Tag Archives: grayscale converter

Bitmap2lcd : About the Work Canvas

About the Work Canvas

Bitmap2LCD is a software tool for programming small Graphic LCDs in embedded systems and a programmable text and graphic processing tool.

The WORK CANVAS (blue arrow) is a monochrome only , grayscale only  or color graphic editor

The allowed type and number of “colors” in the WORK CANVAS are defined in the OUTPUT AND SETTINGS main menu at the left side in the screen shot below.

The COLOR PICKER at the right, is changing according to the above mentioned “color depth” setting, and if it is a color WORK CANVAS like for example 4096 colors that is currently selected, the picked color in the color picker, will be the nearest color found in the internal default or custom 4096 colors palette. There are color palettes for 8, 16, 256, 4096 65535, 262k Colors.

When you import a color graphic into the WORK CANVAS, it will be converted to “color depth” defined in the OUTPUT AND SETTINGS main menu.

Bitmap2lcd Work Canvas


Grayscale GLCD controller support : 4,16 and 32 gray levels

Bitmap2LCD is a tool for programming small Graphic LCDs in embedded systems.

Since V2.3 and upwards, Bitmap2LCD supports the 4,16 and 32 level grayscale controllers. ( Newly implemented are the 4 and 32 gray levels capability )

Color images and pictures can be imported and converted to 4, 16 and 32 gray levels into the work canvas. The software tool then generates the pixel data array in the selected arrangment, 2, 4 or 5 bits per pixel.

Here’s a list of grayscale LCD controllers, featuring 4, 16 and 32 gray levels.


Grayscale LCD Controllers

4 Gray Levels (2bpp)


S6B0741 128×129 Samsung


KS0741 128×129 Samsung


HT1647 64×16 Holtek


ST7541 128×129 Sitronix


ST7571 128×129 Sitronix


ST7586S 384×160 Sitronix


UPD16686 128×128 NEC


UPD16498 128×128 NEC


UPD16488A 128×92 NEC


HD66750 128×128 Hitachi


HD66421 160×100 Hitachi


EM65100 69 x101 Elan Microelectronics Corp


NJU6680 128×128 New Japan Radio


NJU6682 160×132 New Japan Radio


RA8806 320X240 Raio Technology


16 Gray Levels (4bpp)


EM65101 128×160 Elan Microelectronics Corp


SSD1322 480×120 Solomon Systech


SSD1325 128×80 Solomon Systech


SSD1326 256×32 Solomon Systech


SSD1327 128×128 Solomon Systech


32 Gray Levels (5bpp)


ST7529 255×160 Sitronix