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參數(shù)資料
| 型號： | DS1775R/TR6 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 10/13頁 |
| 文件大?。?/td> | 201K |
| 代理商： | DS1775R/TR6 |
DS1775
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CONFIGURATION REGISTER PROGRAMMING
The configuration register is accessed if the DS1775 pointer is currently set to the 01h location. Writing to
or reading from the register is determined by the R/W bit of the 2–wire control byte (See “2–wire Serial
Data Bus” section). Data is read from or written to the configuration register MSb first. The format of the
register is illustrated below in Figure 3. The effect each bit has on DS1775 functionality is described below
along with the power–up state of the bit. The user has read/write access to all bits in the configuration
register. The entire register is volatile, and thus it will power–up in the default state.
CONFIGURATION/STATUS REGISTER Figure 3
0R1
R0
F1
F0
POL
TM
SD
MSb
LSb
SD = Shutdown bit. If SD is “0”, the DS1775 will continuously perform temperature conversions and store
the last completed result in the thermometer register. If SD is changed to “1”, the conversion in progress
will be completed and stored; then the device will revert to a low–power standby mode. The O.S. output
will be cleared if the device is in the interrupt mode and remain unchanged in the comparator mode. The
2-wire port remains active. The power–up default state is “0” (continuous conversion mode).
TM = Thermostat mode. If TM=“0”, the DS1775 is in the comparator mode. TM=“1” sets the device to the
interrupt mode. See “OPERATION–Thermostat Control” section for a description of the difference
between the two modes. The power–up default state of the TM bit is “0” (comparator mode).
POL = O.S. Polarity Bit. If POL = “1”, the active state of the O.S. output will be high. A “0” stored in this
location sets the thermostat output to an active low state. The user has read/write access to the POL bit, and
the power–up default state is “0” (active low).
F0, F1 = O.S. Fault Tolerance bits. The fault tolerance defines the number of consecutive conversions
returning a temperature beyond limits is required to set the O.S. output in an active state. This may be
necessary to add margin in noisy environments. Table 4 below defines the four settings. The DS1775 will
power up with F0=F1=“0”, such that a single occurrence will trigger a fault.
FAULT TOLERANCE CONFIGURATION Table 4
F1
F0
Consecutive conversions beyond limits to generate fault
00
1
01
2
10
4
11
6
R0, R1 = Thermometer resolution bits. Table 5 defines the resolution of the digital thermometer, based on
the settings of these two bits. There is a direct trade-off between resolution and conversion time, as depicted
in the AC Electrical Characteristics. The default state is R0="0" and R1="0" (9–bit conversions).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1775R-U | 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(zhǔn)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(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| DS1776 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PI-Bus Transceiver |
| DS1776E/883 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PI-Bus Transceiver |
| DS1776J/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| DS1776W/883 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single 8-bit Bus Transceiver |
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