CHAPTER 14 INTERRUPT FUNCTIONS
Figure 14-1. Basic Configuration of Interrupt Function
(A) Internal non-maskable interrupt
Internal bus
Vector table
address generator
Interrupt request
Standby release signal
(B) Internal maskable interrupt
Internal bus
IE
MK
Vector table
address generator
Interrupt request
IF
Standby release signal
(C) External maskable interrupt
Internal bus
INTM0, INTM1, KRM00
MK
IE
Vector table
address generator
Interrupt
request
Edge
detector
IF
Standby
release signal
INTM0: External interrupt mode register 0
INTM1: External interrupt mode register 1
KRM00: Key return mode register 00
IF:
Interrupt request flag
Interrupt enable flag
Interrupt mask flag
IE:
MK:
User’s Manual U15075EJ1V0UM00
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NEC [ NEC ]
