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参数资料
| 型号： | DS1624S/T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 3/18页 |
| 文件大小： | 424K |
| 描述： | IC THERM/EEPROM DIG 256BYT 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 功能： | 温度计，恒温计 |
| 传感器类型： | 内部 |
| 感应温度： | -55°C ~ 125°C |
| 精确度： | ±0.5°C（最小值） |
| 拓扑： | EEPROM，寄存器库 |
| 输出类型： | 2 线串行 |
| 输出警报： | 无 |
| 输出风扇： | 无 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.209"，5.30mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
DS1624
f 1
2-WIRE SERIAL DATA BUS
The DS1624 supports a bidirectional two-wire bus and data transmission protocol. A device that sends
data onto the bus is defined as a transmitter, and a device receiving data as a receiver. The device that
controls the message is called a master. The devices that are controlled by the master are slaves. The
bus must be controlled by a master device which generates the serial clock (SCL), controls the bus access,
and generates the START and STOP conditions. The DS1624 operates as a slave on the two-wire bus.
Connections to the bus are made via the open-drain I/O lines SDA and SCL. The following bus protocol
has been defined (see Figure 2):
" Data transfer may be initiated only when the bus is not busy.
" During data transfer, the data line must remain stable whenever the clock line is high. Changes in the
data line while the clock line is high will be interpreted as control signals.
Accordingly, the following bus conditions have been defined:
Bus not busy: Both data and clock lines remain high.
Start data transfer: A change in the state of the data line, from high to low, while the clock is high,
defines a START condition.
Stop data transfer: A change in the state of the data line, from low to high, while the clock line is high,
defines the STOP condition.
Data valid: The state of the data line represents valid data when, after a START condition, the data line
is stable for the duration of the high period of the clock signal. The data on the line must be changed
during the low period of the clock signal. There is one clock pulse per bit of data.
Each data transfer is initiated with a START condition and terminated with a STOP condition. The
number of data bytes transferred between START and STOP conditions is not limited, and is determined
by the master device. The information is transferred byte-wise and each receiver acknowledges with a
ninth bit.
Within the bus specifications a standard mode (100kHz clock rate) and a fast mode (400kHz clock rate)
are defined. The DS1624 works in both modes.
Acknowledge: Each receiving device, when addressed, is obliged to generate an acknowledge after the
reception of each byte. The master device must generate an extra clock pulse, which is associated with
this acknowledge bit.
A device that acknowledges must pull down the SDA line during the acknowledge clock pulse in
such a way that the SDA line is stable low during the high period of the acknowledge related
clock pulse. Of course, setup and hold times must be taken into account. A master must signal an
end of data to the slave by not generating an acknowledge bit on the last byte that has been
clocked out of the slave. In this case, the slave must leave the data line high to enable the master
to generate the STOP condition.
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相关代理商/技术参数 |
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| DS1625S | 制造商:Maxim Integrated Products 功能描述:DIGITAL THERMOMETER, 8 Pin, SOP |
| DS1626 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:High-Precision 3-Wire Digital Thermometer and Thermostat |
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| DS1626S | 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 |
| DS1626S+ | 功能描述:板上安装温度传感器 Digital Thermometer & Thermostat 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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