NJU3502L データシートの表示（PDF） - Japan Radio Corporation

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NJU3502L

4-BIT SINGLE CHIP MICRO CONTROLLER

Japan Radio Corporation  

NJU3502

• PORTF(PF0, PF1)

PORTF 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 PORTF is selected as the input-output PORT, PF0 is fixed as the

output and PF1 can be selected as the input or the output by the mask option. When the PORTF is

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

writing data to the PORTF register(PHY11). When PF1 is selected as the input, the external signal is

gotten directly through the input terminal by reading data from PHY11.

[READING PORTF INPUT DATA (PHY11)]

(MSB) 3

PHY11 “0”

2

1

0 (LSB)

“0” PF1 “∗”

PF0 monitor

PORTF Input Data

When PF0 is output, its output condition can be monitored.

[WRITING PORTF OUTPUT DATA (PHY11)]

(MSB) 3

PHY11

−

2

1

0 (LSB)

−

PF1 PF0

PORTF Output Data

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