Renesas PCA7400 Manual de usuario descargar pdf (Pagina 4)

MITSUBISHI MICROCOMPUTERS

M37271MF-XXXSP

M37271EF-XXXSP, M37271EFSP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER

and ON-SCREEN DISPLAY CONTROLLER

FUNCTIONAL BLOCK DIAGRAM of M37271MF-XXXSP

Clock input Clock output

OUT

Reset input

CNV

Pins for data slicer

Clock output for OSD/

sub-clock output

Input ports P6

, P6

OSC1 OSC2

Clock input for OSD/

sub-clock input

P1 (8)

Multi-master

C-BUS interface

P3 (2)

SDA1

SCL2

SCL1

SDA2

P2 (8)

P0 (8)

P4 (7)

CLK

OUT

SI/O (8)

P6 (2)

INT1

INT2

PWM6

PWM5

PWM4

PWM3

PWM2

PWM1

PWM0

P5 (4)

OUT1

SYNC

OUT2

A-D

converter

8-bit

PWM circuit

8-bit

arithmetic

and

logical unit

Accumulator

A (8)

Timer 6

T6 (8)

Timer 5

T5 (8)

Timer 4

T4 (8)

Timer 3

T3 (8)

Timer 2

T2 (8)

Timer 1

T1 (8)

Timer count source

selection circuit

TIM2

TIM3

Data slicer

Instruction

decoder

Control signal

CRT circuit

Processor

status

PS (8)

Stack

pointer

S (8)

Index

Y (8)

Index

X (8)

ROM

60 K bytes

Program

counter

(8)

Progam

counter

(8)

RAM

1024 bytes

Data bus

Clock

generating

circuit

24 25

RESET

18 27 26 23

22 21 20 19

HOLD

RVCO

HLF

28 29

Address bus

31 14 34 35 36 37 38 39 40 10 9 8 7 41 42 43 44 45 46 47 48 33 13 12 11 17 16 15 6 5 4 3 49 50 51 52 2 1

I/O ports

, P3

I/O port P1 I/O port P2 I/O port P0 Input ports P4

–P4

Output port P5

Sync

signal input

INT3

1 2 3 4 5 6 7 8 9 ... 97 98

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