參數(shù)資料
型號(hào): DS2404
廠商: DALLAS SEMICONDUCTOR
元件分類(lèi): Timer or RTC
英文描述: 0 TIMER(S), REAL TIME CLOCK, PDIP16
封裝: 0.300 INCH, DIP-16
文件頁(yè)數(shù): 20/29頁(yè)
文件大?。?/td> 760K
代理商: DS2404
DS2404
27 of 29
CAPACITANCE
(tA = 25°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Input Capacitance
CIN
10
pF
Output Capacitance
COUT
15
pF
I/O (1-Wire)
IIN/OUT
100
800
pF
8
RESISTANCES
(-40°C to +85°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
RST
Resistance to Ground
ZRST
65
k
DQ Resistance to Ground
ZDQ
65
k
CLK Resistance to Ground
ZCLK
65
k
AC ELECTRICAL CHARACTERISTICS:
3-WIRE PORT
(-40°C to +85°C; VCC = 5V+ 10%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Data to CLK Setup
tDC
35
ns
2
CLK to Data Hold
tCDH
40
ns
2
CLK to Data Delay
tCDD
100
ns
2,3,4
CLK Low Time
tCL
250
ns
2
CLK High Time
tCH
250
ns
2
CLK Frequency
tCLK
DC
2.0
MHz
2
CLK Rise and Fall
tR,tF
500
ns
2
RST
to CLK Setup
tCC
1
s
2
CLK to RST Hold
tCCH
40
ns
2
RST
Inactive Time
tCWH
250
ns
2
CLK or RST to DQ High Z
tCDZ
50
ns
2
AC ELECTRICAL CHARACTERISTICS:
1-WIRE PORT
(-40°C to +85°C; VCC =2.8 to 5.5V)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Time Slot
tSLOT
60
120
s
Write 1 Low Time
tLOW1
115
s
Write 0 Low Time
tLOW0
60
120
s
Read Low Time
tLOWR
115
s
Read Data Valid
tRDV
15
s
22
Release Time
tRELEASE
015
45
s
Read Data Setup
tSU
1
s
15
Recovery Time
tREC
1
s
Interrupt
tINT
960
4800
s
Reset Time High
tRSTH
480
s
14
Reset Time Low
tRSTL
480
960
s
20
Presence Detect High
tPDH
15
60
s
Presence Detect Low
tPDL
60
240
s
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參數(shù)描述
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