EM73A89B Ver la hoja de datos (PDF) - ELAN Microelectronics

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EM73A89B

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

ELAN Microelectronics 

FUNCTION BLOCK DIAGRAM

EM73A89B

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

Preliminary

RESET

CLK LXIN LXOUT

Reset

Control

Clock

Generator

Timing

Generator

BZ1/VO

BZ2

P4.0(RX)

P4.1

P4.2(RY)

P4.3(RZ)

VC1~VC4,

VA,VB

VR1~VR4

System Control

Speech

synthesizer

Interrupt

Control

Instruction Decoder

Instruction Register

HTC

Timer/Counter

(TA,TB)

Time

Base

ROM

PC

Data pointer

ACC

ALU

Flag

ZC S

I/O Control

LCD Driver

Clock Mode

Control

Stack pointer

Stack

RAM

HR LR

P0.0/WAKEUP0

P0.1/WAKEUP1

P0.2/WAKEUP2

P0.3/WAKEUP3

PIN DESCRIPTIONS

Symbol

VDD,VDD2

VSS

RESET

CLK

LXIN

LXOUT

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

P4.0(RX),P4.2(RY),

P4.3(RZ)

P4.1

Pin-type

Function

Power supply (+)

Power supply (-)

RESET-A

System reset input signal, low active

mask option :

none

pull-up

OSC-G

Capacitor connecting pin for internal high frequency oscillator.

OSC-B/OSC-H Crystal/Resistor connecting pin for low speed clock source.

OSC-B

Crystal connecting pin for low speed clock source.

INPUT-B

4-bit input port with IDLE/STOP releasing function

mask option :

wakeup enable, pull-up

wakeup enable, none

wakeup disable, pull-up

wakeup disable, pull-down

wakeup disable, none

I/O-X1

3-bit bidirection I/O pins or RF oscillation input pins.

mask option :

open-drain (apply to RF oscillation)

high current push-pull

normal current push-pull

low current push-pull

I/O-Q1

1-bit bidirection I/O pin.

mask option :

open-drain

high current push-pull

normal current push-pull

low current push-pull

* This specification are subject to be changed without notice.

8.16.2001 2

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