1

Vss

-

-

Power supply (GND)

2

Vcc

-

-

Power supply (+5V)

3

Vee

-

-

Contrast adjust

4

RS

0/1

I

0 = Instruction input
1 = Data input

5

R/W

0/1

I

0 = Write to LCD module
1 = Read from LCD module

6

E

1, 1->0

I

Enable signal

7

DB0

0/1

I/O

Data bus line 0 (LSB)

8

DB1

0/1

I/O

Data bus line 1

9

DB2

0/1

I/O

Data bus line 2

10

DB3

0/1

I/O

Data bus line 3

11

DB4

0/1

I/O

Data bus line 4

12

DB5

0/1

I/O

Data bus line 5

13

DB6

0/1

I/O

Data bus line 6

14

DB7

0/1

I/O

Data bus line 7 (MSB)

Clear display

0

0

0

0

0

0

0

0

0

1

Clears display and returns cursor to the home position (address 0).

1.64mS

Cursor home

0

0

0

0

0

0

0

0

1

*

Returns cursor to home position (address 0). Also returns display being shifted to the original position. DDRAM contents remains unchanged.

1.64mS

Entry mode set

0

0

0

0

0

0

0

1

I/D

S

Sets cursor move direction (I/D), specifies to shift the display (S). These operations are performed during data read/write.

40uS

Display On/Off control

0

0

0

0

0

0

1

D

C

B

Sets On/Off of all display (D), cursor On/Off (C) and blink of cursor position character (B).

40uS

Cursor/display shift

0

0

0

0

0

1

S/C

R/L

*

*

Sets cursor-move or display-shift (S/C), shift direction (R/L). DDRAM contents remains unchanged.

40uS

Function set

0

0

0

0

1

DL

N

F

*

*

Sets interface data length (DL), number of display line (N) and character font(F).

40uS

Set CGRAM address

0

0

0

1

CGRAM address

Sets the CGRAM address. CGRAM data is sent and received after this setting.

40uS

Set DDRAM address

0

0

1

DDRAM address

Sets the DDRAM address. DDRAM data is sent and received after this setting.

40uS

Read busy-flag and address counter

0

1

BF

CGRAM / DDRAM address

Reads Busy-flag (BF) indicating internal operation is being performed and reads CGRAM or DDRAM address counter contents (depending on previous instruction).

0uS

Write to CGRAM or DDRAM

1

0

write data

Writes data to CGRAM or DDRAM.

40uS

Read from CGRAM or DDRAM

1

1

read data

Reads data from CGRAM or DDRAM.

40uS

I/D

0 = Decrement cursor position

1 = Increment cursor position

S

0 = No display shift

1 = Display shift

D

0 = Display off

1 = Display on

C

0 = Cursor off

1 = Cursor on

B

0 = Cursor blink off

1 = Cursor blink on

S/C

0 = Move cursor

1 = Shift display

R/L

0 = Shift left

1 = Shift right

DL

0 = 4-bit interface

1 = 8-bit interface

N

0 = 1/8 or 1/11 Duty (1 line)

1 = 1/16 Duty (2 lines)

F

0 = 5x7 dots

1 = 5x10 dots

BF

0 = Can accept instruction

1 = Internal operation in progress