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SED1278F/D
4
Timing Chart
DISPLAY COMMAND
Read Cycle
RS
V
IH1
V
IH1
V
IH1
V
IH1
V
IH1
V
IL1
V
OH1
V
OL1
V
OH1
Significant
Data
V
OL1
V
IL1
V
IL1
V
IL1
V
IH1
V
IL1
R/W
E
DB0 to DB7
t
AS
t
cycE
t
RD
t
WEH
t
AH
t
AH
t
fE
t
fE
t
DHR
RS
V
IH1
V
IL1
V
IH1
V
IH1
V
IL1
V
IL1
V
IH1
V
IL1
V
IH1
Significant
Data
V
IL1
V
IL1
V
IL1
V
IL1
V
IH1
V
IL1
E
DB0 to DB7
t
AS
t
cycE
t
WEH
t
DS
t
AH
t
AH
t
fE
t
fE
t
DH
Write Cycle
R/W
CLEAR DISPLAY
CURSOR HOME
ENTRY MODE SET
DISPLAY ON/OFF
CURSOR/DISPLAY SHIFT
SYSTEM SET
SET CGRAM ADDRESS
SET DDRAM ADDRESS
WRITE DATA
READ DATA
READ BUSY FLUG/
ADDRESS COUNTER
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
1
BF
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
DL
0
0
0
1
S/C
N
0
0
1
D
R/L
F
0
1
I/D
C
1
1
I/D
C
1
Parameter NoteRS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
A
CG
A
DD
AC
Write Data
Read Data
DB1=1: Increment, DB1=0: Decrement
DB0=1: The display is shifted.
DB0=0: The display is not shifted.
DB2=1: Display on DB2=0: Display off
DB1=1: Cursor on DB1=0: Cursor off
DB0=1: Brinking on DB0=0: Brinking off
DB3=1: Shifts display one character
DB2=1: Right shift, DB2=0: Left shift
DB4=1: 8 bits, DB4=0: 4 bits
DB3=1: 2 lines display (1/16 duty),
DB3=0: 1 line display
DB2=1: 5 10 dots, 1/11 duty
DB2=0: 5 7 dots, 1/8 duty
The address length that can be set is 64 addresses.
The address length that can be set is 80 addresses.
DB7=1: Busy (instruction not accepted)
DB7=0: Ready (instruction accepted)
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