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| 型号： | DS1820 |
| 厂商： | Maxim Integrated |
| 文件页数： | 19/23页 |
| 文件大小： | 0K |
| 描述： | IC DGTL THERMOMETER TO92-3 |
| 其它有关文件： | DS1820 Digital Thermometer |
| 标准包装： | 500 |
| 感应温度： | -55°C ~ 125°C |
| 输出类型： | 开路漏极 |
| 电源电压： | 3 V ~ 5.5 V |
| 精确度： | ±0.5°C |
| 封装/外壳： | TO-226-3、TO-92-3 标准主体 |
| 供应商设备封装： | TO-92 |
| 包装： | 散装 |
DS18S20
DS18S20 OPERATION EXAMPLE 3
In this example there is only one DS18S20 on the bus and it is using parasite power. The bus master
initiates a temperature conversion then reads the DS18S20 scratchpad and calculates a higher resolution
result using the data from the temperature, COUNT REMAIN and COUNT PER °C registers.
MASTER MODE
Tx
Tx
Tx
Tx
Tx
Tx
Rx
Tx
Tx
Rx
Tx
Rx
—
DATA (LSB FIRST)
Reset
Presence
CCh
44h
DQ line held high by
strong pullup
Reset
Presence
CCh
BEh
9 data bytes
Reset
Presence
—
COMMENTS
Master issues reset pulse.
DS18S20 responds with presence pulse.
Master issues Skip ROM command.
Master issues Convert T command.
Master applies strong pullup to DQ for the duration of the
conversion (t CONV ).
Master issues reset pulse.
DS18S20 responds with presence pulse.
Master issues Skip ROM command.
Master issues Read Scratchpad command.
Master reads entire scratchpad including CRC. The master
then recalculates the CRC of the first eight data bytes from the
scratchpad and compares the calculated CRC with the read
CRC (byte 9). If they match, the master continues; if not, the
read operation is repeated. The master also calculates the
TEMP_READ value and stores the contents of the COUNT
REMAIN and COUNT PER °C registers.
Master issues reset pulse.
DS18S20 responds with presence pulse.
CPU calculates extended resolution temperature using the
equation in the Operation—Measuring Temperature section.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1820K | 制造商:Maxim Integrated Products 功能描述:THERMOMETER DEMO KIT |
| DS1820S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:DS1820.DS1820S Digital Thermometer Replacements |
| DS1821 | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| DS1821_07 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Programmable Digital Thermostat and Thermometer |
| DS1821+ | 功能描述:板上安装温度传感器 Programmable Digital Thermostat/Thrmmtr RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
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