MC14LC5002FB View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

View to exact match

MC14LC5002FB

72-Segment / 128-Segment LCD Drivers CMOS

Motorola => Freescale 

APPLICATION INFORMATION

Figure 9 shows an interface example for serial data interface.

Example 1 contains the software to use HC05 with MC14LC5003 in serial data interface.

VDD

DOUT

MC68HC05 SCK

STROBE

A0 A1 A2

OSC1

Din MC14LC5003

DCLK

OSC2

ENB

R = 470 kΩ

BP1-BP4

FP1-FP32

1/4 MUX DISPLAY

Figure 9. Serial Interface Example Between MC68HC05 and MC14LC5003

PORTC EQU

$02

DDRC EQU

$06

SEN

EQU

$07

SCL

EQU

$06

SDA

EQU

$05

DOUT EQU

$FF

PORTC

PORTDC

ENABLE PIN, PC7

CLOCK PIN, PC6

DATA PIN, PC5

OUTPUT DATA

ORG

$0050

W1

RMB

1

COUNT RMB

1

ORG

$1FFE

FCB

#$01

FCB

#$00

ADDRESS OF RESET VECTOR OF MC68HC805C4

RESET VECTOR

*** Main Program start at 0100 ***

ORG

START LDA

STA

$0100

#DOUT

DDRC

SET DATA LINE OUTPUT

AGAIN

LDX

BSET

BSET

#$00

SDA,PORTC IDLE STATE

SCL,PORTC CLOCK AND DATA ARE HIGH

READY

BSET

LDA

STA

BCLR

SEN,PORTC

#$11

W1

SDA,PORTC

EN=1

SET ADDRESS AND 8 CHARACTERS

START CONDITION, DATA LOW WHILE CLOCK HIGH

LBYTE

CLC

LDA

STA

LDA

INCX

#$08

COUNT

SEND,X

8 BITS TO SHIFT

GET A BYTE

MOTOROLA

MC14LC5002 • MC14LC5003 • MC14LC5004

3–15

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