS,
DQS
DQ's
AL = 1
CL = 3
RL = 4
NOP
Precharge
NOP
NOP
NOP
Dout Dout Dout Dout Dout Dout Dout Dout
A0 A1 A2 A3 A4 A5 A6 A7
first 4-bit prefetch
second 4-bit prefetch
≥ tRTP
- 77 -
Publication Release Date: Sep. 03, 2012
Revision A03