EM78808 Ver la hoja de datos (PDF) - ELAN Microelectronics

Número de pieza

componentes Descripción

Fabricante

EM78808

8-BIT MICRO-CONTROLLER

ELAN Microelectronics 

V.Functional Block Diagram

EM78808

8-bit Micro-controller

C PCUP

U

T IM IN G

T IM IN G

CCOONNTTRROOLL

T IM E R

TCC

COUNTER 1

COUNTER 2

WDT

D DA TAAT AR OR OMM

PROGRAM

PROGRAM

ROM

ROM

D ADT AA TRAARMA M

CONTROL

RECGOINSTREOR L

R E G IS T E R

LLCCDDDDRRIVIVEERR

LCD

IOIO

I/O

PORT

PORT

FSK DECODER

CURRENT DA

Call waiting decoder

DTMF receiver

DUAL TONE GENERATOR

Energy Detector

KEY TONE

COMPARATOR

SERIAL I/O

OP

Fig.2 Block diagram1

Xin Xout PLLC

O s c illa to r

timing control

WDT timer

prescalar

R1(TCC)

Control sleep

and wake-up

on I/O port

GENERAL

RAM

R4

Interruption

control

ROM

Instruction

register

Instruction

decoder

R2

STACK

ALU

R3

ACC

R5

DATA & CONTROL BUS

DATA RAM

DATA ROM

FSK DECODER

CFaSllKwDaEitiCnOg DdeEcRoder

DDTUTMMAFLFreTrceOecieNvievEreGr ENERATOR

DUAL TONE GENERATOR

KEY TONE

KEY TONE

SERIAL I/O

CSOEMRPIAALR AI/TOO R

COMPARATOR

C UCRURRERNETN TD AD A

EOnePrgy Detector

OP

PORT5

IOC5

R5

PORT6

IOC6

R6

PORT7

IOC7

R7

PORT8

IOC8

R8

PORT9

IOC9

R9

P55~P57 P60~P67

P70~P77

P80~P87 P90~P97

PORTB

IOCB

RB

PORTC

IOCC

RC

PB0~PB7 PC0~PC7

Fig.3 Block diagram2

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* This specification is subject to change without notice.

8/1/2004 (V3.1)

9

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