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| 型号： | ADT7473ARQZ-1R7 |
| 厂商： | ON Semiconductor |
| 文件页数： | 20/73页 |
| 文件大小： | 0K |
| 描述： | IC THERM MON FAN CTLR 16-QSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi Product Discontinuation 30/Sept/2011 |
| 标准包装： | 1,000 |
| 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 ~ 125°C |
| 精确度： | ±2.5% |
| 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 ~ 3.6 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
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ADT7473
For applications where the monitoring cycle time is
important, it can easily be calculated. The total number of
channels measured is:
? One Dedicated Supply Voltage Input (V CCP )
? Supply Voltage (V CC Pin)
? Local Temperature
Table 27. INTERRUPT STATUS REGISTER 1
(REG. 0X41)
Bit Mnemonic Description
7 OOL 1 denotes a bit in Interrupt Status
Register 2 is set and Interrupt Status
Register 2 should be read.
? Two Remote Temperatures
As mentioned previously, the ADC performs round-robin
conversions. The total monitoring cycle time for averaged
voltage and temperature monitoring is 146 ms. The total
monitoring cycle time for voltage and temperature
monitoring with averaging disabled is 19 ms. The ADT7473/
ADT7473 ? 1 is a derivative of the ADT7467. As a result, the
total conversion time in the ADT7473/ ADT7473 ? 1 is the
same as the total conversion time of the ADT7467, even
though the ADT7473/ADT7473 ? 1 has fewer monitored
channels.
Fan TACH measurements are made in parallel and are not
synchronized with the analog measurements in any way.
6
5
4
3
2
1
0
R2T
LT
R1T
?
V CC
V CCP
?
1 indicates that the Remote 2
Temperature High or Low Limit has
been exceeded.
1 indicates that the Local Temperature
High or Low Limit has been exceeded.
1 indicates that the Remote 1
Temperature High or Low Limit has
been exceeded.
Unused
1 indicates that the V CC High or Low
Limit has been exceeded.
1 indicates that the V CCP High or Low
Limit has been exceeded.
Unused
Interrupt Status Registers
The results of limit comparisons are stored in Interrupt
Table 28. INTERRUPT STATUS REGISTER 2
(REG. 0X42)
Status Register 1 and Interrupt Status Register 2. The status
register bit for each channel reflects the status of the last
measurement and limit comparison on that channel. If a
measurement is within limits, the corresponding status
register bit is cleared to 0. If the measurement is out of limits,
the corresponding status register bit is set to 1.
The state of the various measurement channels can be
polled by reading the status registers over the serial bus. In
Bit 7 (OOL) of Interrupt Status Register 1 (Reg. 0x41), a 1
means an out-of-limit event has been flagged in Interrupt
Status Register 2. This means the user needs only to read
Interrupt Status Register 2 when this bit is set. Alternatively,
Pin 5 or Pin 9 on the ADT7473 can be configured as an
SMBALERT output, while only Pin 9 can be configured to
be an SMBALERT on the ADT7473 ? 1. This automatically
notifies the system supervisor of an out-of-limit condition.
Reading the status registers clears the appropriate status bit
as long as the error condition that caused the interrupt has
cleared. Status register bits (except OVT) are sticky.
Whenever a status bit is set, indicating an out-of-limit
Bit
7
6
5
4
3
2
1
0
Mnemonic
D2
D1
F4P
FAN3
FAN2
FAN1
OVT
THERM
Limit Latch
Description
1 indicates an open or short on
D2+/D2 ? inputs.
1 indicates an open or short on
D1+/D1 ? inputs.
1 indicates that Fan 4 has dropped
below the minimum speed. Alternatively,
indicates that THERM timer limit has
been exceeded if the THERM timer
function is used.
1 indicates that Fan 3 has dropped
below the minimum speed.
1 indicates that Fan 2 has dropped
below the minimum speed.
1 indicates that Fan 1 has dropped
below the minimum speed.
1 indicates that a THERM
overtemperature limit has been
exceeded.
1 indicates that a Remote Channel 2
latch.
condition, it remains set even if the event that caused it has
gone away (until read). The only way to clear the status bit
is to read the status register after the event has gone away.
Interrupt mask registers (Register 0x74 and Register 0x75)
allow individual interrupt sources to be masked from
causing an SMBALERT. However, if one of these masked
interrupt sources goes out of limit, its associated status bit is
SMBALERT Interrupt Behavior
The ADT747/ADT7473 ? 1 can be polled for status, or an
SMBALERT interrupt can be generated for out-of-limit
conditions. It is important to note how the SMBALERT
output and status bits behave when writing interrupt handler
software.
set in the interrupt status registers. OVT clears
automatically.
http://onsemi.com
20
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相关代理商/技术参数 |
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| ADT7473ARQZ-1REEL | 功能描述:IC THERM MON FAN CTRLR 16-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 |
| ADT7473ARQZ-1REEL7 | 功能描述:IC THERM MON FAN CTRLR 16-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 |
| ADT7473ARQZ-1RL | 功能描述:板上安装温度传感器 FAN CNTRLR/INT 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 |
| ADT7473ARQZ-REEL | 功能描述:板上安装温度传感器 FAN CNTRLR/INT 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 |
| ADT7473ARQZ-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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