Renesas rl78 User Manual

RL78/G1A

CHAPTER 16 INTERRUPT FUNCTIONS

Figure 16-1. Basic Configuration of Interrupt Function (1/2)

(A) Internal maskable interrupt

PR1

ISP1

PR0

ISP0

Internal bus

Interrupt
request

Priority controller

Vector table

address generator

Standby release
signal

(B) External maskable interrupt (INTPn)

PR1

ISP1

PR0

ISP0

Internal bus

External interrupt edge

enable register

(EGP, EGN)

INTPn pin input

Edge

detector

Priority controller

Vector table

address generator

Standby release
signal

IF:

Interrupt request flag

IE:

Interrupt enable flag

ISP0:

In-service priority flag 0

ISP1:

In-service priority flag 1

MK:

Interrupt mask flag

PR0:

Priority specification flag 0

PR1:

Priority specification flag 1

Remark 25, 32-pin:

n = 0 to 4

48-pin:

n = 0 to 6, 8, 9

64-pin:

n = 0 to 11

R01UH0305EJ0200 Rev.2.00

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Jul 04, 2013