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零件编号
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W986408CH 查看數據表(PDF) - Winbond
零件编号
产品描述 (功能)
生产厂家
W986408CH
2M x 8 bit x 4 Banks SDRAM
Winbond
W986408CH Datasheet PDF : 44 Pages
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W986408CH
2M x 8 bit x 4 Banks SDRAM
Operating Timing Example
Interleaved Bank 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
RAS
CAS
t
RC
t
RAS
t
RC
t
RP
t
RAS
t
RC
t
RAS
t
RP
t
RC
t
RP
t
RAS
WE
BS0
BS1
A10
RAa
t
RCD
A0-A9,
RAa
A11
CAw
DQM
t
RCD
t
RCD
t
RCD
RBb
RAc
RBd
RAe
RBb
CBx
RAc
CAy
RBd
CBz
RAe
CKE
DQ
Bank #0 Active
Bank #1
Bank #2
Idle
Bank #3
t
RRD
t
AC
aw0 aw1 aw2 aw3
t
RRD
t
AC
bx0 bx1 bx2 bx3
t
RRD
t
AC
t
AC
cy0 cy1
cy2
cy3
t
RRD
Read
Precharge
Active
Read
Active
Read
Precharge
Active
Precharge
Read
Active
Revision 1.0
- 19 -
Publication Release Date: March, 1999
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