upd78f0148m1gka1-9eu Renesas Electronics Corporation., upd78f0148m1gka1-9eu Datasheet - Page 423

• Manufacturer Part Number: upd78f0148m1gka1-9eu
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(C) External maskable interrupt (INTKR)
(D) Software interrupt
19.3 Registers Controlling Interrupt Functions
to interrupt request sources.
The following 6 types of registers are used to control the interrupt functions.
• Interrupt request flag register (IF0L, IF0H, IF1L, IF1H)
• Interrupt mask flag register (MK0L, MK0H, MK1L, MK1H)
• Priority specification flag register (PR0L, PR0H, PR1L, PR1H)
• External interrupt rising edge enable register (EGP)
• External interrupt falling edge enable register (EGN)
• Program status word (PSW)
Table 19-2 shows a list of interrupt request flags, interrupt mask flags, and priority specification flags corresponding
IF:
IE:
ISP:
MK:
PR:
KRM: Key return mode register
Interrupt
request
Interrupt request flag
Interrupt enable flag
In-service priority flag
Interrupt mask flag
Priority specification flag
1 when KRMn = 1 (n = 0 to 7)
Interrupt
request
Figure 19-1. Basic Configuration of Interrupt Function (2/2)
Key
interrupt
detector
CHAPTER 19 INTERRUPT FUNCTIONS
IF
User’s Manual U15947EJ3V1UD
MK
Internal bus
Priority controller
IE
Priority controller
Internal bus
PR
Vector table
address generator
ISP
Vector table
address generator
Standby release signal
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