M38749M5T-XXXFS 查看數據表（PDF） - MITSUBISHI ELECTRIC

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M38749M5T-XXXFS

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

MITSUBISHI MICROCOMPUTERS

3874 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Multiple factors/one vector interrupt

Interrupt request of interrupt

factor: IDREQINYZ

Clear instruction

by user program

Interrupt enable bit

for interrupt factor

SYNC

Internal system

clock φ

STP Instruction

DQ

T

R

Interrupt request bit for

interrupt factor

Interrupt request from

multiple factors: IDREQY

DQ

T

R

Clear instruction

by user program

Interrupt disable flag (I)

Interrupt request bit for

each vector: IREQY

DQ

T

R

DQ

T

R

Interrupt request get control

signal: IREQGET

Hardware clear signal by

occurrence of interrupt

Clear instruction by

user program

Interrupt enable bit

for each vector

One factor/one vector interrupt

Interrupt request bit for

each vector: IREQX

Interrupt Request

IREQINX

DQ

T

R

DQ

T

R

Interrupt request get

control signal: IREQGET

Hardware clear signal by

occurrence of interrupt

Clear instruction by

user program

Interrupt enable bit

for each vector

Fig.18 Interrupt control diagram

Interrupt occurrence

Interrupt disable flag (I)

BRK Instruction

Reset

25

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