NJU3505L 查看數據表（PDF） - Japan Radio Corporation

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NJU3505L

4-BIT SINGLE CHIP MICRO CONTROLLER

Japan Radio Corporation  

NJU3505

(2) PROGRAMMABLE INPUT/OUTPUT PORT OPERATION

a. The output operation example

PB0 and PB1 of PORTB output “H”, and PB2 and PB3 of PORTB output “L”.

:

SRPC

LDI Y,0

LDI A,%0001

TAP

LDI Y,2

LDI A,%0011

TAP

LDI Y,13

LDI A,%0010

TAP

:

;

; Peripheral table is

;

set as the table1

;

;PHY18 is pointed

;"0011" is stored into Accumulator

;Data in Accumulator is transmitted to PHY18

; (PORTB output register)

;PHY29 is pointed

;"0010" is stored into Accumulator

;Data in Accumulator is transmitted to PHY29

PORTB is

set as the output

b. The input operation example

Accumulator gets the input data from PORTB.

:

SRPC

;

LDI Y,0

LDI A,%0001

TAP

; Peripheral table is

;

set as the table1

;

LDI Y,13

LDI A,%0000

TAP

;PHY29 is pointed

;"0000" is stored into Accumulator

;Data in Accumulator is transferred to PHY29

PORTB is

set as the input

LDI Y,2

;PHY18 is pointed

TPA

;The input data from PHY18 is transferred to Accumulator

:

The signal from PB0 terminal is stored into the LSB of Accumulator, the signal from PB1 terminal is

stored into the b1 of Accumulator, the signal from PB2 terminal is stored into the b2 of Accumulator, and

the signal from PB3 terminal is stored into the b3 of Accumulator.

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