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L6364 データシート(PDF) 34 Page - STMicroelectronics

部品番号 L6364
部品情報  Dual channel transceiver IC for SIO and IO-Link sensor applications
PDF  60 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6364 データシート(HTML) 34 Page - STMicroelectronics

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15
Thermal shutdown
The STATUS:SOT status bit is a filtered version of the output of the temperature sensor. When the L6364
temperature exceeds the threshold this bit is set to '1', when the temperature is below the threshold the bit is set
to '0'. The trip threshold is determined by the set-point in register THERM:TH[4:0] as shown in Figure 12.
Figure 12. L6364 thermal shutdown configuration
0
5
10
15
20
25
30
-40
0
40
80
120
160
200
240
280
TEMPERATURE (°C)
trip threshold
θ=(80-THERM : Th[4:0]*4)*2.7
release threshold
with THERM : AUT='0'
↔ θHYST
If the trip threshold is exceeded, the output switches are disabled, the event is signaled to the microcontroller via
the status register (STATUS:SOT) and an interrupt is generated.
15.1
Automatic operation
If the THERM:AUT bit is '0' and a temperature in excess of the set point is reached, then the threshold is
automatically moved to a release threshold ΘHYST below the set point. When the temperature falls below this
release threshold, the L6364 returns to a normal operating state and returns the threshold to the original level.
L6364
Thermal shutdown
DS13363 - Rev 4
page 34/60



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