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參數(shù)資料
型號: SE98ATP,547
廠商: NXP Semiconductors
文件頁數(shù): 11/43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:
輸出風(fēng)扇:
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
SE98A_4
?NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04  25 November 2009
11 of 43
NXP Semiconductors
SE98A
DDR memory module temp sensor, 1.7 V to 3.6 V
7.5  Power-up default condition
After power-on, the SE98A is initialized to the following default condition:
" Starts monitoring local sensor
"  EVENT
 register is clearedEVENT
 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 0037h for the B-grade and VHV capability
"  Operational mode: comparator
"  SMBus register is defaulted to 00h
7.6  Device initialization
SE98A 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.
Table 4
 shows the default values and the example value to be programmed to these
registers.
 
Table 4.
Registers to be initialized
Register
Default value
Example value
Description
01h
0000h
0209h
Configuration register
"  hysteresis = 1.5 ?/SPAN>C
"  EVENT
 output = Interrupt mode
"  EVENT
 output is enabled
02h
0000h
0550h
Upper Boundary Alarm Trip register = 85 癈
03h
0000h
1F40h
Lower Boundary Alarm Trip register = 20 癈
04h
0000h
05F0h
Critical Alarm Trip register = 95 癈
22h
0000h
0000h
SMBus register = no change
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