M38039G8HKP datasheet(11/92 Pages) RENESAS

11 / 92 page

Rev.1.10

Nov 14, 2005

Page 11 of 91

REJ03B0166-0110

3803 Group (Spec.H QzROM version)

PRELIMINARY

Notice: This is not a final specification.

Some parametric limits are subject to change.

Fig 7.

Interrupt request

(Note)

M(S)

←(PCH)

(S)

←(S) − 1

M(S)

←(PCL)

(

←(S) − 1

Execute RTS

Subroutine

(S)

←(S) + 1

(PCL)

←M(S)

(S)

←(S) + 1

(PCH)

←M(S)

M(S)

←(PCH)

(S)

←(S) − 1

M(S)

←(PCL)

(S)

←(S) − 1

M(S)

←(PS)

(S)

←(S) − 1

Interrupt

Service Routine

(S)

←(S) + 1

(PS)

←M(S)

(S)

←(S) + 1

(PCL)

←M(S)

(S)

←(S) + 1

(PCH)

←M(S)

Execute JSR

Execute RTI

Push Return Address

on Stack

Push Contents of

Processor

Status Register on Stack

I Flag is Set from

“0” to “1”

Fetch the Jump

Vector

POP Contents of

Processor Status Register

from Stack

POP Return

Address from Stack

POP Return

Address from

Stack

Push Return

Address

on Stack

Note : Condition for acceptance of an interrupt

→ Interrupt enable flag is “1”

Interrupt disable flag is “0”

On-going Routine

Table 6

Push and pop instructions of accumulator or processor status register

Push instruction to stack

Pop instruction from stack

Accumulator

PHA

PLA

Processor status register

PHP

PLP

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