UPD78F9500MA-CAC-A Datasheet, PDF (180/342 Pages) Renesas Technology Corp – 8-Bit Single-Chip Microcontrollers

CHAPTER 10 INTERRUPT FUNCTIONS
Figure 10-1. Basic Configuration of Interrupt Function
(A) Internal maskable interrupt
Internal bus
MK
IE
Interrupt request
IF
(B) External maskable interrupt
Vector table
address generator
Standby release signal
External interrupt mode
register (INTM0)
Internal bus
MK
IE
Interrupt
request
Edge
detector
IF
Vector table
address generator
Standby
release signal
IF: Interrupt request flag
IE: Interrupt enable flag
MK: Interrupt mask flag
10.3 Interrupt Function Control Registers
The interrupt functions are controlled by the following four types of registers.
• Interrupt request flag register 0 (IF0)
• Interrupt mask flag register 0 (MK0)
• External interrupt mode register 0 (INTM0)
• Program status word (PSW)
Table 10-2 lists interrupt requests, the corresponding interrupt request flags, and interrupt mask flags.
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User’s Manual U18172EJ3V0UD