參數(shù)資料
型號(hào)： ADT7463ARQZ-REEL
廠(chǎng)商： ON Semiconductor
文件頁(yè)數(shù)： 13/50頁(yè)
文件大?。?/td> 726K
描述： IC REMOTE THERMAL CTRLR 24-QSOP
產(chǎn)品變化通告： MFG CHG Notification ADI to ON Semi
QSOP 24ld Pkg (MSL) Change 17/Jun/2010
標(biāo)準(zhǔn)包裝： 2,500
系列： dBCool®
功能： 風(fēng)扇控制，溫度監(jiān)控器
傳感器類(lèi)型： 內(nèi)部和外部
感應(yīng)溫度： -40°C ~ 120°C，外部傳感器
精確度： ±1.5°C（最小值）
拓?fù)洌?/td> ADC，比較器，風(fēng)扇速度計(jì)數(shù)器，多路復(fù)用器，寄存器庫(kù)
輸出類(lèi)型： SMBus?
輸出警報(bào)： 無(wú)
輸出風(fēng)扇： 是
電源電壓： 3 V ~ 5.5 V
工作溫度： -40°C ~ 120°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 24-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 24-QSOP
包裝： 帶卷 (TR)
ADT7463
http://onsemi.com
13
Figure 19. Reading Data from a Previously Selected Register
SCL
SDA
D7
D6
D5
D4
D3
D2
D1
D0
NO ACK. BY
MASTER
START BY
MASTER
9
1
ACK. BY
ADT7463
9
STOP BY
MASTER
1
A1
A0
1
FRAME 1
SERIAL BUS ADDRESS BYTE
FRAME 2
DATA BYTE FROM ADT7463
R/W
1
0
1
0
When reading data from a register, there are two
possibilities:
1. If the ADT7463s 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 ADT7463 as
before, however, only the data byte is sent and this
contains the register address. 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.
2. If the address pointer register is already at the
desired address, data can be read from the
corresponding data register without first writing to
the address pointer register, so Figure 18 can be
omitted.
NOTES:
1. 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.
2. In Figures 17 to 19, the serial bus address is shown as the
default value 01011(A1)(A0), where A1 and A0 are set by
the address select mode function previously defined.
3. In addition to supporting the Send Byte and Receive Byte
protocols, the ADT7463 also supports the Read Byte
protocol (see System Management Bus specifications Rev.
2.0 for more information).
4. If it is required to perform several read or write operations
in succession, the master can send a repeat start condition
instead of a stop condition to begin a new operation.
ADT7463 Write Operations
The SMBus specification defines several protocols for
different types of read and write operations. The ones used
in the ADT7463 are discussed below. The following
abbreviations are used in the diagrams:
S  START
P  STOP
R  READ
W  WRITE
A  ACKNOWLEDGE
A
  NO ACKNOWLEDGE
The ADT7463 uses the following SMBus write protocols.
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 7bit slave address followed
by the write bit (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 ADT7463, the send byte protocol is used to write
a register address to RAM for a subsequent single byte read
from the same address. This is illustrated in Figure 20.
Figure 20. Setting a Register Address for
Subsequent Read
SLAVE
ADDRESS
W  A
S
A  P
REGISTER
ADDRESS
2
3
1
5   6
4
If it is required to read data from the register immediately
after setting up the address, the master 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 7bit slave address followed
by the write bit (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 to end
the transaction
This is illustrated in Figure 21.
Figure 21. Single Byte Write to a Register
SLAVE
ADDRESS
W  A
DATA
S
A
A   P
REGISTER
ADDRESS
2
3
1
5
6
7   8
4
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ADT7463ARQZ-REEL7 功能描述:IC REMOTE THERMAL CTRLR 24-QSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱管理 系列:dBCool® 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類(lèi)型:內(nèi)部和外部 感應(yīng)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(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫(kù) 輸出類(lèi)型:2 線(xiàn) SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱(chēng):296-22675-6
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ADT7466ARQZ-REEL 功能描述:板上安裝溫度傳感器 RMT THRM CTR VLT MON RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線(xiàn)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
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