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参数资料
| 型号： | DS1822Z |
| 厂商： | Maxim Integrated |
| 文件页数： | 16/21页 |
| 文件大小： | 0K |
| 描述： | IC THERMOMETER ECONO DIG 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 感应温度： | -55°C ~ 125°C |
| 输出类型： | 数字 |
| 电源电压： | 3 V ~ 5 V |
| 精确度： | ±2°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
DS1822
The DS1822 samples the 1-Wire bus during a window that lasts from 15 μ s to 60 μ s 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
START
OF SLOT
START
OF SLOT
V PU
1-WIRE BUS
GND
MASTER WRITE “0” SLOT
60 μ s < T X “0” < 120 μ s
MASTER WRITE “1” SLOT
1 μ s < T REC < ∞
> 1 μ s
MIN
DS1822 Samples
TYP MAX
MIN
DS1822 Samples
TYP MAX
15 μ s
15 μ s
30 μ s
15 μ s
15 μ s
30 μ s
V PU
1-WIRE BUS
GND
MASTER READ “0” SLOT
MASTER READ “1” SLOT
1 μ s < T REC < ∞
> 1 μ s
15 μ s
Master samples
45 μ s
> 1 μ s
15 μ s
Master samples
LINE TYPE LEGEND
Bus master pulling low
DS1822 pulling low
Resistor pullup
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 μ s in duration with a minimum of a 1 μ s 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 μ s 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
16 of 21
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1822Z/T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Econo 1-Wire Digital Thermometer |
| DS1822Z/T&R | 制造商:Maxim Integrated Products 功能描述:1-WIRE DIGITAL THERMOMETER SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER ECONO DIG 8-SOIC |
| DS1822Z/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 |
| DS1822Z+ | 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 |
| DS1822Z+ | 制造商:Maxim Integrated Products 功能描述:IC TEMP SENSOR 12BIT ?2 8-SOIC 制造商:Maxim Integrated Products 功能描述:IC, TEMP SENSOR, 12BIT, 2C, 8-SOIC |
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