參數(shù)資料
型號: W981204AH-8H
英文描述: x4 SDRAM
中文描述: x4內(nèi)存
文件頁數(shù): 34/42頁
文件大?。?/td> 1082K
代理商: W981204AH-8H
W981204AH
8M x 4 Banks x 4 bits SDRAM
Revision 1.0 Publication Release Date: June, 2000
- 34 -
Autoprecharge timing ( Write Cycle )
D0
Write
Act
AP
0
11
10
9
8
7
6
5
4
3
2
1
D0
D0
D0
D0
AP
Act
D1
AP
Act
D1
D1
D2
D2
D3
D3
D4
D5
D6
D7
AP
Act
AP
Act
AP
Act
D1
D0
AP
Act
D1
D2
D3
AP
Act
D0
D1
D2
D3
D4
D5
D6
D7
Write
Write
Write
Write
Write
Write
Write
D0
(1) CAS Latency=2
(2) CAS Latency=3
Write
Act
AP
When the Auto precharge command is asserted, the period from Bank Activate
command to the start of internal precgarging must be at least tRAS(min). .
represents the Write with Auto precharge command.
represents the start of internal precharging.
represents the Bank Activate command.
Note )
t
RP
t
WR
t
RP
t
WR
t
RP
t
WR
t
RP
t
WR
t
RP
t
WR
t
RP
t
WR
t
RP
t
WR
t
RP
t
WR
( a ) burst length = 1
Command
( b ) burst length = 2
Command
( c ) burst length = 4
Command
( d ) burst length = 8
Command
DQ
DQ
DQ
DQ
( a ) burst length = 1
Command
( b ) burst length = 2
Command
( c ) burst length = 4
Command
( d ) burst length = 8
Command
DQ
DQ
DQ
DQ
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W981208AH 制造商:WINBOND 制造商全稱:Winbond 功能描述:4M x 8 bit x 4 Banks SDRAM
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W981208AH-8H 制造商:WINBOND 制造商全稱:Winbond 功能描述:x8 SDRAM
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W981208BH-7 制造商:WINBOND 制造商全稱:Winbond 功能描述:x8 SDRAM