參數(shù)資料
型號(hào)： ADT7463ARQZ-REEL
廠商： ON Semiconductor
文件頁數(shù)： 11/50頁
文件大小： 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
輸出類型： SMBus?
輸出警報(bào)： 無
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
11
Serial Bus Interface
Control of the ADT7463 is carried out using the serial
system management bus (SMBus). The ADT7463 is
connected to this bus as a slave device, under the control of
a master controller.
The ADT7463 has a 7bit serial bus address. When the
device    is    powered    up    with    Pin 13    (PWM3/
ADDRESS ENABLE
) high, the ADT7463 has a default
SMBus address of 0101110 or 0x2E. The read/write bit must
be added to get the 8bit address. If more than one ADT7463
is used in a system, then each ADT7463 should be placed in
address select mode by strapping Pin 13 low on powerup.
The logic state of Pin 14 then determines the devices
SMBus address. The logic of these pins is sampled upon
powerup.
The device address is sampled and latched on the first
valid   SMBus   transaction,   more   precisely   on   the
lowtohigh transition at the beginning of the 8th SCL
pulse, when the serial bus address byte matches the selected
slave address. The selected slave address is chosen using the
address enable/address select pins. Any attempted changes
in the address will have no effect after this.
Table 5. ADDRESS SELECT MODE
Pin 13
State
Pin 14 State
Address
0
Low (10 kW to GND)
0101100 (0x2C)
0
High (10 kW Pullup)
0101101 (0x2D)
1
Dont Care
0101110 (0x2E) (Default)
Figure 13. Default SMBus Address = 0x2E
ADDR_SEL
ADT7463
14
13
PWM3/
ADDR_EN
10 kW
ADDRESS = 0x2E
V
CC
Figure 14. SMBus Address = 0x2C (Pin 14 = 0)
ADDR_SEL
ADT7463
14
13
PWM3/
ADDR_EN
10 kW
ADDRESS = 0x2C
Figure 15. SMBus Address = 0x2D (Pin 14 = 1)
ADDR_SEL
ADT7463
14
13
PWM3/
ADDR_EN
10 kW
ADDRESS = 0x2D
V
CC
Figure 16. Unpredictable SMBus Address if Pin 13
is Unconnected
UNCONNECTED! CAN
CAUSE UNPREDICTABLE
ADDRESSES.
NOTE THAT IF THE ADT7463 IS PLACED INTO ADDRESS
SELECT MODE, PINS 13 AND 14 CAN BE USED AS THE
ALTERNATE FUNCTIONS (PWM3, TACH4/THERM
) ONLY IF THE
CORRECT CIRCUIT IS MUXED IN AT THE CORRECT TIME.
CARE SHOULD BE TAKEN TO ENSURE THAT PIN 13
(PWM3/ADDR_EN
) IS EITHER TIED HIGH OR LOW. LEAVING
PIN 13 FLOATING COULD CAUSE THE ADT7463 TO POWERUP
WITH AN UNEXPECTED ADDRESS.
DO NOT LEAVE ADDR_EN
ADDR_SEL
ADT7463
14
13
PWM3/
ADDR_EN
10 kW
V
CC
NC
The ability to make hardwired changes to the SMBus
slave address allows the user to avoid conflicts with other
devices sharing the same serial bus, for example, if more
than one ADT7463 is used in a system.
The serial bus protocol operates as follows:
1. The master initiates data transfer by establishing a
START condition, defined as a hightolow
transition on the serial data line SDA while the
serial clock line SCL remains high. This indicates
that an address/data stream will follow. All slave
peripherals connected to the serial bus respond to
the START condition and shift in the next eight
bits, consisting of a 7bit address (MSB first) plus
a R/W
 bit, which determines the direction of the
data transfer, i.e., whether data will be written to
or read from the slave device.
The peripheral whose address corresponds to the
transmitted address responds by pulling the data
line low during the low period before the ninth
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ADT7463ARQZ-REEL7 功能描述:IC REMOTE THERMAL CTRLR 24-QSOP RoHS:是 類別: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 輸出類型:2 線 SMBus? 輸出警報(bào):無 輸出風(fēng)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(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADT7466 制造商:AD 制造商全稱:Analog Devices 功能描述:dBCool Remote Thermal Controller and Voltage Monitor
ADT7466ARQZ 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 輸出類型:Digital 配置: 準(zhǔn)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
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 輸出類型:Digital 配置: 準(zhǔn)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
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