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| 型号： | ADM1027ARQ-REEL |
| 厂商： | ON Semiconductor |
| 文件页数： | 43/56页 |
| 文件大小： | 1822K |
| 描述： | IC REMOTE THERMAL CTRLR 24-QSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi Product Discontinuation Notice 25/Aug/2008 |
| 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： | 0°C ~ 105°C，外部传感器 |
| 精确度： | ±1°C |
| 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： | 0°C ~ 105°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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REV. A
ADM1027
43
Table VIII. Current PWM Duty Cycle Registers (Power-On Default = 0xFF)
Register Address
R/W
Description
0x30
Read/Write
PWM1 Current Duty Cycle (0% to 100% duty cycle = 0x00 to 0xFF)
0x31
Read/Write
PWM2 Current Duty Cycle (0% to 100% duty cycle = 0x00 to 0xFF)
0x32
Read/Write
PWM3 Current Duty Cycle (0% to 100% duty cycle = 0x00 to 0xFF)
These registers reflect the PWM duty cycle driving each fan at any given time. When in automatic fan speed control mode, the ADM1027
reports the PWM duty cycles back through these registers. The PWM duty cycle values will vary according to temperature in
automatic fan speed control mode. During fan startup, these registers report back 0x00. In software mode, the PWM duty cycle
outputs can be set to any duty cycle value by writing to these registers.
Table IX. Register 0x40 Configuration Register 1 (Power-On Default = 0x00)
Bit
Name
R/W
Description
<0>
STRT
Read/Write
Logic 1 enables monitoring and PWM control outputs based on the limit settings pro-
grammed. Logic 0 disables monitoring and PWM control based on the default power-up
limit settings. Note that the limit values programmed are preserved even if a LOGIC 0 is
written to this bit and the default settings are enabled. This bit becomes read-only and
cannot be changed once Bit 1 (lock bit) has been written. All limit registers should be
programmed by BIOS before setting this bit to 1 (lockable).
<1>
LOCK
Write Once
Logic 1 locks all limit values to their current settings. Once this bit is set, all lockable
registers become read-only and cannot be modified until the ADM1027 is powered down
and powered up again. This prevents rogue programs such as viruses from modifying
critical system limit settings (lockable).
<2>
RDY
Read-Only
This bit gets set to 1 by the ADM1027 to indicate that the device is fully powered up
and ready to begin systems monitoring.
<3>
FSPD
Read/Write
When set to 1, this runs all fans at full speed. Power-on default = 0. This bit does not get
locked at any time.
<4>
V ?/SPAN> I
Read/Write
BIOS should set this bit to 1 when the ADM1027 is configured to measure current
from an ADI ADOPT
?/DIV>
VRM controller and measure the CPUs core voltage. This will
allow monitoring software to display CPU watts usage (lockable).
<5>
FSPDIS
Read/Write
Logic 1 disables fan spin-up for two TACH pulses. Instead, the PWM outputs will go
high for the entire fan spin-up timeout selected.
<6>
TODIS
Read/Write
When this bit is set to 1, the SMBus timeout feature is disabled. This allows the ADM1027
to be used with SMBus controllers that cannot handle SMBus timeouts (lockable).
<7>
V
CC
Read/Write
When this bit is set to 1, the ADM1027 rescales its V
CC
pin to measure a 5 V supply.
If this bit is 0, the ADM1027 measures V
CC
as a 3.3 V supply (lockable).
Rev. 2 | Page 3 of 56 | www.onsemi.com
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| ADM1027ARQ-REEL7 | 功能描述:IC REMOTE THERMAL CTRLR 24-QSOP RoHS:否 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 |
| ADM1027ARQSMSC | 功能描述:IC SENSOR TEMP/FAN CTRL 制造商:analog devices inc. 系列:* 零件状态:上次购买时间 标准包装:1 |
| ADM1027ARQZ | 功能描述:板上安装温度传感器 VOLT THRM MGMT CNTRLR IC 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 |
| ADM1027ARQZ-REEL | 功能描述:板上安装温度传感器 VOLT THRM MGMT CNTRLR IC 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 |
| ADM1027ARQZ-REEL7 | 功能描述:IC REMOTE THERMAL CTRLR 24QSOP 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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