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參數(shù)資料
| 型號： | DS1629S |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Timer or RTC |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封裝： | 0.150 INCH, SO-8 |
| 文件頁數(shù)： | 18/22頁 |
| 文件大小： | 985K |
| 代理商： | DS1629S |
DS1629
5 of 22
102299
At the same time, the counter is then preset with a value determined by the slope accumulator circuitry.
This circuitry is needed to compensate for the parabolic behavior of the oscillators over temperature. The
counter is then clocked again until it reaches 0. If the gate period is still not finished, then this process
repeats.
The slope accumulator is used to compensate for the nonlinear behavior of the oscillators over
temperature, yielding a high resolution temperature measurement. This is done by changing the number
of counts necessary for the counter to go through for each incremental degree in temperature. To obtain
the desired resolution, therefore, both the value of the counter and the number of counts per degree C (the
value of the slope accumulator) at a given temperature must be known.
Internally, this calculation is done inside the DS1629 to provide 0.5
°C resolution. Table 2 describes the
exact relationship of output data to measured temperature.
For Fahrenheit usage, a lookup table or
conversion factor must be used.
Note that temperature is represented in the DS1629 in terms of a 0.5
°C LSB, yielding the 9-bit format
illustrated in Table 2. Higher resolutions may be obtained by implementing the algorithm in Application
Note 105 and performing the following calculation. The 8-bit COUNT_REMAIN value can be obtained
via the Read Counter (A8h) command and the COUNT_PER_C value (also 8-bit) is read via the Read
Slope command (A9h).
T = TEMP_READ -0.25 +
C
COUNT_PER_
EMAIN)
_C_COUNT_R
(COUNT_PER
Temperature/Data Relationships Table 2
S
2
6
2
5
2
4
2
3
2
1
2
0
MSB
MSb
(unit = °C)
LSb
2
-1
0
LSB
TEMPERATURE
DIGITAL OUTPUT
(Binary)
DIGITAL OUTPUT
(Hex)
+125°C
01111101 00000000
7D00h
+25°C
00011001 00000000
1900
0.5°C
00000000 10000000
0080
0°C
00000000 00000000
0000
-0.5°C
11111111 10000000
FF80
-25°C
11100111 00000000
E700h
-55°C
11001001 00000000
C900h
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| DS1631S+ | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.50Cel, RECTANGULAR, SURFACE MOUNT |
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| DS1631AU+ | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.50Cel, SQUARE, SURFACE MOUNT |
| DS1631S | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.50Cel, RECTANGULAR, SURFACE MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1629S/T&R | 制造商:Maxim Integrated Products 功能描述:THE MAXIM DS1629S/T&R IS A TEMPERATURE SENSOR. - Tape and Reel 制造商:Maxim Integrated Products 功能描述:Maxim DS1629S/T&R, Digital Thermometer and real time clock -55C to +125C 2.2V-5.5V 8-pin SOIC 制造商:Maxim Integrated Products 功能描述:IC THERM/RTC/CALENDAR DIG 8-SOIC |
| DS1629S/T&R-W | 制造商:Maxim Integrated Products 功能描述:2-WIRE THERMOMETER & RTC T&R - Tape and Reel |
| DS1629S/T&R | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| DS1629S+ | 功能描述:板上安裝溫度傳感器 Digital Thermometer & RTC/Calendar RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| DS1629S+T&R | 制造商:Maxim Integrated Products 功能描述:2-WIRE THERMOMETER & RTC T&R LF 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 8SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERM/RTC/CALENDAR DIG 8-SOIC 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors Digital Thermometer & RTC/Calendar |
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