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參數(shù)資料
型號(hào): W986416CH-75
廠商: WINBOND ELECTRONICS CORP
元件分類: DRAM
英文描述: x16 SDRAM
中文描述: 4M X 16 SYNCHRONOUS DRAM, 5.4 ns, PDSO54
封裝: 0.400 INCH, 0.80 MM PITCH, TSOP2-54
文件頁(yè)數(shù): 16/48頁(yè)
文件大小: 1647K
代理商: W986416CH-75
W986416DH
- 16 -
13. AC CHARACTERISTICS
(V
CC
= 3.3V
±
0.3V, V
SS
= 0V, T
A
= 0 to 70
°
C for -5/-6/-7/-7L, T
A
= -40 to 85
°
C for -6I) (Notes: 5, 6)
PARAMETER
SYM.
-5
-6/-6I
-7/-7L
UNIT
NOTE
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
Ref/Active to Ref/Active Command
Period
t
RC
54
60
65
nS
Active to precharge Command Period
t
RAS
40
100000
42
100000
45
100000
Active to Read/Write Command Delay
Time
t
RCD
14
18
20
Read/Write(a) to Read/Write(b)
Command Period
t
CCD
1
1
1
Cycle
Precharge to Active(b) Command Period
t
RP
14
18
20
nS
Active(a) to Active(b) Command Period
t
RRD
10
12
14
Write Recovery Time
CL* = 2
t
WR
7
7.5
8
CL* = 3
5
6
7
CLK Cycle Time
CL* = 2
t
CK
7
1000
7.5
1000
8
1000
CL* = 3
5
1000
6
1000
7
1000
CLK High Level
t
CH
1.5
2
2
CLK Low Level
t
CL
1.5
2
2
Access Time from CLK
CL* = 2
t
AC
5.5
5.5
6
CL* = 3
4.5
5
5.5
Output Data Hold Time
t
OH
1.5
2
2
Output Data High Impedance Time
t
HZ
1.5
5
2
6
2
7
Output Data Low Impedance Time
t
LZ
0
0
0
Power Down Mode Entry Time
t
SB
0
5.5
0
6
0
7
Transition Time of CLK (Rise and Fall)
t
T
0.5
10
0.5
10
0.5
10
Data-in-Set-up Time
t
DS
1.5
1.5
1.5
Data-in Hold Time
t
DH
1
1
1
Address Set-up Time
t
AS
1.5
1.5
1.5
Address Hold Time
t
AH
1
1
1
CKE Set-up Time
t
CKS
1.5
1.5
1.5
CKE Hold Time
t
CKH
1
1
1
Command Set-up Time
t
CMS
1.5
1.5
1.5
Command Hold Time
t
CMH
1
1
1
Refresh Time
t
REF
64
64
64
mS
Mode Register Set Cycle Time
t
RSC
10
12
14
nS
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