M38B53M4-059FP datasheet(281/355 Pages) MITSUBISHI

281 / 355 page

38B5 Group User’s Manual

3-33

APPENDIX

3.5 Control registers

Fig. 3.5.1 Structure of port Pi

Fig. 3.5.2 Structure of port Pi direction register

Port Pi

b7 b6 b5 b4 b3 b2 b1 b0

Port Pi (i = 0, 1, 2, 3, 4, 5, 7, 8)

(Pi: addresses 0016, 0216, 0416, 0616, 0816, 0A16, 0E16, 1016)

Port Pi0

qIn output mode

Write •••••••• Port latch

Read •••••••• Port latch

qIn input mode

Write •••••••• Port latch

Read •••••••• Value of pin

Port Pi1

Port Pi2

Port Pi3

Port Pi4

Port Pi5

Port Pi6

Port Pi7

Functions

Name

At reset R W

Port Pi direction register

b7 b6 b5 b4 b3 b2 b1 b0

Port Pi direction register (i = 0, 2, 4, 5, 7, 8)

(PiD: addresses 0116, 0516, 0916, 0B16, 0F16, 1116)

0 : Port Pi0 input mode

1 : Port Pi0 output mode

Name

Functions

At reset R W

0 : Port Pi1 input mode

1 : Port Pi1 output mode

0 : Port Pi2 input mode

1 : Port Pi2 output mode

0 : Port Pi3 input mode

1 : Port Pi3 output mode

0 : Port Pi4 input mode

1 : Port Pi4 output mode

0 : Port Pi5 input mode

1 : Port Pi5 output mode

0 : Port Pi6 input mode

1 : Port Pi6 output mode

0 : Port Pi7 input mode

1 : Port Pi7 output mode

(Note)

Port Pi direction

Note: Bit 7 of the port P4 direction register (address 0916) does not have

direction register function because P47 is input port. When writing to bit 7

of the port P4 direction register, write “0” to the bit.

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