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參數(shù)資料
| 型號： | SE98ATP,547 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 6/43頁 |
| 文件大小： | 849K |
| 描述： | IC TEMP SENSOR DDR 8-HWSON |
| 產(chǎn)品培訓(xùn)模塊： | I²C Bus Fundamentals |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 功能： | 溫度監(jiān)控系統(tǒng)（傳感器） |
| 傳感器類型： | 內(nèi)部 |
| 感應(yīng)溫度： | -40°C ~ 125°C |
| 精確度： | ±4°C（最小值） |
| 拓?fù)洌?/td> | ADC（三角積分型），寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報(bào)： | 是 |
| 輸出風(fēng)扇： | 是 |
| 電源電壓： | 1.7 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-WFDFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 8-WSON |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 847 (CN2011-ZH PDF) |
| 其它名稱： | 568-4731-6 |
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SE98A_4
?NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 25 November 2009
6 of 43
NXP Semiconductors
SE98A
DDR memory module temp sensor, 1.7 V to 3.6 V
7.3 EVENT
output condition
The EVENT
output indicates conditions such as the temperature crossing a predefined
boundary. The EVENT
modes are very configurable and selected using the configuration
register (CONFIG). The interrupt mode or comparator mode is selected using CONFIG[0],
using either TCRIT/UPPER/LOWER or TCRIT only temperature bands (CONFIG[2]) as
modified by hysteresis (CONFIG[10:9]). The UPPER/LOWER (CONFIG[6]) and TCRIT
(CONFIG[7]) bands can be locked. Figure 6
shows an example of the measured
temperature versus time, with the corresponding behavior of the EVENT
output in each of
these modes.
Upon device power-up, the default condition for the EVENT
output is high-impedance to
prevent spurious or unwanted alarms, but can be later enabled (CONFIG[3]). EVENT
output polarity can be set to active HIGH or active LOW (CONFIG[1]). EVENT
status can
be read (CONFIG[4]) and cleared (CONFIG[5]).
" Advisory notification:
NXP device: After power-up, bit 3 (1) and bit 2 or bit 0 (leave as 0 or 1) can be set
at the same time (e.g., in same byte) but once bit 3 is set (1) then changing bit 2 or
bit 0 has no effect on the device operation.
Competitor device: Does not require that bit 3 be cleared (e.g., set back to (0))
before changing bit 2 or bit 0.
Work-around: In order to change bit 2 or bit 0 once bit 3 (1) is set, bit 3 (0) must be
cleared in one byte and then change bit 2 or bit 0 and reset bit 3 (1) in the next
byte.
SE98B will allow bit 2 or bit 0 to be changed even if bit 3 is set.
If the device enters Shutdown mode (CONFIG[8]) with asserted EVENT
output, the output
remains asserted during shutdown.
7.3.1 EVENT
pin output voltage levels and resistor sizing
The EVENT
open-drain output is typically pulled up to a voltage level from 0.9 V to 3.6 V
with an external pull-up resistor, but there is no real lower limit on the pull-up voltage for
the EVENT
pin since it is simply an open-drain output. It could be pulled up to 0.1 V and
would not affect the output. From the system perspective, there will be a practical limit.
That limit will be the voltage necessary for the device monitoring the interrupt pin to detect
a HIGH on its input. A possible practical limit for a CMOS input would be 0.4 V. Another
thing to consider is the value of the pull-up resistor. When a low supply voltage is applied
to the drain (through the pull-up resistor) it is important to use a higher value pull-up
resistor, to allow a larger maximum signal swing on the EVENT
pin.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SE98PW | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:SO-DIMM SMBus/I2C-bus temperature sensor |
| SE98PW,118 | 功能描述:板上安裝溫度傳感器 I2C LOCAL +/- 2OC RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| SE98PW-T | 功能描述:板上安裝溫度傳感器 I2C LOCAL +/- 2OC TS DIMM RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| SE98TK | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:DDR memory module temp sensor, 3.3 V |
| SE98TK,118 | 功能描述:板上安裝溫度傳感器 I2C LOCAL +/- 2OC RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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