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參數(shù)資料
型號: W986408BH
廠商: WINBOND ELECTRONICS CORP
英文描述: 2M words x 8 bit x 4 Banks SDRAM(2M字 x 8 位 x 4 組同步動態(tài)RAM)
中文描述: 200萬字× 8位× 4個銀行的SDRAM(200萬字× 8位× 4組同步動態(tài)RAM)的
文件頁數(shù): 6/44頁
文件大小: 1858K
代理商: W986408BH
W986408BH
2M x 8 bit x 4 Banks SDRAM
Revision 1.2 Publication Release Date: April, 1999
- 6 -
AC CHARACTERISTICS AND OPERATING CONDITION
(Vcc=3.3V
±
0.3V, Ta=0
°
to 70
°
C Notes:5, 6, 7, 8)
-75
-8H
-8N
-10
SYMBO
t
RC
t
RAS
t
RCD
t
CCD
t
RP
t
RRD
t
WR
PARAMETER
Ref/Active
to
Active to precharge Command Period
Active to Read/Write Command Delay
Read/Write(a) to Read/Write(b)Command
Precharge to Active Command Period
Active(a) to Active(b) Command Period
Write Recovery Time
MIN
65
45
20
1
20
15
10
7.5
10
7.5
2.5
2.5
MAX
MIN
68
48
20
1
20
20
10
8
10
8
3
3
MAX
MIN
72
48
20
1
20
20
12
10
12
10
3
3
MAX
MIN
90
60
30
1
30
20
15
10
15
10
3
3
MAX
UNIT
Ref/Active
Command
100000
100000
100000
100000
Ns
Cycle
CL*=2
CL*=3
CL*=2
CL*=3
t
CK
CLK Cycle Time
1000
1000
1000
1000
1000
1000
1000
1000
t
CH
t
CL
t
AC
CLK High Level width
CLK Low Level width
Access Time from CLK
CL*=2
CL*=3
6
6
6
7
6
9
8
5.4
ns
t
OH
t
HZ
t
LZ
t
SB
t
T
t
DS
t
DH
t
AS
t
AH
t
CKS
t
CKH
t
CMS
t
CMH
t
REF
t
RSC
Output Data Hold Time
Output Data High Impedance Time
Output Data Low Impedance Time
Power Down Mode Entry Time
Transition Time of CLK (Rise and Fall)
Data-in Set-up Time
Data-in Hold Time
Address Set-up Time
Address Hold Time
CKE Set-up Time
CKE Hold Time
Command Set-up Time
Command Hold Time
Refresh Time
Mode register Set Cycle Time
2.7
2.7
0
0
0.5
1.5
0.8
1.5
0.8
1.5
0.8
1.5
0.8
3
3
0
0
3
3
0
0
3
3
0
0
7.5
8
8
10
7.5
10
8
10
8
10
10
0.5
2
1
2
1
2
1
2
1
0.5
2
1
2
1
2
1
2
1
10
0.5
3
1
3
1
3
1
3
1
64
64
64
64
ms
ns
15
16
16
20
* CL=CAS Latency
相關(guān)PDF資料
PDF描述
W986408CH 2M x 8BIT x 4 BANKS SDRAM
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W986408CH 制造商:WINBOND 制造商全稱:Winbond 功能描述:2M x 8BIT x 4 BANKS SDRAM
W986408CH-75 制造商:WINBOND 制造商全稱:Winbond 功能描述:x8 SDRAM
W986408CH-8H 制造商:WINBOND 制造商全稱:Winbond 功能描述:x8 SDRAM
W986416CH 制造商:WINBOND 制造商全稱:Winbond 功能描述:1M x 16 BIT x 4 BANKS SDRAM
W986416CH-6 制造商:WINBOND 制造商全稱:Winbond 功能描述:x16 SDRAM