W9864G6DB Datasheet, PDF (30/48 Pages) Winbond – 1M x 4 BANKS x 16 BITS SDRAM

W9864G6DB
Operating Timing Example, continued
Page Mode Read (Burst Length = 4, CAS Latency = 3)
CLK
CS
RAS
01234
(CLK = 100 MHz)
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
tCCD
tRAS
tCCD
tCCD
tRAS
CAS
WE
BS0
BS1
tRCD
A10 ^RAa
tRCD
RBb
A0-A9 ^RAa
DQM
CKE
DQ
CAI RBb
CBx
CAy
CAm
CBz
tAC
tAC
tAC
tAC
tAC
a0 a1 a2 a3 bx0 bx1 Ay0 Ay1 Ay2 am0 am1 am2 bz0 bz1 bz2 bz3
tRRD
Bank #0 Active
Bank #1
Bank #2
Idle
Bank #3
Read
Active
Read
Read
Read
Read
Precharge
AP*
* AP is the internal precharge start timing
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