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| 型号： | NE1617ADS,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 10/30页 |
| 文件大小： | 305K |
| 描述： | IC TEMP MONITOR 16SSOP |
| 标准包装： | 100 |
| 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： | -55°C ~ 125°C，外部传感器 |
| 精确度： | ±3°C 本地（最大），±5°C 远程（最大） |
| 拓扑： | ADC，多路复用器，寄存器库 |
| 输出类型： | SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 无 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -55°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-SSOP |
| 包装： | 管件 |
| 其它名称： | 935268119112 NE1617ADS NE1617ADS-ND |
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NE1617A
All information provided in this document is subject to legal disclaimers.
?NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 5 20 March 2012
10 of 30
NXP Semiconductors
NE1617A
Temperature monitor for microprocessor systems
commands of registers named WIHL, WILL, WEHL, WELL, RIHL, RILL, REHL, RELL,
accordingly. The POR default values are +127 癈 (0111 1111) for the HIGH limit and
-55 癈 (1100 1001) for the LOW limit.
8.3.6 One-shot command
The one-shot command is not actually a data register as such and a write operation to it
will initiate an ADC conversion. The send byte format of the SMBus, as described later,
with the use of OSHT command (0Fh), is used for this writing operation. In normal
free-running-conversion operation mode of the device, a one-shot command immediately
forces a new conversion cycle to begin. However, if a conversion is in progress when a
one-shot command is received, the command is ignored. In software standby mode the
one-shot command generates a single conversion and comparison cycle and then puts
the device back in its standby mode after the conversion. In hardware standby mode, the
one shot is inhibited.
8.3.7 Status register
The content of the status register reflects condition status resulting from all of these
activities: comparisons between temperature measurements and temperature limits, the
status of ADC conversion, and the hardware condition of the connection of external diode
to the device. Bit assignments and bit functions of this register are listed in Table 8
. This
register can only be read using the command of register named RS. Upon POR, the
status of all flag bits are reset to zero. The status byte is cleared by any successful read of
the status register unless the fault condition persists.
Notice that any one of the fault conditions, except the conversion busy, also introduces an
Alert interrupt to the SMBus that will be described in Section 8.3.8
. Also, whenever a
one-shot command is executed, the status byte should be read after the conversion is
completed, which is about 170 ms after the one-shot command is sent.
[1] These flags stay HIGH until the status register is read or POR is activated.
[2] This flag stays HIGH until POR is activated.
8.3.8 Alert interrupt
The ALERT
output is used to signal Alert interruption from the device to the SMBus and is
active LOW. Because this output is an open-drain output, a pull-up resistor (10 kW typical)
to V
DD
is required, and slave devices can share a common interrupt line on the same
SMBus. An Alert interrupt is asserted by the device whenever any one of the fault
conditions, as described in Section 8.3.7
Status register
, occurs: measured temperature
equals or exceeds corresponding temp limits, the remote diode is physically disconnected
from the device pins. Alert interrupt signal is latched and can only be cleared by reading
Table 8.
Status register bit assignment
Bit
Symbol
POR state
Function
7 (MSB)
BUSY
n/a
HIGH when the ADC is busy converting
6
IHLF
[1]
0
HIGH when the internal temperature high limit has tripped
5
ILLF
[1]
0
HIGH when the internal temperature low limit has tripped
4
EHLF
[1]
0
HIGH when the external temperature high limit has tripped
3
ELLF
[1]
0
HIGH when the external temperature low limit has tripped
2
OPEN
[2]
0
HIGH when the external diode is opened
1 to 0
-
0
reserved
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相关代理商/技术参数 |
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| NE1617DS | 功能描述:板上安装温度传感器 I2C LOC +/- 2OC AND REM +/- 3OC TS 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 |
| NE1617DS,112 | 功能描述:板上安装温度传感器 I2C LOC +/- 2OC AND 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 |
| NE1617DS,118 | 功能描述:板上安装温度传感器 I2C LOC +/- 2OC AND REM +/- 3OC TS 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 |
| NE1618 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Temperature monitor for microprocessor systems |
| NE1618DS | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Temperature monitor for microprocessor systems |
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