AN594 datasheet(25/28 Pages) STMICROELECTRONICS

25 / 28 page

Direct LCD Drive

25/28

addi

a,040h

;

DIG2,a

; DIG2 = data/rom @ of LCD driver

ret

;***********************************************************************

END OF HEXA — > DECIMAL DATA CONVERSION SUBROUTINE

;***********************************************************************

TABLE OF HEXA — > DECIMAL DATA CONVERSION ( 00 TO 49 BinCodDec )

;***********************************************************************

.org

0e00h

.byte

00h,01h,02h,02h,03h,04h,05h,05h

.byte

06h,07h,08h,09h,09h,10h,11h,12h

.byte

12h,13h,14h,15h,16h,16h,17h,18h

.byte

19h,20h,20h,21h,22h,23h,23h,24h

.byte

25h,26h,27h,27h,28h,29h,30h,30h

.byte

31h,32h,33h,34h,34h,35h,36h,37h

.byte

37h,38h,39h,40h,41h,41h,42h,43h

.byte

44h,45h,45h,46h,47h,48h,48h,49h

;***********************************************************************

END OF HEXA —> DECIMAL DATA CONVERSION TABLE ( 00 to 49 )

;***********************************************************************

TABLE OF HEXA —> DECIMAL DATA CONVERSION ( 50 to 99 BinCodDec )

;***********************************************************************

.org

0e40h

.byte

50h,51h,52h,52h,53h,54h,55h,55h

.byte

56h,57h,58h,59h,59h,60h,61h,62h

.byte

62h,63h,64h,65h,66h,66h,67h,68h

.byte

69h,70h,70h,71h,72h,73h,73h,74h

.byte

75h,76h,77h,77h,78h,79h,80h,80h

.byte

81h,82h,83h,84h,84h,85h,86h,87h

.byte

88h,88h,89h,90h,91h,91h,92h,93h

.byte

94h,95h,95h,96h,97h,98h,98h,99h

;***********************************************************************

END OF HEXA — > DECIMAL DATA CONVERSION TABLE ( 50 to 99 )

;***********************************************************************

SEGMENT CONTROL WITHOUT ANY POINT DISPLAY

;*PA0,4 —-> SEG CB

;*PA1,5 —-> SEG DH

;*PA2,6 —-> SEG DH

;*PA3,7 —-> SEG GA

;*PA0,PA1,PA2,PA3—-> DIGIT1

;*PA4,PA5,PA6,PA7—-> DIGIT2

;*Backplane #1 (pb1) biases C,D,E,G

;*Backplane #2 (pb0) biases A,B,F,H

;*These tables are dedicated to one LCD type with two digits and LCD

;*control is described above ; when LCD is changing these tables have

;* to be

modified

ANNEX 2: Software of the ST6265x based application (Continued)

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