Renesas PROM Programming Adapter PCA7447FP Technical Information PDF herunterladen (Seite 18)

15

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

38C8 Group

Fig. 11 Port block diagram (1)

(1) Ports P0, P1

4

–P1

7

, P2, P4

1

E

x

c

e

p

t

P

0

,

P

1

4–

P

17

Data bus

D

i

r

e

c

t

i

o

n

r

e

g

i

s

t

e

r

P

o

r

t

l

a

t

c

h

P

u

l

l

-

u

p

c

o

n

t

r

o

l

K

e

y

-

o

n

w

a

k

e

-

u

p

i

n

t

e

r

r

u

p

t

i

n

p

u

t

I

N

T

1

i

n

t

e

r

r

u

p

t

i

n

p

u

t

,

A

D

T

(

2

)

P

o

r

ts

P

1

0

–

P

1

3

,

P

3

Analog input pin selection bit

A

-

D

c

o

n

v

e

r

t

e

r

i

n

p

u

t

(

4

)

P

o

r

t

P

4

2

Buzzer output mode

Timer output

C

N

T

R

0

i

n

t

e

r

r

u

p

t

i

n

p

u

t

(

5

)

P

o

r

t

P

4

3

P

o

r

t

l

a

t

c

h

Data bus

I

N

T

0

i

n

t

e

r

r

u

p

t

i

n

p

u

t

Data bus

(3) Port P4

0

Pull-up control

Direction

register

Port latch

Data bus

Pull-up control

D

i

r

e

c

t

i

o

n

r

e

g

i

s

t

e

r

Port latch

D

a

t

a

b

u

s

Buzzer output mode

Timer output

C

N

T

R

1

i

n

t

e

r

r

u

p

t

i

n

p

u

t

Pull-up control

Direction

register

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 56 57

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