M3885 datasheet(22/103 Pages) RENESAS

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3885 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

Interrupt Request

Generating Conditions

Remarks

Interrupt Source

Low

FFFC16

High

Priority

Table 8 Interrupt vector addresses and priority

Vector Addresses (Note 1)

Reset (Note 2)

INT0

Input buffer full

(IBF)

INT1

Output buffer

empty (OBE)

At reset

At detection of either rising or

falling edge of INT0 input

At input data bus buffer writing

At detection of either rising or

falling edge of INT1 input

At output data bus buffer read-

ing

Non-maskable

External interrupt

(active edge selectable)

External interrupt

(active edge selectable)

Serial I/O

reception

At completion of serial I/O data

reception

Valid when serial I/O is selected

Serial I/O

transmission

SCL, SDA

Timer X

Timer Y

Timer 1

Timer 2

At completion of serial I/

Otransfer shift or when trans-

mission buffer is empty

At detection of either rising or

falling edge of SCL or SDA

At timer X underflow

At timer Y underflow

At timer 1 underflow

At timer 2 underflow

Valid when serial I/O is selected

External interrupt

(active edge selectable)

STP release timer underflow

LRESET

At falling edge of LRESET input

External interrupt

CNTR0

INT0

CNTR1

INT1

At detection of either rising or

falling edge of CNTR0 input

At detection of either rising or

falling edge of INT0 input

At detection of either rising or

falling edge of CNTR1 input

At detection of either rising or

falling edge of INT1 input

External interrupt

(active edge selectable)

External interrupt

(active edge selectable)

External interrupt

(active edge selectable)

External interrupt (falling valid)

INT5

At detection of either rising or

falling edge of INT5 input

External interrupt

(active edge selectable)

I2C

INT2

At completion of data transfer

At detection of either rising or

falling edge of INT2 input

External interrupt

(active edge selectable)

Notes 1: Vector addresses contain interrupt jump destination addresses.

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

INT3

INT4

A-D converter

Key-on wake-up

BRK instruction

At detection of either rising or

falling edge of INT3 input

At detection of either rising or

falling edge of INT4 input

At completion of A-D conversion

At falling of port P3 (at input) in-

put logical level AND

At BRK instruction execution

External interrupt

(active edge selectable)

External interrupt

(active edge selectable)

External interrupt (falling valid)

Non-maskable software interrupt

FFFD16

FFFB16

FFF916

FFF716

FFF516

FFF316

FFF116

FFED16

FFEF16

FFEB16

FFE916

FFE716

FFE516

FFE316

FFE116

FFDF16

FFDD16

FFFA16

FFF816

FFF616

FFF416

FFF216

FFF016

FFEE16

FFEC16

FFEA16

FFE816

FFE616

FFE416

FFE216

FFE016

FFDE16

FFDC16

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