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| 型號： | ADT7462ACPZ-500RL7 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 4Cel, SQUARE, SURFACE MOUNT |
| 封裝： | 5 X 5 MM, LFCSP-32 |
| 文件頁數(shù)： | 10/88頁 |
| 文件大小： | 836K |
| 代理商： | ADT7462ACPZ-500RL7 |
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ADT7462
Rev. 2 | Page 18 of 88 | www.onsemi.com
When reading data from a register, there are two possibilities.
If the ADT7462 address pointer register value is unknown
or not the desired value, it must be set to the correct value
before data can be read from the desired data register. This
is done by performing a write to the ADT7462 as before, but
only the data byte containing the register address is sent
because no data is written to the register (see Figure 26).
A read operation is then performed, consisting of the serial
bus address and the R/W bit set to 1, followed by the data
byte read from the data register (see Figure 27).
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 (see Figure 27).
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 ADT7462 also supports the read byte protocol
(see System Management Bus Specifications Rev. 2.0 for more
information).
If several read or write operations must be performed in
succession, then the master can send a repeat start condition,
instead of a stop condition, to begin a new operation.
A3
SCL
SDA
START BY
MASTER
ACK. BY
ADT7462
ACK. BY
ADT7462
ACK. BY
ADT7462
STOP BY
MASTER
FRAME 2
ADDRESS POINTER REGISTER BYTE
FRAME 1
SERIAL BUS ADDRESS BYTE
19
9
1
R/W
D7
D6
D5
D4
D3
D2
D1
D0
A6
A5
A4
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
SCL (CONTINUED)
SDA (CONTINUED)
FRAME 3 DATA BYTE
0556
9-
015
Figure 25. Writing a Register Address to the Address Pointer Register, Then Writing Data to the Selected Register
A3
SCL
SDA
START BY
MASTER
ACK. BY
ADT7462
ACK. BY
ADT7462
STOP BY
MASTER
FRAME 2
ADDRESS POINTER REGISTER BYTE
FRAME 1
SERIAL BUS ADDRESS BYTE
19
9
1
R/W
D7
D6
D5
D4
D3
D2
D1
D0
A6
A5
A4
A2
A1
A0
05
569-
01
6
Figure 26. Writing to the Address Pointer Register Only
A3
SCL
SDA
START BY
MASTER
ACK. BY
ADT7462
NO ACK.
BY MASTER
STOP BY
MASTER
FRAME 2
DATA BYTE FROM ADT7462
FRAME 1
SERIAL BUS ADDRESS BYTE
19
9
1
R/W
D7
D6
D5
D4
D3
D2
D1
D0
A6
A5
A4
A2
A1
A0
05
569-
01
7
Figure 27. Reading Data from a Previously Selected Register
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| ADT7462ACPZ-5RL7 | 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ADT7462ACPZ-R7 | 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ADT7462ACPZ-REEL | 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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| ADT7462EBZEVB | 功能描述:EVALUATION BOARD ADT7462 制造商:on semiconductor 系列:* 零件狀態(tài):在售 標準包裝:1 |
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