W9725G6JB Datasheet, PDF (77/87 Pages) Winbond – 4M  4 BANKS  16 BIT DDR2 SDRAM

W9725G6JB
10.15 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
10.16 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
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Publication Release Date: Nov. 29, 2011
Revision A02