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參數(shù)資料
| 型號： | ADM1030ARQZ-RL7 |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 7/30頁 |
| 文件大小： | 327K |
| 描述： | IC SNSR TEMP/FAN PWM CTRL 16QSOP |
| 產(chǎn)品變化通告： | MFG CHG Notification ADI to ON Semi Product Obsolescence 11/Feb/2009 |
| 標準包裝： | 1,000 |
| 功能： | 風扇控制，溫度監(jiān)控器 |
| 傳感器類型： | 內(nèi)部和外部 |
| 感應溫度： | 0°C ~ 100°C，外部傳感器 |
| 精確度： | ±1°C，±1°C（最小值） |
| 拓撲： | ADC，比較器，多路復用器，寄存器庫 |
| 輸出類型： | SMBus? |
| 輸出警報： | 是 |
| 輸出風扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 100°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-QSOP |
| 包裝： | 帶卷 (TR) |
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ADM1030
http://onsemi.com
7
General Description
The ADM1030 is a temperature monitor and PWM fan
controller for microprocessor-based systems. The device
communicates with the system via a serial System
Management Bus. The serial bus controller has a hardwired
address pin for device selection (Pin 13), a serial data line for
reading and writing addresses and data (Pin 15), and an
input line for the serial clock (Pin 16). All control and
programming functions of the ADM1030 are performed
over the serial bus. The device also supports the SMBus
Alert Response Address (ARA) function.
Internal Registers of the ADM1030
A brief description of the ADM1030s principal internal
registers is given below. More detailed information on the
function of each register is given in Table 16 to Table 30.
Configuration Register
Provides control and configuration of various functions
on the device.
Address Pointer Register
This register contains the address that selects one of the
other internal registers. When writing to the ADM1030, the
first byte of data is always a register address, which is written
to the Address Pointer Register.
Status Registers
These registers provide status of each limit comparison.
Value and Limit Registers
The results of temperature and fan speed measurements
are stored in these registers, along with their limit values.
Fan Speed Config Register
This register is used to program the PWM duty cycle for
the fan.
Offset Registers
Allows the temperature channel readings to be offset by
a 5-bit twos complement value written to these registers.
These values will automatically be added to the temperature
values (or subtracted from if negative). This allows the
systems designer to optimize the system if required, by
adding or subtracting up to 15癈 from a temperature
reading.
Fan Characteristics Register
This register is used to select the spin-up time, PWM
frequency, and speed range for the fan used.
THERM Limit Registers
These registers contain the temperature values at which
THERM
will be asserted.
T
MIN
/T
RANGE
Registers
These registers are read/write registers that hold the
minimum temperature value below which the fan will not
run when the device is in Automatic Fan Speed Control
Mode. These registers also hold the values defining the
range over that auto fan control will be provided, and hence
determines the temperature at which the fan will run at full
speed.
Serial Bus Interface
Control of the ADM1030 is carried out via the SMBus.
The ADM1030 is connected to this bus as a slave device,
under the control of a master device, e.g., the 810 chipset.
The ADM1030 has a 7-bit serial bus address. When the
device is powered up, it will do so with a default serial bus
address. The five MSBs of the address are set to 01011, the
two LSBs are determined by the logical state of Pin 13
(ADD). This is a three-state input that can be grounded,
connected to V
CC
, or left open-circuit to give three different
addresses. The state of the ADD pin is only sampled at
power-up, so changing ADD with power on will have no
effect until the device is powered off, then on again.
Table 5. ADD PIN TRUTH TABLE
ADD Pin
A1
A0
GND
0
0
No Connect
1
0
V
CC
0
1
If ADD is left open-circuit, the default address will be
0101110.
The facility to make hardwired changes at the ADD pin
allows the user to avoid conflicts with other devices sharing
the same serial bus, for example, if more than one ADM1030
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 8 bits,
consisting of a 7-bit address (MSB first) plus an
R/W
bit that 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
clock pulse, known as the Acknowledge Bit. All
other devices on the bus now remain idle while the
selected device waits for data to be read from or
written to it. If the R/W
bit is a 0, the master will
write to the slave device. If the R/W
bit is a 1, the
master will read from the slave device.
2. Data is sent over the serial bus in sequences of
nine clock pulses, eight bits of data followed by an
Acknowledge Bit from the slave device.
Transitions on the data line must occur during the
low period of the clock signal and remain stable
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相關代理商/技術(shù)參數(shù) |
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|---|---|
| ADM1031 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Intelligent Temperature Monitor and Dual PWM Fan Controller |
| ADM1031ARQ | 功能描述:IC SENSOR 2-TEMP/FAN CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝: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 |
| ADM1031ARQ-ND | 制造商:ON Semiconductor 功能描述: |
| ADM1031ARQ-REEL | 功能描述:IC SENSOR 2-TEMP/FAN CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝: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 |
| ADM1031ARQ-REEL7 | 功能描述:IC SENSOR 2-TEMP/FAN CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝: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 |
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