38C3 datasheet(68/224 Pages) RENESAS

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2-3

APPLICATION

2.1 I/O port

38C3 Group User’s Manual

2.1.2 Relevant registers

Fig. 2.1.2 Structure of port Pi (i = 0, 1, 2, 3, 4, 5, 6, 8)

Fig. 2.1.3 Structure of port P7

Port Pi

b7 b6 b5 b4 b3 b2 b1 b0

Port Pi (i = 0, 1, 2, 3, 4, 5, 6, 8)

(Pi: addresses 0016, 0216, 0416, 0616, 0816, 0A16, 0C16, 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 P7

b7 b6 b5 b4 b3 b2 b1 b0

Port P7

(P7: address 0E16)

Port P70

qIn output mode

Write •••••••• Port latch

Read •••••••• Port latch

qIn input mode

Write •••••••• Port latch

Read •••••••• Value of pin

Port P71

Functions

Name

At reset R W

Nothing is arranged for these bits. When these

bits are read out, the contents are undefined.

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