W631GG6KB-15 Datasheet, PDF (54/158 Pages) Winbond – Double Data Rate architecture: two data transfers per clock cycle

W631GG6KB
CK#
CK
Command
Address
T0
T1
T2
NOP
READ
Bank a,
Col n
NOP
T10
NOP
BL4 Operation:
DQS, DQS#
DQ
BL8 Operation:
DQS, DQS#
DQ
AL = CL - 2 = 9
T11
T16
T18
T19
T20
NOP
tRTP
PRE
Bank a,
(or all)
RL = 20
NOP
CL = 11
NOP
tRP
NOP
T21
T22
T23
T24
T25
NOP
NOP
NOP
NOP
NOP
Dout
n
Dout
n+1
Dout
n+2
Dout
n+3
Dout
n
Dout
n+1
Dout
n+2
Dout
n+3
Dout
n+4
Dout
n+5
Dout
n+6
Dout
n+7
T26
NOP
T27
ACT
Bank a,
Row b
NOTES: 1. RL = 20 (CL = 11, AL = CL - 2)
2. Dout n = data-out from column n.
3. NOP commands are shown for ease of illustration; other commands may be valid at these times.
4. The example assumes tRAS.MIN is satisfied at Precharge command time (T16) and that tRC.MIN is satisfied at the next Active command time (T27).
TIME BREAK
TRANSITIONING DATA
DON'T CARE
Figure 39 – READ to PRECHARGE (RL = 20, AL = CL-2, CL = 11, tRTP = 6, tRP = 11)
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Publication Release Date: Feb. 27, 2013
Revision A04