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COMMANDS & DATA

Transferring Display Data/Displaying on LCD

Command

Data

Remarks

Hex

Binary

0 x 55

01010101

256 Bytes (64 x 32 = 2,048 bits)

See below for details of bitmap data

LED (Backlight) Color Set

Command

Data

Remarks

Hex

Binary

R R G G B B 1 1

2 bits x 3

For each of RGB:

0 x 40

01000000

00 = off

01 = 1/4

10 = 1/2

11 = full

LED (Backlight) Brightness Set

Command

Data

Remarks

Hex

Binary

For leading 3bits:

0 x 41

01000001

* * * 1 1 1 1 1

3 bits

000 = 1/20

(dark)

001 = 1/10

010 = 1/7

011 = 1/5

100 = 1/3

101 = 1/2

110 = 2/3

111 = full

(bright)

Reset (Returning to Initial Status at Power Activation)

Command

Data

Remarks

Hex

Binary

0 x 5E

01011110

00000011

Returning to initial status at power activation

• Transferring display data/displaying on LCD: command (1 Byte) + data (256 Bytes)

• Others: command (1 Byte) + data (1 Byte)

• Commands can be accepted only when all bits coincide; otherwise, they are not acknowledged

• Additional commands will not be received until the communication of commands (1 Byte) and data (256 or 1 Byte) is completed

• There is no time limit from the beginning to end of data receipt

• Commands may be executed consecutively (no need to wait between commands)

• Irregular commands or data are not recognized

• Initial status at power activation: LCD display off, LED off (brightness 1/20, color off)