upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 319

• Manufacturer Part Number: upd78f0114hgb-8es-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(C) External maskable interrupt (INTKR)
15.3 Registers Controlling Interrupt Functions
to interrupt request sources.
(D) Software interrupt
The following 6 types of registers are used to control the interrupt functions.
Table 15-2 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 registers (IF0L, IF0H, IF1L)
Interrupt mask flag registers (MK0L, MK0H, MK1L)
Priority specification flag registers (PR0L, PR0H, PR1L)
External interrupt rising edge enable register (EGP)
External interrupt falling edge enable register (EGN)
Program status word (PSW)
Interrupt request flag
Interrupt enable flag
In-service priority flag
Interrupt mask flag
Priority specification flag
1 when KRMn = 1 (n = 0 to 7)
Figure 15-1. Basic Configuration of Interrupt Function (2/2)
Key
interrupt
detector
Interrupt
request
CHAPTER 15 INTERRUPT FUNCTIONS
IF
User’s Manual U16961EJ4V0UD
Priority controller
MK
Internal bus
Internal bus
IE
Priority controller
Vector table
address generator
PR
ISP
Vector table
address generator
Standby release signal
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