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ST7920 Datasheet(PDF) 33 Page - Sitronix Technology Co., Ltd.

Part No. ST7920
Description  Chinese Fonts built in LCD controller/driver
Download  49 Pages
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Manufacturer  SITRONIX [Sitronix Technology Co., Ltd.]
Direct Link  http://www.sitronix.com.tw
Logo SITRONIX - Sitronix Technology Co., Ltd.

ST7920 Datasheet(HTML) 33 Page - Sitronix Technology Co., Ltd.

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ST7920
V4.0
33/49
2008/08/18
N7:
CLR
CLK
;
|
SETB
CLK
;
|
DJNZ
R2,N7
;
|
;---------------------------------------;<----
Counter 10236
CLR
CLK
;Counter 10237
SETB
CLK
;
MOV
A,P1
;A=Y0
CJNE
A,#B5H,ERROR
;COMPARE Y0 DATA
CLR
CLK
;Counter 10238
SETB
CLK
;
MOV
A,P1
;A=Y1
CJNE
A,#11H,ERROR
;COMPARE Y1 DATA
CLR
CLK
;Counter 10239
SETB
CLK
;
MOV
A,P1
;A=Y2
CJNE
A,#B5H,ERROR
;COMPARE Y2 DATA
CLR
CLK
;Counter 10240
SETB
CLK
;
MOV
A,P1
;A=Y3
CJNE
A,#11H,ERROR
;COMPARE Y3 DATA
CLR
CLK
;
CLR
TT4
;IF HCGROM CHECK OK THEN CLR TT4
AJMP
$
;
ERROR:
;
CLR
TT5
;IF HCGROM CHECK ERROR THEN CLR TT5
AJMP
$
;
;*******************************;
;*
DELAY TIME 100US
*;
;*******************************;
DELAY_100US
;
DEL_10
MOV
R6,#5
;
DEL_9
MOV
R7,#3
;
DJNZ
R7,$
;
DJNZ
R6,DEL_9
;
RET
;
END
;


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