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| 型号： | ADT7463ARQZ-REEL |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/50页 |
| 文件大小： | 726K |
| 描述： | IC REMOTE THERMAL CTRLR 24-QSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi QSOP 24ld Pkg (MSL) Change 17/Jun/2010 |
| 标准包装： | 2,500 |
| 系列： | dBCool® |
| 功能： | 风扇控制，温度监控器 |
| 传感器类型： | 内部和外部 |
| 感应温度： | -40°C ~ 120°C，外部传感器 |
| 精确度： | ±1.5°C（最小值） |
| 拓扑： | ADC，比较器，风扇速度计数器，多路复用器，寄存器库 |
| 输出类型： | SMBus? |
| 输出警报： | 无 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 120°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-QSOP |
| 包装： | 带卷 (TR) |
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ADT7463
http://onsemi.com
9
Functional Description
General Description
The ADT7463 is a complete systems monitor and
multiple fan controller for any system requiring monitoring
and cooling. The device communicates with the system via
a serial system management bus. The serial bus controller
has an optional address line for device selection (Pin 14), a
serial data line for reading and writing addresses and data
(Pin 1), and an input line for the serial clock (Pin 2). All
control and programming functions of the ADT7463 are
performed over the serial bus. In addition, two of the pins
can be reconfigured as an SMBALERT
output to indicate
outoflimit conditions.
Measurement Inputs
The device has six measurement inputs, four for voltage
and two for temperature. It can also measure its own supply
voltage and can measure ambient temperature with its
onchip temperature sensor.
Pins 20 through 23 are analog inputs with onchip
attenuators, configured to monitor 5 V, 12 V, 2.5 V, and the
processor core voltage (2.25 V input), respectively.
Power is supplied to the chip via Pin 4, and the system also
monitors V
CC
through this pin. In PCs, this pin is normally
connected to a 3.3 V standby supply. This pin can, however,
be connected to a 5 V supply and monitor it without
overranging.
Remote temperature sensing is provided by the D1?and
D2? inputs, to which diodeconnected, external
temperaturesensing transistors, such as a 2N3904 or CPU
thermal diode, may be connected.
The ADC also accepts input from an onchip band gap
temperature sensor that monitors system ambient
temperature.
Sequential Measurement
When the ADT7463 monitoring sequence is started, it
cycles sequentially through the measurement of analog
inputs and the temperature sensors. Measured values from
these inputs are stored in value registers. These can be read
out over the serial bus or can be compared with programmed
limits stored in the limit registers. The results of
outoflimit comparisons are stored in the status registers,
which can be read over the serial bus to flag outoflimit
conditions.
Processor Voltage ID
Five digital inputs (VID0 to VID5 Pins 5 to 8, 19, and
21) read the processor voltage ID code and store it in the VID
register, from which it can be read out by the management
system over the serial bus. The VID code monitoring
function is compatible with both VRM9.x and future
VRM10 solutions. Additionally, an SMBALERT
can be
generated to flag a change in VID code.
ADT7463 Address Selection
Pin 13 is the dualfunction PWM3/ADDRESS ENABLE
pin. If Pin 13 is pulled low on powerup, the ADT7463
reads the state of Pin 14 (TACH4/ADDRESS SELECT/
THERM
pin) to determine the ADT7463s slave address. If
Pin 13 is high on powerup, then the ADT7463 defaults to
the SMBus slave Address 0x2E. This function is described
in more detail later.
Internal Registers of the ADT7463
A brief description of the ADT7463s principal internal
registers is given below. More detailed information on the
function of each register is given in Tables X4 to X42.
Configuration Registers
The configuration registers provide control and
configuration of the ADT7463, including alternate pinout
functionality.
Address Pointer Register
This register contains the address that selects one of the
other internal registers. When writing to the ADT7463, the
first byte of data is always a register address, which is written
to the address pointer register.
Status Registers
These registers provide the status of each limit
comparison and are used to signal outoflimit conditions
on the temperature, voltage, or fan speed channels. If Pin 10
or Pin 22 is configured as SMBALERT
, then this pin asserts
low whenever a status bit gets set.
Interrupt Mask Registers
These registers allow each interrupt status event to be
masked when Pin 10 or Pin 22 is configured as an
SMBALERT
output.
VID Register
The status of the VID0 to VID5 pins of the processor can
read from this register. VID code changes can also generate
SMBALERT
interrupts.
Value and Limit Registers
The results of analog voltage inputs, temperature, and fan
speed measurements are stored in these registers, along with
their limit values.
Offset Registers
These registers allow each temperature channel reading to
be offset by a twos complement value written to these
registers.
T
MIN
Registers
These registers program the starting temperature for each
fan under automatic fan speed control.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADT7463ARQZ-REEL7 | 功能描述:IC REMOTE THERMAL CTRLR 24-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:dBCool® 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
| ADT7466 | 制造商:AD 制造商全称:Analog Devices 功能描述:dBCool Remote Thermal Controller and Voltage Monitor |
| ADT7466ARQZ | 功能描述:板上安装温度传感器 RMT THRM CTR VLT MON RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| ADT7466ARQZ-REEL | 功能描述:板上安装温度传感器 RMT THRM CTR VLT MON RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| ADT7466ARQZ-REEL7 | 功能描述:IC REMOTE THERMAL CTRLR 16QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:dBCool® 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
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