UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 240

• Manufacturer Part Number: UPD78F9418AGK-9EU
• Manufacturer: Renesas Electronics America

Specifications of UPD78F9418AGK-9EU

• Lead Free Status / Rohs Status: Supplier Unconfirmed

15.4 Operation of Interrupt Servicing
15.4.1 Non-maskable interrupt acknowledgment operation
interrupt priority control and takes precedence over all other interrupts.
the IE flag is reset to 0, the contents of the vector table are loaded to the PC, and then program execution branches.
238
The non-maskable interrupt is unconditionally acknowledged even when interrupts are disabled. It is not subject to
When the non-maskable interrupt request is acknowledged, the PSW and PC are saved to the stack in that order,
Caution During non-maskable interrupt servicing program execution, do not input another non-maskable
interrupt request; if it is input, the servicing program will be interrupted and the new non-
maskable interrupt request will be acknowledged.
CHAPTER 15 INTERRUPT FUNCTIONS
User’s Manual U13952EJ3V1UD