NJU3503L 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJU3503L

4-BIT SINGLE CHIP MICRO CONTROLLER

Japan Radio Corporation  

NJU3503

• PORTF(PF0 − PF1)

PORTF is a 2-bit input PORT. It operates also as EXTI input terminal for the external interrupt input

and CNTI terminal for the event counter external clock input by the mask option. When the PORTF is set

as the input PORT, the two external signals are gotten directly from the input terminals by reading data

from PHY22.

[ READING PORTF INPUT DATA (PHY22) ]

(MSB) 3

PHY22

“0”

2

1

0 (LSB)

“0” PF1 PF0

PORTF Input Data

• PORTG(PG0, PG1)

PORTG is a 2-bit input-output PORT. It operates also as SDO and SDI(O) terminals for the 8-bit serial

interface by the mask option. When the PORTG is selected as the input-output PORT, PG0 is fixed as

the output and PG1 can be selected as the input or the output by the mask option. When the PORTG is

selected as the output, the two signals are output through the output terminals to the external circuit by

writing data to the PORTG register(PHY23). When PL1 is selected as the input, the external signal is

gotten directly through the input terminal by reading data from PHY23.

[ READING PORTG INPUT DATA (PHY23) ]

(MSB) 3

PHY23 “0”

2

1

0 (LSB)

“0” PG1 “∗”

PG0 Monitor

PORTG Input Data

When PG0 is output, its output condition can be monitored.

[ WRITING PORTG OUTPUT DATA (PHY23) ]

(MSB) 3

PHY23 −

2

1

0 (LSB)

−

PG1 PG0

PORTG Output Data

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