7545 查看數據表（PDF） - Renesas Electronics

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产品描述 (功能)

生产厂家

7545

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Renesas Electronics 

7545 Group

On-going Routine

Interrupt request

(Note)

M (S) (PCH)

Execute JSR

Store Return Address

on Stack

(S) (S - 1)

M (S) (PCL)

(S) (S - 1)

Subroutine

Restore Return

Address

Execute RTS

(S) (S + 1)

(PCL) M (S)

(S) (S + 1)

(PCH) M (S)

M (S) (PCH)

(S)

M (S)

(S - 1)

(PCL)

Store Return Address

on Stack

(S)

M (S)

(S - 1)

(PS)

Store Contents of Processor

Status Register on Stack

(S) (S - 1)

Interrupt

Service Routine

Execute RTI

I Flag “0” to “1”

Fetch the Jump Vector

(S)

(PS)

(S + 1)

M (S)

Restore Contents of

Processor Status Register

(S) (S + 1)

(PCL)

(S)

M (S)

(S + 1)

Restore Return

Address

(PCH) M (S)

Note : The condition to enable the interrupt Interrupt enable bit is “1”

Interrupt disable flag is “0”

Fig. 8 Register push and pop at interrupt generation and subroutine call

Table 5 Push and pop instructions of accumulator or processor status register

Accumulator

Processor status register

Push instruction to stack

PHA

PHP

Pop instruction from stack

PLA

PLP

Rev.1.06 Mar 07, 2008 Page 10 of 59

REJ03B0140-0106

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