Renesas PROM Programming Adapter PCA7447FP Información técnica descargar pdf (Pagina 19)

16

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

38C8 Group

Fig. 12 Port block diagram (2)

(

9

)

P

o

r

t

P

4

7

Serial I/O ready output

Serial I/O mode selection bi

t

Serial I/O enable bi

t

S

RDY

output enable bi

t

(

8

)

P

o

r

t

P

4

6

S

e

r

i

a

l

I

/

O

s

y

n

c

h

r

o

n

o

u

s

c

l

o

c

k

s

e

l

e

c

t

i

o

n

b

i

t

Serial I/O clock output

Serial I/O mode selection bi

t

Serial I/O enable bi

t

(

6

)

P

o

r

t

P

4

4

(

7

)

P

o

r

t

P

4

5

D

a

t

a

b

u

s

S

e

r

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a

l

I

/

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b

l

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b

i

t

T

r

a

n

s

m

i

t

e

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a

b

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b

i

t

S

e

r

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a

l

I

/

O

o

u

t

p

u

t

P

4

5

/

T

x

D

P

-

c

h

a

n

n

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l

o

u

t

p

u

t

d

i

s

a

b

l

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b

i

t

P

u

l

l

-

u

p

c

o

n

t

r

o

l

D

a

t

a

b

u

s

Serial I/O enable bi

t

Receive enalble bi

t

S

e

r

i

a

l

I

/

O

i

n

p

u

t

P

o

r

t

l

a

t

c

h

P

u

l

l

-

u

p

c

o

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t

r

o

l

D

i

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t

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r

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g

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r

P

o

r

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l

a

t

c

h

D

i

r

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c

t

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r

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g

i

s

t

e

r

S

e

r

i

a

l

I

/

O

e

n

a

b

l

e

b

i

t

P

u

l

l

-

u

p

c

o

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t

r

o

l

D

i

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c

t

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g

i

s

t

e

r

P

o

r

t

l

a

t

c

hD

a

t

a

b

u

s

Serial I/O clock input

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

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