EM73880 查看數據表（PDF） - ELAN Microelectronics

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EM73880

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

ELAN Microelectronics 

FUNCTION BLOCK DIAGRAM

EM73880

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

Preliminary

RESET

CLK LXOUT LXIN

Reset

Control

Int. Clock

Generator

Clock

Generator

(slow)

Timing

Generator

Interrupt

Control

Instruction Decoder

Instruction Register

Time

Base

Timer/Counter

(TA,TB)

ROM

PC

System Control

Data pointer

ACC

ALU

Flag

ZC

S

Clock Mode

Control

Stack pointer

Stack

RAM

HR LR

VA

VB

V1

V2

LCD

V3

I/O Control

HTC

Speech Synthesizer

PWM

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

Pin-type

Function

Power supply (+) / speech synthesizer 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 OSC.

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

OSC-B

Crstal/RC connecting pin for low speed clock source

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

I/O-R

1-bit bidirection I/O port

* This specification are subject to be changed without notice.

11.30.2001 2

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