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參數資料
| 型號： | SE98ATP,547 |
| 廠商： | NXP Semiconductors |
| 文件頁數： | 9/43頁 |
| 文件大小： | 849K |
| 描述： | IC TEMP SENSOR DDR 8-HWSON |
| 產品培訓模塊： | I²C Bus Fundamentals |
| 標準包裝： | 1 |
| 功能： | 溫度監控系統（傳感器） |
| 傳感器類型： | 內部 |
| 感應溫度： | -40°C ~ 125°C |
| 精確度： | ±4°C（最小值） |
| 拓撲： | ADC（三角積分型），寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報： | 是 |
| 輸出風扇： | 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 |
| 供應商設備封裝： | 8-WSON |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 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
9 of 43
NXP Semiconductors
SE98A
DDR memory module temp sensor, 1.7 V to 3.6 V
7.3.2.2 Critical trip
The T
th(crit)
temperature setting is programmed in the Critical Alarm Trip register (04h) as
modified by hysteresis as programmed in the Configuration register. When the
temperature reaches the critical temperature value in this register (and EVENT
is
enabled), the EVENT
output asserts and cannot be de-asserted until the temperature
drops below the critical temperature threshold. The EVENT
cannot be cleared through the
Clear EVENT
bit (CEVNT) or SMBus ALERT.
The Critical Alarm Trip should always be set above the Upper Boundary Alarm Trip.
" Advisory notification:
NXP device: Requires one conversion cycle (125 ms) after setting the Alarm
Window before comparing the alarm limit with temperature register to ensure that
there is correct data in the temperature register before comparing with the Alarm
Window and operating EVENT
output.
Competitor devices: Compares the Alarm Window with temperature register at any
time, so they get the EVENT
output immediately when new T
th(crit)
and
EVENT
output are set at the same time.
Work-around: Wait at least 125 ms before enabling EVENT
output (EOCTL = 1).
Intel will change Nehalem BIOS so that T
th(crit)
is set for more than 125 ms before
EVENT
output is enabled and Event value is checked.
1. Set T
th(crit)
.
2. Doing something else (make sure that exceeds 125 ms).
3. Enable the EVENT
output (EOCTL = 1).
4. Wait 20 約.
5. Read Event value.
SE98B will compare Alarm Window and temperature register immediately after
setting.
7.3.3 Event operation modes
7.3.3.1 Comparator mode
In comparator mode, the EVENT
output behaves like a window-comparator output that
asserts when the temperature is outside the window (e.g., above the value programmed in
the Upper Boundary Alarm Trip register or below the value programmed in the Lower
Boundary Alarm Trip register or above the Critical Alarm Trip resister if T
th(crit)
only is
selected). Reads/writes on the registers do not affect the EVENT
output in comparator
mode. The EVENT
signal remains asserted until the temperature goes inside the alarm
window or the window thresholds are reprogrammed so that the current temperature is
within the alarm window.
The comparator mode is useful for thermostat-type applications, such as turning on a
cooling fan or triggering a system shutdown when the temperature exceeds a safe
operating range.
7.3.3.2 Interrupt mode
In interrupt mode, EVENT
asserts whenever the temperature crosses an alarm window
threshold. After such an event occurs, writing a 1 to the Clear EVENT
bit in the
configuration register de-asserts the EVENT
output until the next trigger condition occurs.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能: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: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能: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: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
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