W982516BH Datasheet, PDF (27/43 Pages) Winbond – 4M X 4 BANKS X 16 BIT SDRAM

Operating Timing Example, continued
Page Mode Read (Burst Length = 4, CAS Latency = 3)
W982516BH
(CLK = 100 MHz)
CLK
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
CS
RAS
tCCD
tRAS
tCCD
tRAS
tCCD
tRP
tRP
CAS
WE
BS0
BS1
tRCD
tRCD
A10 ^RAa
RBb
A0-A9,
RAa
A11,12
DQM
CAI RBb
CBx
CAy
CAm
CBz
CKE
DQ
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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Publication Release Date: December 13, 2001
Revision A2