參數(shù)資料
型號(hào): SE98ATP,547
廠商: NXP Semiconductors
文件頁(yè)數(shù): 5/43頁(yè)
文件大?。?/td> 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(kù)
輸出類型: I²C?/SMBus?
輸出警報(bào):
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(yè)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
5 of 43
NXP Semiconductors
SE98A
DDR memory module temp sensor, 1.7 V to 3.6 V
7.   Functional description
7.1  Serial bus interface
The SE98A uses the 2-wire serial bus (I
2
C-bus/SMBus) to communicate with a host
controller. The serial bus consists of a clock (SCL) and data (SDA) signals. The device
can operate on either the I
2
C-bus Standard/Fast mode or SMBus. The I
2
C-bus
Standard-mode is defined to have bus speeds from 0 Hz to 100 kHz, I
2
C-bus Fast-mode
from 0 Hz to 400 kHz, and the SMBus is from 10 kHz to 100 kHz. The host or bus master
generates the SCL signal, and the SE98A uses the SCL signal to receive or send data on
the SDA line. Data transfer is serial, bidirectional, and is one bit at a time with the Most
Significant Bit (MSB) transferred first, and a complete I
2
C-bus data is 1 byte. Since SCL
and SDA are open-drain, pull-up resistors must be installed on these pins.
7.2  Slave address
The SE98A uses a 4-bit fixed and 3-bit programmable (A0, A1 and A2) 7-bit slave address
that allows a total of eight devices to coexist on the same bus. The input of each pin is
sampled at the start of each I
2
C-bus/SMBus access. The A0, A1 and A2 pins are pulled
LOW internally. The A0 pin is also overvoltage tolerant, supporting 10 V software write
protection when applied to the SPD that shares common address lines.
 
Fig 5.    Slave address
R/W
002aab304
0
0
1
1
A2
A1
A0
fixed
hardware
selectable
slave address
MSB
LSB
X
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