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參數(shù)資料
| 型號(hào)： | SE95D,112 |
| 廠商： | NXP Semiconductors |
| 文件頁(yè)數(shù)： | 11/27頁(yè) |
| 文件大小： | 150K |
| 描述： | IC SENSOR TEMP 2.8-5.5V SOT96-1 |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 功能： | 溫度監(jiān)視系統(tǒng)（傳感器），監(jiān)視器 |
| 傳感器類型： | 內(nèi)部 |
| 感應(yīng)溫度： | -55°C ~ 125°C |
| 精確度： | ±3°C（最小值） |
| 拓?fù)洌?/td> | ADC（三角積分型），比較器，振蕩器，寄存器庫(kù) |
| 輸出類型： | 2 線串行，I²C? |
| 輸出警報(bào)： | 無(wú) |
| 輸出風(fēng)扇： | 是 |
| 電源電壓： | 2.8 V ~ 5.5 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 管件 |
| 其它名稱： | 935274141112 SE95D SE95D-ND |
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SE95_7
?NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 07 2 September 2009
11 of 27
NXP Semiconductors
SE95
Ultra high accuracy digital temperature sensor and thermal watchdog
Obviously, for 9-bit Temp data application in replacing the industry standard LM75, just
use only 9 MSB bits of the two bytes and disregard 7 LSB of the LSByte. The 9-bit Temp
data with 0.5 癈 resolution of the SE95 is dened exactly in the same way as for the
standard LM75 and it is here similar to the Tos and Thyst registers.
8.6 Overtemperature shutdown threshold and hysteresis registers
These two registers, are write/read registers, and also called set-point registers. They are
used to store the user-dened temperature limits, called overtemperature shutdown
threshold (Tos) and hysteresis temperature (Thyst), for the device watchdog operation. At
the end of each conversion the Temp data will be compared with the data stored in these
two registers in order to set the state of the device OS output; see
Section
7.1.
Each of the set-point registers contains two 8-bit data bytes consisting of one MSByte and
one LSByte the same as register Temp. However, only 9 bits of the two bytes are used to
store the set-point data in twos complement format with the resolution of 0.5 癈.
T
ab
le
12
and
T
ab
le
13 show the bit arrangement of the Tos data and Thyst data in the data bytes.
Notice that because only 9-bit data are used in the set-point registers, the device uses
only the 9 MSB of the Temp data for data comparison.
When a set-point register is read, all 16 bits are provided to the bus and must be collected
by the controller to complete the bus operation. However, only the 9 most signicant bits
should be used and the 7 LSB of the LSByte are equal to zero and should be ignored.
T
ab
le
14 shows examples of the limit data and value.
Table 12. Tos register
MSByte
LSByte
7 6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
D8 D7 D6 D5 D4 D3 D2 D1 D0
X
X
X
X
X
X
X
Table 13. Thyst register
MSByte
LSByte
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
D8 D7 D6 D5 D4 D3 D2 D1 D0
X
X
X
X
X
X
X
Table 14. Tos and Thyst register
11-bit binary
(twos complement)
Hexadecimal value
Decimal value
Value
0 1111 1010
0FA
250
125.0 癈
0 0011 0010
032
50
25.0 癈
0 0000 0001
001
1
0.5 癈
0 0000 0000
000
0
0.0 癈
1 1111 1111
1FF
1
0.5 癈
1 1100 1110
1CE
50
25.0 癈
1 1001 0010
192
110
55.0 癈
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