ADT7463
http://onsemi.com
44
Table 66. PWM MIN DUTY CYCLE REGISTERS (Note 1)
Register Address
R/W
Description
PowerOn Default
0x64
R/W
PWM1 Min Duty Cycle
0x80 (50% Duty Cycle)
0x65
R/W
PWM2 Min Duty Cycle
0x80 (50% Duty Cycle)
0x66
R/W
PWM3 Min Duty Cycle
0x80 (50% Duty Cycle)
1. These registers become readonly when the ADT7463 is in automatic fan control mode.
Table 67. PWM MIN DUTY CYCLE REGISTER BITS
Bit
Name
R/W
Description
<7:0>
PWM Duty Cycle
R/W
These bits define the PWM
MIN
duty cycle for PWMx.
0x00 = 0% Duty Cycle (Fan Off)
0x40 = 25% Duty Cycle
0x80 = 50% Duty Cycle
0xFF = 100% Duty Cycle (Fan Full Speed)
Table 68. T
MIN
REGISTERS (Note 1)
Register Address
R/W
Description (Note 2)
PowerOn Default
0x67
R/W
Remote 1 Temperature T
MIN
0x5A (90癈)
0x68
R/W
Local Temperature T
MIN
0x5A (90癈)
0x69
R/W
Remote 2 Temperature T
MIN
0x5A (90癈)
1. These registers become readonly when the Configuration Register 1 Lock bit is set. Further attempts to write to these registers have no
effect.
2. These are the T
MIN
registers for each temperature channel. When the temperature measured exceeds T
MIN
, the appropriate fan runs at
minimum speed and increase with temperature according to T
RANGE
.
Table 69. THERM
LIMIT REGISTERS (Note 1)
Register Address
R/W
Description (Note 2)
PowerOn Default
0x6A
R/W
Remote 1 THERM
Limit
0x64 (100癈)
0x6B
R/W
Local THERM
Limit
0x64 (100癈)
0x6C
R/W
Remote 2 THERM
Limit
0x64 (100癈)
1. This register becomes readonly when the Configuration Register 1 Lock bit is set to 1. Further attempts to write to this register have no effect.
2. If any temperature measured exceeds its THERM
limit, all PWM outputs drive their fans at 100% duty cycle. This is a failsafe mechanism
incorporated to cool the system in the event of a critical overtemperature. It also ensures some level of cooling in the event that software
or hardware locks up. If set to 0x80, this feature is disabled. The PWM output remains at 100% until the temperature drops below THERM
Limit Hysteresis. If the THERM
pin is programmed as an output, exceeding these limits by 0.25癈 can cause the THERM
pin to assert low
as an output.
Table 70. TEMPERATURE HYSTERESIS REGISTERS (Note 1)
Register Address
R/W
Description (Note 2)
PowerOn Default
0x6D
R/W
Remote 1 Local Temperature Hysteresis
0x44
0x6E
R/W
Remote 2 Temperature Hysteresis
0x40
1. This register becomes readonly when the Configuration Register 1 Lock bit is set to 1. Further attempts to write to this register have no effect.
2. Each 4bit value controls the amount of temperature hysteresis applied to a particular temperature channel. Once the temperature for that
channel falls below its T
MIN
value, the fan remains running at PWM
MIN
duty cycle until the temperature = T
MIN
Hysteresis. Up to 15癈 of
hysteresis may be assigned to any temperature channel. The hysteresis value chosen also applies to that temperature channel if its THERM
limit is exceeded. The PWM output being controlled goes to 100% if the THERM
limit is exceeded and remains at 100% until the temperature
drops below THERM
Hysteresis. For acoustic reasons, it is recommended that the hysteresis value not be programmed less than 4癈.
Setting the hysteresis value lower than 4癈 causes the fan to switch on and off regularly when the temperature is close to T
MIN.
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
ADT7476AARQZ-R
IC REMOTE THERMAL CTLR 24QSOP
ADT7481ARMZ-1RL
IC SENSOR TEMP 2CH ALARM 10MSOP
ADT7482ARMZ-REEL
IC SENSOR TEMP 2CH ALARM 10MSOP
ADT7485AARMZ-R
IC TEMP/VOLT DGL SENS SST 10MSOP
ADT7486AARMZ-RL
IC TEMP SENS DGTL 2CH SST 10MSOP
ADT7488AARMZ-RL
IC TEMP/VOLT DGTL W/SST 10MSOP
ADT7518ARQZ
IC SENSOR TEMP QD ADC/DAC 16QSOP
AT30TS00-MAH-T
SENSOR DGTL TEMP I2C/SMBUS 8WDFN
相关代理商/技术参数
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
ADT7466ARQZ-RL7
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
ADT7466ZEVB
功能描述:BOARD EVALUATION ADT7466 RoHS:是 类别:编程器，开发系统 >> 过时/停产零件编号 系列:dBCool® 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
ADT7467
制造商:AD 制造商全称:Analog Devices 功能描述:dBCool Remote Thermal Monitor and Fan Controller