參數(shù)資料
型號: DS2251T-64-16
英文描述: CONNECTOR ACCESSORY
中文描述: 連接器附件
文件頁數(shù): 10/20頁
文件大?。?/td> 654K
代理商: DS2251T-64-16
DS2251T
NOTES
5
1
10 of 20
PARAMETER
Pin Capacitance
Reset Trip Point in Stop Mode
w/BAT=3.0V
w/BAT=3.3V
SYMBOL
C
IN
MIN
TYP
MAX
10
UNITS
pF
V
4.0
4.4
4.25
4.65
AC CHARACTERISTICS: EXPANDED
BUS MODE TIMING SPECIFICATIONS
(t
A
=0
C to70
C; V
CC
=5V
±
10%)
#
PARAMETER
1
Oscillator Frequency
2
ALE Pulse Width
3
Address Valid to ALE Low
4
Address Hold After ALE Low
5
ALE Low to Valid Instr. In
@ 12 MHz
@ 16 MHz
6
ALE Low to
PSEN
Low
7
PSEN
Pulse Width
8
PSEN
Low to Valid Instr. In
@ 12 MHz
@ 16 MHz
9
Input Instr. Hold after
PSEN
Going High
10
Input Instr. Float after
PSEN
Going High
11
Address Hold after
PSEN
Going High
12
Address Valid to Valid Instr. In @ 12 MHz
@ 16 MHz
13
PSEN
Low to Address Float
14
RD
Pulse Width
15
WR
Pulse Width
16
RD
Low to Valid Data In
@ 12 MHz
@ 16 MHz
17
Data Hold after
RD
High
18
Data Float after
RD
High
19
ALE Low to Valid Data In
@ 12 MHz
@ 16 MHz
20
Valid Addr. to Valid Data In
@ 12 MHz
@ 16 MHz
21
ALE Low to
RD
or
WR
Low
22
Address Valid to
RD
or
WR
Low
23
Data Valid to
WR
Going Low
24
Data Valid to
WR
High
@ 12 MHz
SYMBOL
1/t
CLK
t
ALPW
t
AVALL
t
AVAAV
t
ALLVI
MIN
1.0
2t
CLK
-40
t
CLK
-40
t
CLK
-35
MAX
16 (-16)
UNITS
MHz
ns
ns
ns
ns
4t
CLK
-150
4t
CLK
-90
t
ALLPSL
t
PSPW
t
PSLVI
t
CLK
-25
3t
CLK
-35
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
3t
CLK
-150
3t
CLK
-90
t
PSIV
t
PSIX
t
PSAV
t
AVVI
0
t
CLK
-20
t
CLK
-8
5t
CLK
-150
5t
CLK
-90
t
PSLAZ
t
RDPW
t
WRPW
t
RDLDV
0
6t
CLK
-100
6t
CLK
-100
5t
CLK
-165
5t
CLK
-105
t
RDHDV
t
RDHDZ
t
ALLVD
0
2t
CLK
-70
8
CLK
-150
8t
CLK
-90
9t
CLK
-165
9t
CLK
-105
3t
CLK
+50
t
AVDV
t
ALLRDL
t
AVRDL
t
DVWRL
t
DVWRH
3t
CLK
-50
4t
CLK
-130
t
CLK
-60
7t
CLK
-150
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