參數(shù)資料
型號(hào)： ADM1031ARQ
廠商： ON SEMICONDUCTOR
元件分類(lèi)： 溫度/濕度傳感器
英文描述： DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT
封裝： MO-137AB, QSOP-16
文件頁(yè)數(shù)： 2/35頁(yè)
文件大小： 368K
代理商： ADM1031ARQ
ADM1031
Rev. 3 | Page 10 of 35 | www.onsemi.com
Table 18 through Table 33.
Configuration Register
This register controls and configures 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 ADM1031, 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
Theses registers store the results of temperature and fan speed
measurements, along with their limit values.
Fan Speed Configuration Register
This register is used to program the PWM duty cycle for each
fan.
Offset Registers
These registers allow the temperature channel readings to be
offset by a 5-bit twos complement value written to these
registers. These values are automatically 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°C from a temperature reading.
Fan Characteristics Registers
These registers are used to select the spin-up time, PWM
frequency, and speed range for the fans used.
THERM Limit Registers
These registers contain the temperature values at which
THERM is asserted.
TMIN/TRANGE Registers
These registers are read/write registers that hold the minimum
temperature value below which the fan does not run when the
device is in automatic fan speed control mode. These registers
also hold the temperature range value that defines the range
over which auto fan control is provided, and hence determines
the temperature at which the fan is run at full speed.
SERIAL BUS INTERFACE
Control of the ADM1031 is carried out via the SMBus. The
ADM1031 is connected to this bus as a slave device, under the
control of a master device, for example, the 810 chipset.
The ADM1031 has a 7-bit serial bus address. When the device
is powered up, it does 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 VCC, 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 has no effect until the device is powered off, then on
again.
Table 5. ADD Pin Truth Table
ADD Pin
A1
A0
GND
0
No Connect
1
0
VCC
0
1
If ADD is left open-circuit, then the default address is 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 ADM1031 is used in a
system.
Serial Bus Protocol
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 follows. 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 an R/W bit
that determines the direction of the data transfer, that is,
whether data is 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, then the
master writes to the slave device. If the R/W bit is a 1, then
the master reads 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 during the high period, as a low-to-high transition
when the clock is high can be interpreted as a stop signal.
The number of data bytes that can be transmitted over the
serial bus in a single read or write operation is limited only
by what the master and slave devices can handle.
3.
When all data bytes have been read or written, stop
conditions are established. In write mode, the master pulls
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參數(shù)描述
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(lèi)別:集成電路 (IC) >> PMIC - 熱管理 系列:- 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 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
ADM1031ARQ-REEL7 功能描述:IC SENSOR 2-TEMP/FAN CTRL 16QSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 熱管理 系列:- 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 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
ADM1031ARQZ 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 2 CH TDM PWM FAN CTRL IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
ADM1031ARQZ-R7 功能描述:IC SENSOR 2TEMP/FAN CTRL 16QSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱管理 系列:- 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 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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