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参数资料
| 型号： | DS1821S |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 1Cel, RECTANGULAR, SURFACE MOUNT |
| 封装： | 0.208 INCH, SOIC-8 |
| 文件页数： | 4/17页 |
| 文件大小： | 461K |
| 代理商： | DS1821S |
DS1821
Page 12 of 17
Figure 9 illustrates that the sum of TINIT, TRC, and TSAMPLE must be less than 15
s for a read time slot.
Figure 10 shows that system timing margin is maximized by keeping TINIT and TRC as short as possible
and by locating the master sample time during read time slots towards the end of the 15
s period.
READ/WRITE TIME SLOT TIMING DIAGRAM Figure 8
DETAILED MASTER READ 1 TIMING Figure 9
RECOMMENDED MASTER READ 1 TIMING Figure 10
VDD
GND
1-WIRE BUS
15
s
VIH of Master
TRC
TINT > 1
s
Master samples
VDD
GND
1-WIRE BUS
15
s
VIH of Master
TRC =
small
TINT =
small
Master samples
LINE TYPE LEGEND (Figure 8, Figure 9 and Figure 10)
Bus master pulling low
DS1821 pulling low
Resistor pullup
45
s
15
s
VDD
GND
1-WIRE BUS
60
s < TX “0” < 120
1
s < TREC <
∞
DS1821 samples
MIN
TYP
MAX
15
s
30
s
> 1
s
MASTER WRITE “0” SLOT
MASTER WRITE “1” SLOT
DS1821 samples
MIN
TYP
MAX
VDD
GND
1-WIRE BUS
15
s
MASTER READ “0” SLOT
MASTER READ “1” SLOT
Master samples
START
OF SLOT
START
OF SLOT
> 1
s
1
s < TREC <
∞
15
s
15
s
30
s
15
s
> 1
s
相关PDF资料 |
PDF描述 |
|---|---|
| DS1821 | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 1Cel, ROUND, SURFACE MOUNT |
| DS1821T | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), RECTANGULAR, THROUGH HOLE MOUNT |
| DS1822-PAR+T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
| DS1822-PAR/T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
| DS1822-PAR | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.20Cel, ROUND, THROUGH HOLE MOUNT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1821S/T&R | 制造商:Maxim Integrated Products 功能描述:PROGRAM THERMOSTAT 208ML 8-SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT PROG 8-SOIC |
| DS1821S/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 |
| DS1821S/TR | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Programmable Digital Thermostat and Thermometer |
| DS1821S+ | 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 |
| DS1821S+R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Programmable Digital Thermostat and Thermometer |
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