EM78P803B

8-bit Micro-controller

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2006/2/27

V1.3.5

V. Functional Block Diagram

TIMING

CONTROL

TIMER

TCC

COUNTER1

COUNTER2

(16-bit CNT)

WDT

Program ROM

DATA RAM

CONTROL REGISTER

LCD DRIVER

I/O PORT

CPU

R to F 16-bits Counter

Fig.2 Block diagram1

XIN

PLLC

Oscillator

timing control

Control sleep

and wakeup

on I/O port

R1(TCC)

Prescaler

WDT

timer

General

RAM

R4

Interrupt

control

Instruction

decoder

Instruction

register

ROM

R3

R5

ACC

ALU

STACK

DATA & Control Bus

DATA

RAM

P54~P57

XOUT

R2

IOC5

R5

PORT5

P60~P67

IOC6

R6

PORT6

P70~P77

IOC7

R7

PORT7

P80~P83

IOC8

R8

PORT8

P94~P97

IOC9

R9

PORT9

LCD RAM

LCD driver

COM0~COM7

SEG0~SEG27

R to F 16-bits

Counter

IN, CF, RF,

CRS, RS

ERIC Ex.

CLK

Fig.3 Block diagram2