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參數(shù)資料
| 型號(hào)： | DS1920 |
| 英文描述： | Temperature iButton |
| 文件頁數(shù)： | 21/22頁 |
| 文件大?。?/td> | 729K |
| 代理商： | DS1920 |
DS1920
21 of 22
AC ELECTRICAL CHARACTERISTICS:
1-WIRE INTERFACE
PARAMETER
Time Slot
Write 1 Low Time
Write 0 Low Time
Read Data Valid
Release Time
Read Data Setup
Recovery Time
Reset Time High
Reset Time Low
Presence Detect High
Presence Detect Low
(-55°C to +100°C; V
PUP
=2.8V to 6.0V)
TYP
MAX
120
15
120
exactly 15
15
45
1
SYMBOL
t
SLOT
t
LOW1
t
LOW0
t
RDV
t
RELEASE
t
SU
t
REC
t
RSTH
t
RSTL
t
PDHIGH
t
PDLOW
MIN
60
1
60
UNITS
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
NOTES
0
8
1
480
480
15
60
4800
60
240
6,7
NOTES:
1.
Temperature conversion will work with ±2°C accuracy down to V
PUP
= 3.4V.
2.
All voltages are referenced to ground.
3.
I
DD
specified with low impedance pull up to 5.0V.
4.
Active current refers to temperature conversion.
5.
Writing to EEPROM consumes approximately 200
μ
A.
6.
t
RSTL
may be up to 4800
μ
s. With longer times, the result of temperature conversion may get lost.
7.
The reset low time should be restricted to a maximum of 960 ms, to allow interrupt signaling,
otherwise it could mask or conceal interrupt pulses.
8.
Read data setup time refers to the time the host must pull the 1-Wire bus low to read a bit. Data is
guaranteed to be valid within 1
μ
s of this falling edge and will remain valid for 14
μ
s minimum. (15
μ
s total from falling edge on 1-Wire bus.)
9.
Capacitance on the data contact could be 800 pF when power is first applied. If a 5k
resistor is used
to pull up the data line to V
CC
, 5
μ
s after power has been applied, the parasite capacitance will not
affect normal communications.
10.
Under certain low voltage conditions V
ILMAX
may have to be reduced to as much as 0.5V to always
guarantee a presence pulse.
11.
See Typical Curve for specification limits outside the 0°C to 70°C range. Thermometer error reflects
sensor accuracy as tested during calibration.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1920-F3 | Temperature iButton |
| DS1921 | High-Resolution Thermochron iButton |
| DS1921H-F5 | High-Resolution Thermochron iButton |
| DS1921Z-F5 | High-Resolution Thermochron iButton |
| DS1963L-F5 | NVRAM (Battery Based) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1920+F5 | 制造商:Maxim Integrated Products 功能描述:TEMP IBTN 2PIN F5 MICROCAN - Rail/Tube |
| DS1920-F3 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Temperature iButton |
| DS1920-F5 | 功能描述:iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated |
| DS1920-F5+ | 功能描述:iButton Temperature iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated |
| DS1921 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High-Resolution Thermochron iButton |
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