EM78P813

8-bit OTP Micro-controller

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* This specification is subject to change without notice.

7

2004/8/19

(V1.6)

V. Functional Block Diagram

Program

ROM

DATA

ROM

DATA

RAM

MCU

PLL

FSK

Decoder

Dual Tone

Generator

DTMF

Receiver

Energy

Detector

Comparator

Serial IO

(SPI/UART)

LCD

RAM

Current

DA

CW

Decoder

VDD

AVDD

Voltage

Regulator

X 2

Charge Pump

V1~V5

Generator &

driving ability

control

LCD

driver

COM&SEG

2.7 V

DTMF

signal

FSK

signal

CAS

TONE

Analog

input

Data

FSK DTMF CAS

signal

DAOUT

VSS

AVSS

Fig.2

Block diagram1

Xin Xout PLLC

Oscillator

timing control

Control sleep

and wake-up

on I/O port

R1(TCC)

WDT timer

prescalar

GENERAL

RAM

R4

Interruption

control

ROM

Instruction

register

Instruction

decoder

R2

STACK

ALU

ACC

R3

R5

DATA & CONTROL BUS

DATA RAM

DATA ROM

PORT6

IOC6 R6

P60~P67

PORT7

IOC7 R7

P70~P77

FSK DECODER

DTM F receiver

DUAL TONE GENERATOR

KEY TONE

SERIAL I/O

COM PARATOR

FSK DECODER

DTM F receiver

DUAL TONE GENERATOR

KEY TONE

SERIAL I/O

COM PARATOR

CURRENT DA

PORT8

IOC8 R8

P80~P87

PORT9

IOC9 R9

P90~P97

PORTB

IOCB RB

PB0~PB7

PORTC

IOCC RC

PC0~PC7

Call waiting decoder

Energy Detector

PORTD

IOCD RD

PD0~PD2

LCD RAM

Fig.3

Block diagram2