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| 型號： | ADT7473ARQZ-1REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2.50Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | ROHS COMPLIANT, MO-137AB, QSOP-16 |
| 文件頁數(shù)： | 4/72頁 |
| 文件大?。?/td> | 1494K |
| 代理商： | ADT7473ARQZ-1REEL7 |
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ADT7473/ADT7473-1
Rev. C | Page 12 of 72
R/W
0
SCL
SDA
10
1
0
D7
D6
D5
D4
D3
D2
D1
D0
STOP BY
MASTER
START BY
MASTER
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
ADDRESS POINTER REGISTER BYTE
1
9
ACK. BY
ADT7473/ADT7473-1
9
04
686
-0
17
ACK. BY
ADT7473/ADT7473-1
Figure 20. Writing to the Address Pointer Register Only
R/W
0
SCL
SDA
10
1
0
D7
D6
D5
D4
D3
D2
D1
D0
NO ACK. BY
MASTER
STOP BY
MASTER
START BY
MASTER
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
DATA BYTE FROM ADT7473
1
9
ACK. BY
ADT7473/ADT7473-1
9
04
68
6
-01
8
Figure 21. Reading Data from a Previously Selected Register
It is possible to read a data byte from a data register without
first writing to the address pointer register, if the address
pointer register is already at the correct value. However, it is
not possible to write data to a register without writing to the
address pointer register, because the first data byte of a write
is always written to the address pointer register.
In addition to supporting the send byte and receive byte
protocols, the ADT7473/ADT7473-1 also supports the read
byte protocol. (See System Management Bus (SMBus)
Specifications Version 2 for more information; this document is
available from Intel.)
If several read or write operations must be performed in succes-
sion, the master can send a repeat start condition instead of a
stop condition to begin a new operation.
WRITE OPERATIONS
The SMBus specification defines several protocols for various
read and write operations. The ADT7473/ADT7473-1 uses the
following SMBus write protocols. The following abbreviations
are used in the diagrams:
S—Start
P—Stop
R—Read
W—Write
A—Acknowledge
A—No Acknowledge
Send Byte
In this operation, the master device sends a single command
byte to a slave device, as follows:
1.
The master device asserts a start condition on SDA.
2.
The master sends the 7-bit slave address followed by the
write bit (active low).
3.
The addressed slave device asserts ACK on SDA.
4.
The master sends a command code.
5.
The slave asserts ACK on SDA.
6.
The master asserts a stop condition on SDA and the
transaction ends.
For the ADT7473/ADT7473-1, the send byte protocol is used to
write a register address to RAM for a subsequent single-byte read
from the same address. This operation is illustrated in Figure 22.
046
86
-019
SLAVE
ADDRESS
WA
SA
REGISTER
ADDRESS
23
15
4
P
6
Figure 22. Setting a Register Address for Subsequent Read
If the master is required to read data from the register immedi-
ately after setting up the address, it can assert a repeat start
condition immediately after the final ACK and carry out a
single-byte read without asserting an intermediate stop
condition.
Write Byte
In this operation, the master device sends a command byte and
one data byte to the slave device, as follows:
1.
The master device asserts a start condition on SDA.
2.
The master sends the 7-bit slave address followed by the
write bit (active low).
3.
The addressed slave device asserts ACK on SDA.
4.
The master sends a command code.
5.
The slave asserts ACK on SDA.
6.
The master sends a data byte.
7.
The slave asserts ACK on SDA.
8.
The master asserts a stop condition on SDA, and the
transaction ends.
The single byte write operation is illustrated in Figure 23.
04
68
6-
02
0
SLAVE
ADDRESS WA
DATA
SA
REGISTER
ADDRESS
23
15
4
A P
6
7 8
Figure 23. Single-Byte Write to a Register
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADT7473ARQZ-1RL | 功能描述:板上安裝溫度傳感器 FAN CNTRLR/INT MON RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| ADT7473ARQZ-REEL | 功能描述:板上安裝溫度傳感器 FAN CNTRLR/INT MON RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| ADT7473ARQZ-REEL7 | 功能描述:IC REMOTE THERMAL CTRLR 16QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:dBCool® 標準包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠程（最大值） 拓撲:ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| ADT7473ARQZ-RL7 | 功能描述:板上安裝溫度傳感器 FAN CNTRLR/INT MON RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| ADT7473EBZEVB | 功能描述:EVALUATION BOARD ADT7473 制造商:on semiconductor 系列:* 零件狀態(tài):在售 標準包裝:1 |
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