Initialization Sequence
8 Bit Mode
After VCC > 4.75 v Wait 260 ms
Function Set
38H (RS=0)
8 Bit Bus Mode
Function Set
38H (RS=0)
8 Bit Bus Mode
Brightness Set
02H (RS=1)
Brightness Level to 100%
Display OFF
08H (RS=0)
Display, Cursor and Blinking OFF
Display Clear
01H (RS=0)
Clear Display
Wait 2.3 ms
Display ON
0CH (RS=0)
Display ON, Cursor and Blinking OFF
Entry Mode
06H (RS=0)
Cursor Increment
4 Bit Mode
After VCC > 4.75 v Wait 260 ms
Function Set
3xH (RS=0)
8 Bit Bus Mode
Function Set
3xH (RS=0)
8 Bit Bus Mode
Function Set
3xH (RS=0)
8 Bit Bus Mode
Function Set
2x, 8xH (RS=0)
Set 4 Bit Bus Mode
Brightness Set
0xH, 2xH (RS=1)
100% Brightness
Display OFF
0xH, 8xH (RS=0)
Display, Cursor and Blinking OFF
Display Clear
0xH, 1xH (RS=0)
Clear Display
Wait 2.3 ms
Display ON/OFF
0xH, CxH (RS=0)
Display ON, Cursor and Blinking OFF
Entry Mode
0xH, 6xH (RS=0)
Sets cursor move direction
Jumper
JP6
Open
Parallel Interface
JP6
Short
Serial Interface
JP2
Open
M68
E,R/W
JP2
Short
i80
WR,RD
Pin Assignments
Parallel
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Signal Name
GND
VCC
NC
RS
R/W(WR)
E(RD)
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
Function
Ground
Power Supply
N/A
Switch Signal
Data Transfer Select
Write Enable
Data Input
Data Input
Data Input
Data Input
Data Input
Data Input
Data Input
Data Input
Direction
Input
Input
-
Input
Input
Input
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Serial
Pin #
1
2
3
4
5
6
Signal Name
VCC
SI/SO
GND
STB
SCK
NC
Function
Power Supply
Data Input/Output
Ground
Strobe
Display Clock
N/A
Direction
Input
Input/Output
Input
Input
Input
-
