ST7920-0C View Datasheet(PDF) - Sitronix Technology Co., Ltd.

Part Name

Description

MFG CO.

ST7920-0C

Chinese Fonts built in LCD controller/driver

Sitronix Technology Co., Ltd.

'ST7920-0C' PDF : 49 Pages View PDF

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ST7920
8051 demo program for serial interface
;--------------------------------------------------------------
; Write data from A into INSTRUCTION Register
;--------------------------------------------------------------
WRINS:
SETB CS
SETB SID
; SID = 1
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
CLR
SID
; SID = 0
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.7 ; SID = A.7
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.6 ; SID = A.6
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.5 ; SID = A.5
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.4 ; SID = A.4
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
CLR
SID
; SID = 0
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.3 ; SID = A.3
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.2 ; SID = A.2
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.1 ; SID = A.1
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.0 ; SID = A.0
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
CLR
SID
; SID = 0
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
CLR
CS
CALL DLY8
RET
;-------------------------------------------------
; Write data from A into DATA Register
;-------------------------------------------------
WRDATA:
SETB CS
SETB SID
; SID = 1
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
CLR
SID
; SID = 0
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SID
; SID = 1
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
CLR
SID
; SID = 0
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.7 ; SID = A.7
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.6 ; SID = A.6
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.5 ; SID = A.5
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.4 ; SID = A.4
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
CLR
SID
; SID = 0
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.3 ; SID = A.3
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.2 ; SID = A.2
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.1 ; SID = A.1
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
MOVBIT SID, A.0 ; SID = A.0
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
CLR
SID
; SID = 0
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
SETB SCLK ; READ DATA FROM SID
CLR
SCLK
CLR
CS
CALL DLY8
RET
V4.0
27/49
2008/08/18

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