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| 型号： | ADT7482ARMZ-RL |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 温度/湿度传感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 2.5Cel, SQUARE, SURFACE MOUNT |
| 封装： | LEAD FREE, MO-187-BA, MSOP-10 |
| 文件页数： | 10/24页 |
| 文件大小： | 335K |
| 代理商： | ADT7482ARMZ-RL |
ADT7482
Rev. 1 | Page 18 of 24 | www.onsemi.com
1
19
1
9
00
1
0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
SCL
SDA
START BY
MASTER
ACK. BY
ADT7482
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
ADDRESS POINTER REGISTER BYTE
FRAME 3
DATA BYTE
SCL (CONTINUED)
SDA (CONTINUED)
ACK. BY
ADT7482
ACK. BY
ADT7482
STOP BY
MASTER
9
1
D7
D6
D5
D4
D3
D2
D1
D0
06
150-
017
Figure 17. Writing a Register Address to the Address Pointer Register, then Writing Data to the Selected Register
1
19
1
9
00
1
0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
SCL
SDA
START BY
MASTER
ACK. BY
ADT7482
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
ADDRESS POINTER REGISTER BYTE
ACK. BY
ADT7482
STOP BY
MASTER
06
150
-0
18
Figure 18. Writing to the Address Pointer Register Only
SCL
SDA
START BY
MASTER
ACK. BY
ADT7482
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
DATA BYTE FROM ADT7482
NO ACK.
BY MASTER
STOP BY
MASTER
19
1
9
1
0
1
0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
061
50-
019
Figure 19. Reading from a Previously Selected Register
Reading Data from a Register
When reading data from a register there are two possibilities:
If the ADT7482 address pointer register value is unknown
or not the desired value, it is first necessary to set it to the
correct value before data can be read from the desired data
register. This is done by performing a write to the
ADT7482 as before, but only the data byte containing the
register read address is sent, as data is not to be written to
the register. This is shown in Figure 18.
A read operation is then performed consisting of the serial
bus address, R/W bit set to 1, followed by the data byte
read from the data register. This is shown in Figure 19.
If the address pointer register is known to be already at the
desired address, data can be read from the corresponding
data register without first writing to the address pointer
register and the bus transaction shown in Figure 18 can be
omitted.
When reading data from a register, it is important to note the
following points:
1.
It is possible to read a data byte from a data register
without first writing to the address pointer register.
However, if the address pointer register is already at the
correct value, it is not possible to write data to a register
without writing to the address pointer register. This is
because the first data byte of a write is always written to the
address pointer register.
2.
Remember that some of the ADT7482 registers have
different addresses for read and write operations. The write
address of a register must be written to the address pointer
if data is to be written to that register, but it may not be
possible to read data from that address. The read address of
a register must be written to the address pointer before
data can be read from that register.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADT7482ARMZ-RL7 | 功能描述:板上安装温度传感器 2 CH TEMP SNSR/ALARM 2 WIRE SMBUS INTRFCE 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 |
| ADT7483A | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual Channel Temperature Sensor and Over Temperature Alarm |
| ADT7483AARQZ | 功能描述:板上安装温度传感器 2 TEMP DIODE MONITOR 2 WIRE SMBUS INTRFCE 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 |
| ADT7483AARQZ-R7 | 功能描述:板上安装温度传感器 2 TEMP DIODE MONITOR 2 WIRE SMBUS INTRFCE 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 |
| ADT7483AARQZ-REEL | 功能描述:IC TEMP SENSOR/ALARM 3CH 16-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
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