upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 111

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(b) If a new NMI request is generated twice while an NMI service routine is being executed
NMI request
(a) If a new NMI request is generated while an NMI service routine is being executed
NMI request
Main routine
Figure 5-2. Acknowledging Non-Maskable Interrupt Request
Main routine
CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION
NMI request
NMI request
NMI request
User’s Manual U12768EJ4V1UD
Held pending because NMI service program is being processed
Held pending because NMI service program is being processed
Only one NMI request is acknowledged even though
two or more NMI requests are generated
(PSW. NP = 1)
NMI request held pending because PSW. NP = 1
Pending NMI request processed
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