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参数资料
| 型号： | DS1822 |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
| 封装： | TO92-3 |
| 文件页数： | 8/21页 |
| 文件大小： | 222K |
| 代理商： | DS1822 |
DS1822
16 of 21
The DS1822 samples the 1-Wire bus during a window that lasts from 15
μs to 60μs after the master
initiates the write time slot. If the bus is high during the sampling window, a 1 is written to the DS1822.
If the line is low, a 0 is written to the DS1822.
READ/WRITE TIME SLOT TIMING DIAGRAM Figure 14
READ TIME SLOTS
The DS1822 can only transmit data to the master when the master issues read time slots. Therefore, the
master must generate read time slots immediately after issuing a Read Scratchpad [BEh] or Read Power
Supply [B4h] command, so that the DS1822 can provide the requested data. In addition, the master can
generate read time slots after issuing Convert T [44h] or Recall E
2 [B8h] commands to find out the status
of the operation as explained in the DS1822 FUNCTION COMMAND section.
All read time slots must be a minimum of 60
μs in duration with a minimum of a 1μs recovery time
between slots. A read time slot is initiated by the master device pulling the 1-Wire bus low for a
minimum of 1
μs and then releasing the bus (see Figure 14). After the master initiates the read time slot,
the DS1822 will begin transmitting a 1 or 0 on bus. The DS1822 transmits a 1 by leaving the bus high
and transmits a 0 by pulling the bus low. When transmitting a 0, the DS1822 will release the bus by the
end of the time slot, and the bus will be pulled back to its high idle state by the pullup resister. Output
45
μs
15
μs
VPU
GND
1-WIRE BUS
60
μs < T
X “0” < 120μs
1
μs < T
REC <
∞
DS1822 Samples
MIN
TYP
MAX
15
μs
30
μs
> 1
μs
MASTER WRITE “0” SLOT
MASTER WRITE “1” SLOT
VPU
GND
1-WIRE BUS
15
μs
MASTER READ “0” SLOT
MASTER READ “1” SLOT
Master samples
START
OF SLOT
START
OF SLOT
> 1
μs
1
μs < T
REC <
∞
15
μs
15
μs
30
μs
15
μs
DS1822 Samples
MIN
TYP
MAX
LINE TYPE LEGEND
Bus master pulling low
DS1822 pulling low
Resistor pullup
> 1
μs
相关PDF资料 |
PDF描述 |
|---|---|
| DS1822+T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
| DS1822Z | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT |
| DS18B20-PAR/T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.50Cel, ROUND, THROUGH HOLE MOUNT |
| DS18B20-PAR | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.50Cel, ROUND, THROUGH HOLE MOUNT |
| DS18B20P | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.50Cel, RECTANGULAR, SURFACE MOUNT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1822/T&R | 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 |
| DS1822+ | 功能描述:板上安装温度传感器 1-Wire Digital Thermometer 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 |
| DS1822+PAR | 功能描述:板上安装温度传感器 1-Wire Digital Thermometer 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 |
| DS1822+T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Econo 1-Wire Digital Thermometer |
| DS1822+T&R | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 1-WIRE 3PIN TO-92 - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER ECONO DIG TO-92 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors 1-Wire Digital Thermometer |
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