UPD17015 datasheet(74/120 Pages) NEC

74 / 120 page

µPD17015

13.6

USING THE LCD CONTROLLER/DRIVER

Fig. 13-8 shows an example of LCD panel connection.

The following sample program turns on the 7-segment display with the LCD0 and LCD1 pins.

Example

WORK

MEM

0.00H

; Work area

PMNO

MEM

0.01H

; Storage area of preset memory number

FLG

LCDD0.1

; Defines the low-order one bit of LCDD0 as the

symbol CH display.

;LCDDATA:

; Display segment data

;

abcdefg–

;

0000000011111100B

; 0FCH

∗∗0

;

0000000001100000B

;

60H

∗∗1

;

0000000011011010B

; 0DAH

∗∗2

;

0000000011110010B

; 0F2H

∗∗3

;

0000000001100110B

; 66H

∗∗4

;

0000000010110110B

; 0B6H

∗∗5

;

0000000010111110B

; 0BEH

∗∗6

;

0000000011100100B

; 0E4H

∗∗7

;

0000000011111110B

; 0FEH

∗∗8

;

0000000011110110B

; 0F6H

∗∗9

CNG_LCD_DAT:

SKE

WORK0, #0

LCD1

MOV

DBF0, #0CH

MOV

DBF1, #0FH

LCD1:

SKE

WORK0, #1

LCD2

MOV

DBF0, #0

MOV

DBF1, #6

LCD2:

SKE

WORK0, #2

LCD3

MOV

DBF0, #0AH

MOV

DBF1, #0DH

LCD3:

SKE

WORK0, #3

LCD4

MOV

DBF0, #2

MOV

DBF1, #0FH

UPD17015 Datasheet(PDF) 74 Page - NEC

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