EM73880 datasheet(2/40 Pages) EMC

2 / 40 page

* This specification are subject to be changed without notice.

EM73880

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

11.30.2001

Preliminary

FUNCTION BLOCK DIAGRAM

Symbol

Pin-type

Function

DD, VDD2

Power supply (+) / speech synthesizer power supply(+)

Power supply (-)

RESET

RESET-A

System reset input signal, low active

mask option :

none

pull-up

CLK

OSC-G

Capacitor connecting pin for internal high frequency OSC.

LXIN

OSC-B/OSC-H Crstal/RC connecting pin for low speed clock source

LXOUT

OSC-B

Crstal/RC connecting pin for low speed clock source

P0(0..3)/WAKEUP0..3

INPUT-K

4-bit input port with IDLE releasing function

mask option :

wakeup enable, negative edge release, pull-up

wakeup enable, negative edge release, none

wakeup enable, positive edge release, pull-down

wakeup enable, positive edge release, none

wakeup disable, pull-up

wakeup disable, pull-down

wakeup disable, none

P4.0

I/O-R

1-bit bidirection I/O port

PIN DESCRIPTIONS

Interrupt

Control

Time

Base

Timer/Counter

(TA,TB)

System Control

Instruction Decoder

Instruction Register

ROM

Reset

Control

Int. Clock

Generator

Clock

Generator

(slow)

Timing

Generator

Clock Mode

Control

Data pointer

ACC

ALU

Flag

Stack pointer

Stack

RAM

I/O Control

P0.0/WAKEUP0

P0.1/WAKEUP1

P0.2/WAKEUP2

P0.3/WAKEUP3

RESET

LXIN

LXOUT

HTC

LCD

CLK

Speech Synthesizer

PWM

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