NJU3503 查看數據表（PDF） - Japan Radio Corporation

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NJU3503

4-BIT SINGLE CHIP MICRO CONTROLLER

Japan Radio Corporation  

NJU3503

• PROGRAMMABLE INPUT/OUTPUT PORT CONTROL REGISTER(PHY24)

Programmable Input / Output Port Control Register(PHY24) is a peripheral register to set the

programmable input / output PORTA. The input or the output is selected for each bit by the mask option.

It is set to “1” as the output, and is set to “0” as the input.

PORTA are set as the input in accordance with the state of PHY24 which is set to “0” on the “RESET”

operation.

[ READING Programmable Input / Output Port Control Register(PHY24) ]

(MSB) 3

2

1

0 (LSB)

PHY24 “∗” “∗”

“∗”

“∗”

PA0 input/output state(0:input, 1:output)

PA1 input/output state(0:input, 1:output)

PA2 input/output state(0:input, 1:output)

PA3 input/output state(0:input, 1:output)

[ WRITING Programmable Input / Output Port Control Register(PHY24) ]

(MSB) 3

2

PHY24 “∗”

“∗”

1

0 (LSB)

“∗”

“∗”

PA0 input/output setting (0:input, 1:output)

PA1 input/output setting (0:input, 1:output)

PA2 input/output setting (0:input, 1:output)

PA3 input/output setting (0:input, 1:output)

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