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2 bpp color

When the S1D13705 is configured for 2 bpp color mode, the displayed colors are selected from the first four entries of the Look-Up Table. The LUT entries may be set to any of the 4096 possible colors.

Each byte in the display buffer contains four adjacent pixels. If a bit combination has a value of “00” then the color in LUT index 0 is displayed. A bit value of “01” results in the color in LUT index 1 being displayed. Likewise the bit combination of “10” displays from the third LUT entry and “11” displays a color from the fourth LUT entry.

The following table shows the example values for 2 bit-per-pixel display mode.

Table 4-2: Example LUT Values for 2 Bpp Color Mode

Index

Red

Green

Blue

 

 

 

 

00

00

00

00

 

 

 

 

01

70

70

70

 

 

 

 

02

A0

A0

A0

 

 

 

 

03

F0

F0

F0

 

 

 

 

04

00

00

00

...

00

00

00

FF

00

00

00

 

 

 

 

indicates unused entries

S1D13705

Programming Notes and Examples

X27A-G-002-03

Issue Date: 02/01/22

Page 112
Image 112
Epson S1D13705 technical manual Example LUT Values for 2 Bpp Color Mode, Indicates unused entries