MPXM2102AS datasheet(557/670 Pages) MOTOROLA

557 / 670 page

AN1950

3–411

Motorola Sensor Device Data

www.motorola.com/semiconductors

dbnz

CNT,do256a

lsl

bcc

nochga

inc

nochga:

lda

rts

;–––––––– LCD Routines ––––––––––––––––––––––––––––––––––––––––––––––

lcdinit:

lda

#$3C

bsr

lcdcmdo

lda

#$0C

bsr

lcdcmdo

lda

#$06

bsr

lcdcmdo

lda

#$01

bsr

lcdcmdo

rts

;– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

lcdcmdo:

bsr

shiftA

bclr

4,porta

;RS=0 for command

bset

3,porta

bclr

3,porta

;toggle E

bsr

del5ms

rts

;– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

lcdchro:

bsr

shiftA

bset

4,porta

;RS=1 for data

bset

3,porta

bclr

3,porta

;toggle E

bsr

del100us

rts

;– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

shiftA:

psha

mov

#$08,BB

all8:

lsla

bcc

shift0

shift1:

bset

4,porta

bra

shift

shift0:

bclr

4,porta

shift:

bclr

5,porta

bset

5,porta

bclr

5,porta

;toggle CLK

dbnz

BB,all8

pula

rts

;– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

lcdnibo:

psha

jsr

bintasc

;convert binary to asc

bsr

lcdchro

pula

rts

;– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

lcdbyto:

psha

lsra

bsr

lcdnibo

;high nibble

pula

and

#$0F

bsr

lcdnibo

;low nibble

pula

rts

;– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

lcdstro:

psha

lda

0,x

lcon:

cmp

#$80

bhs

iscmd

cmp

#$1F

bls

iscmd

isdta:

bsr

lcdchro

;output it to LCD

reuse1:

aix

#$0001

lda

0,x

;indexed by y

cmp

#$40

;continue until

bne

lcon

;character = ’@’

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

MPXM2102AS Datasheet(PDF) 557 Page - Motorola, Inc

MPXM2102AS Datasheet(HTML) 557 Page - Motorola, Inc

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