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SC802B
VER2.1
AKIHABARA INC.
Page 14 of 14
b) Power supply
Single Supply Voltage Types
LCM
5V
VDD-VO
VDD
VO
VSS
VDD-VO:LCD driving voltage
GND
10k~20k
VDD
10k~20k
VDD-VO:LCD driving voltage
LCM
VSS
VDD-V0
VO
VDD
+3V
VEE
VDD
Dual Supply Voltage Types
c) Operating example
4-Bit operation and 8-digit 1-line display (using internal reset)
No Instruction
Display
Operation
1 Power on . ( SPLC780A1 starts initializing )
Power on reset. No display.
Function set
RS
R/W
D7
D6
D5
D4
2
0
0
0
0
1
0
Set to 4-bit operation
Function set
0
0
0
0
1
0
3
0
0
0
0
X
X
Set to 4-bit operation and select
1-line display line and character font.
Display on / off control
0
0
0
0
0
0
4
0
1
1
1
0
0
_
Display on. Cursor appears.
Entry mode set
0
0
0
0
0
0
5
0
0
1
1
0
0
_
Increase address by one. It will shift
the cursor to the right when writing to
the DD RAM / CG RAM. Now the
display has no shift.
Write data to CG RAM / DD RAM
1
0
0
1
0
1
6
1
0
0
1
1
1
W_
Write
“W
“.
The
cursor
is
incremented by one and shifted to
the right.
Reset function
At power on, it starts the internal auto-reset circuit and executes the initial instructions .
There are the initial procedures shown as bellows:
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