W79E217A Datasheet, PDF (181/207 Pages) Winbond – 8-bit Microcontroller

Preliminary W79E217A Data Sheet
LCD DISPLAY LCDDATA [7:0] LCD DISPLAY LCDDATA [7:0] LCD DISPLAY LCDDATA [7:0]
0000 1010b
1111 0110b
1110 1110b
1011 1100b
1000 1010b
1111 0000b
1001 1110b
1111 1110b
1111 0100b
0100 1110b
1101 1110b
1110 0100b
1101 0110b
1111 1010b
0000 0001b
Table 20-3: Example of writing LCDDATA
Example:
;------------------------------------------------------------------
; Example writing a number 3 to the LCD display.
;------------------------------------------------------------------
.chip 8052
.symbols
.RAMCHK OFF
;------------------------------------------------------------------
LCDCN
equ E4h
LCDPT
equ ABh
LCDDATA equ 86h
;------------------------------------------------------------------
ORG 0000h
JMP Start
;------------------------------------------------------------------
ORG 0100h
Start:
MOV LCDCN, #9Eh
; Enable LCD, Duty = 1/4, Pump A, Freq = 1/16
MOV LCDPT, #0Ah
; Select location to write
MOV LCDDATA, #4Eh
; Number “3” is display in LCD panel
JMP $
;------------------------------------------------------------------
END
- 181 -
Publication Release Date: December 14, 2007
Revision A3.0