NEC V850ES/F 3-L Series User Manual page 226

Chapter 5
NMI being
serviced
NMI
INTWDT2
Figure 5-2
226
NMI request generated during NMI servicing
NMI
NMI request generated during
NMI servicing
Main routine
NMI request
NMI request
NMI request generated during
INTWDT2 servicing
Main routine
NMI request
INTWDT2
request
Example of non-maskable interrupt request acknowledgement operation:
NMI request generated during NMI servicing
User's Manual U18743EE1V2UM00
INTWDT2 request generated
during NMI servicing
(NP = 1 retained before NMI1
request)
Main routine
NMI servicing
(Held pending)
NMI request
Servicing of
pending NMI
INTWDT2 request generated
during NMI servicing (NP=0
set before INTWDT2 request)
Main routine
NMI
request
request
INTWDT2 request generated
during NMI servicing (NP=0
set after INTWDT2 request)
Main routine
INTWDT2
request
NMI
request
NMI request generated
during INTWDT2 servicing
Main routine
INTWDT2
servicing
(Invalid)
INTWDT2
request
System reset
Interrupt Controller (INTC)
INTWDT2
NMI servicing
INTWDT2 request (Held pending)
INTWDT2 servicing
System reset
NMI servicing
servicing
NP = 0
System reset
INTWDT2
NMI servicing
servicing
(Held
pending)
NP = 0
System reset
INTWDT2
servicing
(Invalid)
INTWDT2 request
System reset