- 您現在的位置：買賣IC網 > PDF目錄374038 > ADT7460ARQ (ANALOG DEVICES INC) dB COOL?? Remote Thermal Controller and Fan Controller PDF資料下載
參數資料
| 型號： | ADT7460ARQ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | dB COOL?? Remote Thermal Controller and Fan Controller |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | 0.025 INCH PITCH, MO-137AB, QSOP-16 |
| 文件頁數： | 9/48頁 |
| 文件大?。?/td> | 695K |
| 代理商： | ADT7460ARQ |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當前第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
REV. 0
ADT7460
–9–
SERIAL BUS INTERFACE
Control of the ADT7460 is carried out using the serial System
Management bus (SMBus). The ADT7460 is connected to this
bus as a slave device, under the control of a master controller.
The ADT7460 has a 7-bit serial bus address. When the device
is powered up with Pin 8 (PWM3/
Address Enable
) high, the
ADT7460 will have a default SMBus address of 0101110 or
0x2E. If more than one ADT7460 is to be used in a system,
then each ADT7460 should be placed in Address Select Mode
by strapping Pin 8 low on power-up. The logic state of Pin 9
then determines the device’s SMBus address.
The device address is sampled and latched on the first valid
SMBus transaction, so any attempted addressing changes made
thereafter will have no immediate effect.
Table I. Address Select Mode
Pin 8 State
Pin 9 State
Low (10 k
to GND)
High (10 k
pull-up)
Don’t Care
Address
0
0
1
0101100 (2Ch)
0101101 (2Dh)
0101110 (2Eh)
(default)
ADT7460
9
8
ADDR_SEL
PWM3/
ADDR_EN
V
CC
10k
ADDRESS = 0x2E
Figure 3. Default SMBus Address = 0x2E
ADT7460
9
8
ADDR_SEL
PWM3/
ADDR_EN
10k
ADDRESS = 0x2C
Figure 4. SMBus Address = 0x2C (Pin 9 = 0)
The facility 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
ADT7460 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 high to low 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 7-bit address (MSB first) plus a R/
W
bit, which deter-
mines the direction of the data transfer, i.e., whether data
will be written to or read from the slave device.
ADT7460
ADDR_SEL
PWM3/
ADDR_EN
ADDRESS = 0x2D
9
8
V
CC
10k
Figure 5. SMBus Address = 0x2D (Pin 9 = 1)
ADT7460
9
8
ADDR_SEL
PWM3/
ADDR_EN
V
CC
10k
DO NOT LEAVE ADDR_EN
UNCONNECTED! CAN
CAUSE UNPREDICTABLE
ADDRESSES
NC
CARE SHOULD BE TAKEN TO ENSURE THAT PIN 8
(PWM3/
ADDR_EN
) IS EITHER TIED HIGH OR LOW. LEAVING PIN 8
FLOATING COULD CAUSE THE ADT7460 TO POWER UP WITH AN
UNEXPECTED ADDRESS.
NOTE THAT IF THE ADT7460 IS PLACED INTO ADDRESS SELECT
MODE, PINS 8 AND 9 CAN BE USED AS THE ALTERNATE FUNC-
TIONS (PWM3, TACH4/
THERM
) ONLY IF THE CORRECT CIRCUIT IS
MUXED IN AT THE CORRECT TIME
Figure 6. Unpredictable SMBus Address if Pin 8
is Unconnected
R/
W
0
SCL
SDA
1
0
1
1
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
ACK. BY
ADT7460
START BY
MASTER
FRAME 1
SERIAL BUS ADDRESS
BYTE
FRAME 2
ADDRESS POINTER REGISTER BYTE
1
9
1
ACK. BY
ADT7460
9
D7
D6
D5
D4
D3
D2
D1
D0
ACK. BY
ADT7460
STOP BY
MASTER
FRAME 3
DATA
BYTE
1
9
SCL (CONTINUED)
SDA (CONTINUED)
Figure 7. Writing a Register Address to the Address Pointer Register, Then Writing Data to the Selected Register
相關PDF資料 |
PDF描述 |
|---|---|
| ADT7461 | 【1∑C Temperature Monitor with Series Resistance Cancellation |
| ADT7461AR | 【1∑C Temperature Monitor with Series Resistance Cancellation |
| ADT7461AR-REEL | 【1∑C Temperature Monitor with Series Resistance Cancellation |
| ADT7461AR-REEL7 | 【1∑C Temperature Monitor with Series Resistance Cancellation |
| ADT7461ARM | 【1∑C Temperature Monitor with Series Resistance Cancellation |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADT7460ARQ-REEL | 功能描述:IC SENSOR TEMP FAN-CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:dBCool® 標準包裝:1 系列:- 功能:溫度監控系統（傳感器） 傳感器類型:內部和外部 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 |
| ADT7460ARQ-REEL7 | 功能描述:IC SENSOR TEMP FAN-CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:dBCool® 標準包裝:1 系列:- 功能:溫度監控系統（傳感器） 傳感器類型:內部和外部 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 |
| ADT7460ARQZ | 功能描述:馬達/運動/點火控制器和驅動器 THERMAL MGMT CNTRLR IC RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| ADT7460ARQZ-R7 | 制造商:ON Semiconductor 功能描述:Temp Sensor Digital Serial (3-Wire) 16-Pin QSOP T/R |
| ADT7460ARQZ-REEL | 功能描述:板上安裝溫度傳感器 THERMAL MGMT CNTRLR IC 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 |
發布緊急采購，3分鐘左右您將得到回復。