M30102 datasheet(39/164 Pages) RENESAS

39 / 164 page

Under

development

Tentative Specifications REV.E1

Specifications in this manual are tentative and subject to change.

Mitsubishi microcomputers

M30100/M30102 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Interrupts

Interrupt source

Vector table addresses

Remarks

Address (L) to address (H)

Undefined instruction

FFFDC16 to FFFDF16

Interrupt on UND instruction

Overflow

FFFE016 to FFFE316

Interrupt on INTO instruction

BRK instruction

FFFE416 to FFFE716

If the vector is filled with FF16, program execution starts from

the address shown by the vector in the variable vector table

Address match

FFFE816 to FFFEB16

There is an address-matching interrupt enable bit

Single step (Note)

FFFEC16 to FFFEF16

Do not use

Oscillation stop detection/

FFFF016 to FFFF316

watchdog timer

________

DBC (Note)

FFFF416 to FFFF716

Do not use

UART0 receive (Note)

FFFF816 to FFFFB16

Do not use

Reset

FFFFC16 to FFFFF16

Table 1.12.1. Interrupt and fixed vector address

Note: Interrupts used for debugging purposes only.

Mid address

Low address

0 0 0 0

High address

0 0 0 0

Vector address + 0

Vector address + 1

Vector address + 2

Vector address + 3

LSB

MSB

Interrupts and Interrupt Vector Tables

If an interrupt request is accepted, a program branches to the interrupt routine set in the interrupt vector

table. Set the first address of the interrupt routine in each vector table. Figure 1.12.2 shows format for

specifying interrupt vector addresses.

Two types of interrupt vector tables are available — fixed vector table in which addresses are fixed and

variable vector table in which addresses can be varied by the setting.

• Fixed vector tables

The fixed vector table is a table in which addresses are fixed. The vector tables are located in an area

extending from FFFDC16 to FFFFF16. One vector table comprises four bytes. Set the first address of

interrupt routine in each vector table. Table 1.12.1 shows the interrupts assigned to the fixed vector

tables and addresses of vector tables.

Figure 1.12.2. Format for specifying interrupt vector addresses

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