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參數(shù)資料
| 型號： | STDS75 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Digital temperature sensor and thermal watchdog |
| 中文描述： | 數(shù)字溫度傳感器和熱看門狗 |
| 文件頁數(shù)： | 19/37頁 |
| 文件大小： | 204K |
| 代理商： | STDS75 |
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STDS75
Functional description
19/37
3.1.5
Hysteresis temperature register (T
HYS
)
T
HYS
Register is a two-byte (16-bit) READ/WRITE register that stores the user-
programmable lower trip-point temperature for the thermal alarm in two’s complement
format (see
Table 9
). This register defaults to 75°C at power-up (i.e., 0100 1011 0000
0000).
The format of this register is the same as that of the Temperature Register. The 4 LSBs of
the T
HYS
Register are hardwired to zero, so data written to these bits is ignored. The MSB
position contains the sign bit for the digital temperature and Bit14 contains the temperature
MSB.
The resolution setting for the A/D conversion determines how many bits of the T
HYS
Register are used by the thermal alarm. For example, for 9-bit conversions, the hysteresis
temperature is defined by the 9 MSBs of the T
HYS
Register, and all remaining bits are “Don’t
cares.”
Table 9.
Note:
These are comparable formats to the DS75 and LM75.
3.2
Power-up default conditions
The STDS75 always powers up in the following default states:
Thermostat mode = Comparator Mode
Polarity = Active-low
Fault tolerance = 1 fault (i.e., relevant bits set to '0' in the Configuration register)
T
OS
= 80°C
T
HYS
= 75°C
Register pointer = 00 (Temperature register)
Conversion resolution = 9-bit (i.e., RC0 = 0 and RC1 = 0 in the Configuration register;
see
Table 7 on page 17
)
●
●
●
●
●
●
●
Note:
After power-up these conditions can be reprogrammed via the serial interface.
T
OS
and T
HYS
register format
MS Byte
Bytes
LS Byte
Bits
MSB
THSB
TLSB
LSB
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
STDS75
SB
TMSB TD
TD
TD
TD TD TD
9-bit
LSB
10-bit
LSB
11-bit
LSB
12-bit
LSB
0
0
0
0
Keys:
SB =Two’s complement Sign Bit
TMSB =Temperature MSB
TLSB =Temperature LSB
TD =Temperature Data
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| STDS75DS2F | 功能描述:板上安裝溫度傳感器 Digital TEMP sensor thermal watchdog 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(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| STDS75M2E | 功能描述:板上安裝溫度傳感器 Digital Temp Snsr Thermal Watchdog 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(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| STDS75M2F | 功能描述:板上安裝溫度傳感器 Digital Temp Snsr Thermal Watchdog 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(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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