Renesas PCA4738S-42A Spezifikationen PDF herunterladen (Seite 11)

10

3851 Group

(Built-in 16 KB ROM)

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

Fig. 8 Port block diagram (2)

(10) Ports P3

0

–P3

4

D

i

r

e

c

t

i

o

n

r

e

g

i

s

t

e

r

D

a

t

a

b

u

s

Port latch

(11) Port P4

0

C

N

T

R

1

i

n

t

e

r

r

u

p

t

i

n

p

u

t

Data bus

Port latch

D

i

r

e

c

t

i

o

n

r

e

g

i

s

t

e

r

(

9

)

P

o

r

t

P

2

7

D

a

t

a

b

u

s

P

o

r

t

l

a

t

c

h

D

i

r

e

c

t

i

o

n

r

e

g

i

s

t

e

r

Timer output

S

e

r

i

a

l

I

/

O

e

n

a

b

l

e

b

i

t

S

R

D

Y

o

u

t

p

u

t

e

n

a

b

l

e

b

i

t

S

e

r

i

a

l

I

/

O

m

o

d

e

s

e

l

e

c

t

i

o

n

b

i

t

C

N

T

R

0

i

n

t

e

r

r

u

p

t

i

n

p

u

t

S

e

r

i

a

l

r

e

a

d

y

o

u

t

p

u

t

A

-

D

c

o

n

v

e

r

t

e

r

i

n

p

u

t

A

n

a

l

o

g

i

n

p

u

t

p

i

n

s

e

l

e

c

t

i

o

n

b

i

t

(12) Ports P4

1

–P4

3

D

i

r

e

c

t

i

o

n

r

e

g

i

s

t

e

r

Data bus

Port latch

Interrupt input

P

u

l

s

e

o

u

t

p

u

t

m

o

d

e

T

i

m

e

r

o

u

t

p

u

t

(

1

3

)

P

o

r

t

P

4

4

P

W

M

o

u

t

p

u

t

D

a

t

a

b

u

s

P

o

r

t

l

a

t

c

h

Di

rect

i

on

re

g

ister

P

W

M

o

u

t

p

u

t

e

n

a

b

l

e

b

i

t

P

u

l

s

e

o

u

t

p

u

t

m

o

d

e

P

u

l

s

e

o

u

t

p

u

t

m

o

d

e

Interrupt input

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 54 55

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