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AN4124 Datasheet(PDF) 27 Page - STMicroelectronics

No. de pieza AN4124
Descripción Electrónicos  Using SPC56EL60x fault collection and control unit
PDF  32 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4124 Datasheet(HTML) 27 Page - STMicroelectronics

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AN4124
Redundancy and functions
Doc ID 023294 Rev 2
27/32
The flow is:
●
Press key1: to inject asynchronous external IRQ (ISR)
●
External IRQ (ISR)
–
Blinking LED1
–
Fake NCF
–
FCCU STATE = ALARM -> ALARM IRQ (ISR)
●
Alarm IRQ (ISR)
–
Wait for ALARM-time-out (5 s) or check External push button (KEY2)
●
If alarm-timeout
–
FCCU STATE = FAULT -> NMI IRQ (without RESET):
–
DEVICE STATE = SAFE
–LED1 off
–
Clear FCCU FAULT and return to main
●
If KEY 2 pressed
–
LED1 off
–
Clear FCCU FAULT and return to main
Figure 8.
NCF injection flow



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