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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： | 15/17页 |
| 文件大小： | 461K |
| 代理商： | DS1821S |
DS1821
Page 7 of 17
CONFIGURATION REGISTER BIT DESCRIPTIONS Table 3
Bit Name
(User Access)
Functional Description
DONE — Temperature Conversion Done
(Read Only)
DONE = 0 — Temperature conversion is in progress.
DONE = 1 — Temperature conversion is complete.
NVB — Non-volatile Memory Busy
(Read Only)
NVB = 0 — Nonvolatile memory is not busy.
NVB = 1 — A write to EEPROM memory is in progress
THF* — Temperature High Flag
(Read/Write)
THF = 0 — The measured temperature has not exceeded the
value stored in the TH register.
THF = 1 — At some point in time the measured temperature has
been higher than the value stored in the TH register. THF will
remain a 1 until it is over-written with a 0 by the user.
TLF* — Temperature Low Flag
(Read/Write)
TLF = 0 — The measured temperature has not been lower than
the value stored in the TL register.
TLF = 1 — At some point in time the measured temperature has
been lower than the value stored in the TL register. TLF will
remain a 1 until it is over-written with a 0 by the user.
T/R
* — Power-up Operating Mode
(Read/Write)
T/R
= 0 — DS1821 powers up in 1- wire mode.
T/R
= 1 — DS1821 powers up in thermostat mode.
POL* — Thermostat Output (DQ) Polarity
(Read/Write)
POL = 0 — Thermostat output (DQ) is active low.
POL = 1 — Thermostat output (DQ) is active high.
1SHOT* — Conversion Mode
(Read/Write)
1SHOT = 0 — Continuous conversion mode. The Start Convert
T [EEh] command initiates continuous temperature conversions,
which can be stopped with the Stop Convert T [22h] command.
1SHOT = 1 — One-shot mode. The Start Convert T [EEh]
command initiates a single temperature conversion after which
the DS1821 returns to a low-power standby state.
*Stored in EEPROM
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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