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| 型号： | SE97BTP,547 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 11/53页 |
| 文件大小： | 386K |
| 描述： | IC TEMP SENSOR DIMM 8HWSON |
| 产品培训模块： | I²C Bus Fundamentals |
| 特色产品： | NXP - I2C Interface |
| 标准包装： | 1 |
| 功能： | 温度监控系统（传感器），DIMM DDR 内存 |
| 传感器类型： | 内部 |
| 感应温度： | -40°C ~ 125°C |
| 精确度： | ±3°C（最小值） |
| 拓扑： | ADC（三角积分型），比较器，寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 是 |
| 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： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-WSON |
| 包装： | 标准包装 |
| 产品目录页面： | 847 (CN2011-ZH PDF) |
| 其它名称： | 568-5055-6 |
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SE97B_1
?NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 01 27 January 2010
11 of 53
NXP Semiconductors
SE97B
DDR memory module temp sensor with integrated SPD
7.4 Conversion rate
The conversion time is the amount of time required for the ADC to complete a
temperature measurement for the local temperature sensor. The conversion rate is the
inverse of the conversion period which describes the number of cycles the temperature
measurement completes in one secondthe faster the conversion rate, the faster the
temperature reading is updated. The SE97Bs conversion rate is at least 8 Hz or 125 ms.
7.4.1 What temperature is read when conversion is in progress
The SE97B has been designed to ensure a valid temperature is always available. When a
read to the temperature register is initiated through the SMBus, the device checks to see if
the temperature conversion process (Analog-to-Digital conversion) is complete and a new
temperature is available:
" If the temperature conversion process is complete, then the new temperature value is
sent out on the SMBus.
" If the temperature conversion process in not complete, then the previous temperature
value is sent out on the SMBus.
It is possible that while SMBus Master is reading the temperature register, a new
temperature conversion completes. However, this will not affect the data (MSB or LSB)
that is being shifted out. On the next read of the temperature register, the new
temperature value will be shifted out.
7.5 Power-up default condition
After power-on, the SE97B is initialized to the following default condition:
" Starts monitoring local sensor
" EVENT
register is cleared; EVENT
output is pulled HIGH by external pull-ups
" EVENT
hysteresis is defaulted to 0 癈
" Command pointer is defaulted to 00h
" Critical Temp, Alarm Temperature Upper and Lower Boundary Trip register are
defaulted to 0 癈
" Capability register is defaulted to 00F7h for the B-grade and VHV capability,
EVENT
de-asserted and SMBus TIMEOUT between 25 ms and 35 ms enabled.
" Operational mode: comparator
" SMBus register is defaulted to 21h
7.6 Device initialization
SE97B temperature sensors have programmable registers, which, upon power-up, default
to zero. The open-drain EVENT
output is default to being disabled, comparator mode and
active LOW. The alarm trigger registers default to being unprotected. The configuration
registers, upper and lower alarm boundary registers and critical temperature window are
defaulted to zero and need to be programmed to the desired values. SMBus TIMEOUT
feature defaults to being enabled and can be programmed to disable. These registers are
required to be initialized before the device can properly function. Except for the SPD,
which does not have any programmable registers, and does not need to be initialized.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SE97PW | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DDR memory module temp sensor with integrated SPD, 3.3 V |
| SE97PW,118 | 功能描述:板上安装温度传感器 I2C LOCAL +/- 2OC 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 |
| SE97PW-T | 功能描述:板上安装温度传感器 I2C LOCAL +/- 2OC TS +SPD DIMM 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 |
| SE97TK | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DDR memory module temp sensor with integrated SPD, 3.3 V |
| SE97TK,118 | 功能描述:板上安装温度传感器 I2C LOCAL +/- 2OC 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 |
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