EM78P568

8-bit OTP Micro-controller

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* This specification are subject to be changed without notice.

5

01/31/2004

V4.7

XIN

PLLC

Oscillator

timing control

R1(TCC)

Prescaler

WDT

timer

General

RAM

R4

Interrupt

control

Instruction

decoder

Instruction

register

OTP

ROM

R3

R5

ACC

ALU

STACK

DATA & Control Bus

XOUT

R2

DATA

RAM

Control sleep

and wakeup

on I/O port

P55~P57

D/A

Prog. tone gen.

CTCSS block

Comparator

IOC5

R5

PORT5

P60~P67

IOC6

R6

PORT6

P70~P77

IOC7

R7

PORT7

P80~P87

IOC8

R8

PORT8

P90~P97

IOC9

R9

PORT9

PB0~PB7

IOCB

RB

PORTB

PC0~PC7

IOCC

RC

PORTC

LCD RAM

LCD driver

COM0~COM3

SEG0~SEG31

Fig.2b Block diagram

Fig.2c Block diagram for OTP function

Shift register p to s

OTP aray

Security

register

Configuration

register

Address counter

Power

on reset

High

voltage

detector

OTP control unit

DATA

OEB

PGMB

ACLK

DINCK

VPP

Shift register s to p