參數(shù)資料
型號(hào)： NE1617ADS,112
廠商： NXP Semiconductors
文件頁數(shù)： 9/30頁
文件大?。?/td> 305K
描述： IC TEMP MONITOR 16SSOP
標(biāo)準(zhǔn)包裝： 100
功能： 溫度監(jiān)控系統(tǒng)（傳感器）
傳感器類型： 內(nèi)部和外部
感應(yīng)溫度： -55°C ~ 125°C，外部傳感器
精確度： ±3°C 本地（最大），±5°C 遠(yuǎn)程（最大）
拓?fù)洌?/td> ADC，多路復(fù)用器，寄存器庫
輸出類型： SMBus?
輸出警報(bào)： 是
輸出風(fēng)扇： 無
電源電壓： 3 V ~ 5.5 V
工作溫度： -55°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 16-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 16-SSOP
包裝： 管件
其它名稱： 935268119112
NE1617ADS
NE1617ADS-ND
NE1617A
All information provided in this document is subject to legal disclaimers.
?NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 5  20 March 2012
9 of 30
NXP Semiconductors
NE1617A
Temperature monitor for microprocessor systems
 
8.3.4   Conversion rate register
The conversion rate register is used to store programmable conversion data, which
defines the time interval between conversions in standard free-running auto-convert
mode. Table 7
 shows all applicable data and rates for the device. Only three LSB bits of
the register are used and other bits are reserved for future use. This register can be
written to and read back over the SMBus using commands of the registers named WCR
and RCR, respectively. The POR default conversion data is 02h (0.25 Hz).
Notice that the average supply current, as well as the device power consumption, is
increased with the conversion rate.
 
8.3.5   Temperature limit registers
The device has four registers to be used for storing programmable temperature limits,
including the high limit and the low limit for each channel of the external and internal
diodes. Data of the temperature register (RIT and RET) for each channel are compared
with the contents of the temperature limit registers of the same channel, resulting in alarm
conditions. If measured temperature either equals or exceeds the corresponding
temperature limits, an Alert interrupt is asserted and the corresponding flag bit in the
status register is set. The temperature limit registers can be written to and read back using
Table 6.
Temperature data format (2s complement)
Temperature (?/SPAN>C)
Digital output (8 bits)
+127
0111 1111
+126
0111 1110
+100
0110 0100
+50
0011 0010
+25
0001 1001
+1
0000 0001
0
0000 0000
-1
1111 1111
-25
1110 0111
-50
1100 1110
-65
1011 1111
Table 7.
Conversion rate control byte
Data
Conversion rate (Hz)
Average supply current (mA typical at V
DD
= 3.3 V)
00h
0.0625
67
01h
0.125
68
02h
0.25
70
03h
0.5
75
04h
1
80
05h
2
95
06h
4
125
07h
8
180
08h to FFh
(reserved)
n/a
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