W972GG6JB-18-TR Datasheet, PDF (80/87 Pages) Winbond – 16M 8 BANKS 16 BIT DDR2 SDRAM

W972GG6JB
11.21 Burst write operation followed by precharge: WL = (RL-1) = 4
T0
T1
T2
T3
T4
T5
T6
T7
T9
CLK/CLK
CMD
Posted CAS
WRITE A
NOP
NOP
DQS,
DQS
DQ's
WL = 4
NOP
NOP
NOP
NOP
NOP
Completion of the Burst Write
≥ tWR
Precharge A
DIN A0 DIN A1 DIN A2 DIN A3
11.22 Burst read operation with Auto-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
READA
A10 = 1
NOP
NOP
AL + BL/2 clks
NOP
DQS,
DQS
DQ's
AL = 1
CL = 3
RL = 4
first 4-bit prefetch
second 4-bit prefetch
NOP
NOP
NOP
≥ tRP
NOP
Bank A
Activate
Dout Dout Dout Dout Dout Dout Dout Dout
A0 A1 A2 A3 A4 A5 A6 A7
≥ tRTP
tRTP
Precharge begins here
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Publication Release Date: Jul. 28, 2014
Revision: A03