UPD17073 NEC, UPD17073 Datasheet - Page 165

• Manufacturer Part Number: UPD17073
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
• Manufacturer: NEC

18.6 Using LCD Controller/Driver
given below.
Figure 18-8 shows an example of wiring of an LCD panel
An example of a program that lights the 7 segments connected to LCD0 and LCD1 pins shown in Figure 18-8 is
Example
PMN0
CH
LCDDATA:
MEM
FLG
DW
DW
DW
DW
DW
DW
DW
DW
DW
DW
MOV
MOV
MOV
MOV
LD
LD
LD
LD
ADD
ADDC
ADDC
ADDC
ST
ST
ST
ST
MOVT
BANK1
ST
ST
SET1
SET1
0.01H
LCDD0.3
0000000000000000B
0000000000000110B
0000000010110101B
0000000010100111B
0000000001100110B
0000000011100011B
0000000011110011B
0000000010000110B
0000000011110111B
0000000011100111B
AR0, #.DL.LCDDATA SHR 12 AND 0FH
AR1, #.DL.LCDDATA SHR 8 AND 0FH
AR2, #.DL.LCDDATA SHR 4 AND 0FH
AR3, #.DL.LCDDATA
DBF0, AR0
DBF1, AR1
DBF2, AR2
DBF3, AR3
DBF0, PMN0
DBF1, #0
DBF2, #0
DBF3, #0
AR0, DBF0
AR1, DBF1
AR2, DBF2
AR3, DBF3
DBF, @AR
LCDD0, DBF0
LCDD1, DBF1
CH
LCDEN
; Preset number storage area
; Defines symbol with high-order 1 bit of LCD0 register for ‘CH’ display
; LCD segment table data
; BLANK
; 1
; 2
; 3
; 4
; 5
; 6
; 7
; 8
; 9
AND 0FH
; Table reference instruction
; LCD ON
PD17072,17073
165