M38C37ECMXXXFS datasheet(61/224 Pages) RENESAS

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38C3 Group User’s Manual

HARDWARE

FUNCTIONAL DESCRIPTION SUPPLEMENT

Interrupt

38C3 group permits interrupts on the basis of 16 sources.

It is vector interrupts with a fixed priority system. Accordingly, when

two or more interrupt requests occur during the same sampling, the

Table 14 Interrupt sources, vector addresses and interrupt priority

FUNCTIONAL DESCRIPTION SUPPLEMENT

higher-priority interrupt is accepted first. This priority is determined

by hardware, but various priority processing can be performed by

software, using an interrupt enable bit and an interrupt disable flag.

For interrupt sources, vector addresses and interrupt priority, refer to

Table 14.

Interrupt Source

Reset (Note 2)

INT0

INT1

INT2

Serial I/O

Timer A

Timer 1

Timer 2

Timer 3

Timer 4

Timer 5

Timer 6

CNTR0

CNTR1

Key input (Key-

on wake-up)

A-D conversion

BRK instruction

Priority

Vector Addresses (Note 1)

High

FFFD16

FFFB16

FFF916

FFF716

FFF516

FFF316

FFF116

FFEF16

FFED16

FFEB16

FFE916

FFE716

FFE516

FFE316

FFE116

FFDF16

FFDD16

Interrupt Request

Generating Conditions

At reset

At detection of either rising or falling edge

of INT0 input

At detection of either rising or falling edge

of INT1 input

At detection of either rising or falling edge

of INT2 input

At completion of serial I/O data transmit/re-

ceive

At timer A underflow

At timer 1 underflow

At timer 2 underflow

At timer 3 underflow

At timer 4 underflow

At timer 5 underflow

At timer 6 underflow

At detection of either rising or falling edge

of CNTR0 input

At detection of either rising or falling edge

of CNTR1 input

At falling of port P8 (at input) input logical

level AND

At completion of A-D conversion

At BRK instruction execution

Remarks

Non-maskable

External interrupt

(active edge selectable)

External interrupt

(active edge selectable)

External interrupt

(active edge selectable)

Valid when serial I/O is selected

STP release timer underflow

External interrupt

(active edge selectable)

External interrupt

(active edge selectable)

External interrupt

(falling valid)

Valid when A-D conversion interrupt is

selected

Non-maskable software interrupt

Low

FFFC16

FFFA16

FFF816

FFF616

FFF416

FFF216

FFF016

FFEE16

FFEC16

FFEA16

FFE816

FFE616

FFE416

FFE216

FFE016

FFDE16

FFDC16

Notes 1: Vector addresses contain interrupt jump destination addresses.

2: Reset function in the same way as an interrupt with the highest priority.

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