W9864G6DB Datasheet, PDF (32/48 Pages) Winbond – 1M x 4 BANKS x 16 BITS SDRAM

W9864G6DB
Operating Timing Example, continued
Auto Precharge Read (Burst Length = 4, CAS Latency = 3)
(CLK = 100 MHz)
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23
CLK
CS
tRC
RAS
tRAS
tRP
tRAS
CAS
WE
BS0
BS1
A10
tRCD
RAa
tRCD
RAb
A0-A9
RAa
DQM
CKE
DQ
CAw
RAb
tAC
aw0 aw1 aw2 aw3
CAx
tAC
bx0
bx1
bx2 bx3
Bank #0 Active
Read
AP*
Active
Read
AP*
Bank #1
Bank #2
Idle
Bank #3
* AP is the internal precharge start timing
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