NEC PD75P308 Manuale Utente Scaricare il pdf (Pagina 3)

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PD75P308

3

BLOCK DIAGRAM

P00-P03

P10-P13

P20-P23

P30-P33

/MD0-MD3

P40-P43

P50-P53

P60-P63

P70-P73

4

4

4

4

4

4

4

4

PORT0

PORT1

PORT2

PORT3

PORT4

PORT5

PORT6

PORT7

S0-S23

S24/BP0

-S31/BP7

COM0-COM3

V -V

LCO LC2

BIAS

LCDCL/P30

SYNC/P30

24

8

4

3

LCD

CONTROLLER

/DRIVER

f

LCD

RESET

SP(8)

BANK

GENERAL REG.

DATA

MEMORY

(RAM)

512 x 4 BITS

CY

ALU

V

SS

V

DD

V

PP

DECODE

AND

CONTROL

PROGRAM

MEMORY

(PROM)

8064 x 8 BITS

PROGRAM

COUNTER(13)

STAND BY

CONTROL

SYSTEM CLOCK

GENERATOR

CLOCK

DIVIDER

CLOCK

OUTPUT

CONTROL

SUB

MAIN

f /2

X

N

X2

X1XT2

XT1

PCL/P22

CPU

CLOCK

INTERRUPT

CONTROL

BIT SEQ.

BUFFER(16)

SERIAL

INTERFACE

WATCH

TIMER

TIMER/EVENT

COUNTER

#0

BASIC

INTERVAL

TIMER

TI0/P13

PTO0/P20

BUZ/P23

SI/SBI/P03

SO/SB0/P02

SCK/P01

INTBT

INTT0

INTW

INTCSI

INT0/P10

INT1/P11

INT2/P12

INT4/P00

KR0/P60-

KR3/P63,

KR4/P70-

KR7/P73

8

f

LCD

1 2 3 4 5 6 7 8 ... 33 34

PD75P308 1

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