NEC uPD72257, Preliminary User'S Manual

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• 16 bpp RGB(565): The colour format uses 2 byte per pixel with 5 bit
for red, 5 bit for blue and 6 bit for green. The blue colour is taken as
the alpha channel during colour conversion. This alpha can be
substituted with any alpha during the colourization step in the
Drawing Engine.
• 16 bpp aRGB(4444): The colour format uses 2 byte per pixel with 4
bit for every channel.
• 32 bpp aRGB(8888): The colour format uses 4 byte per pixel with 8
bit for every channel.
Chapter 8 Drawing Engine
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Preliminary User's Manual S19203EE1V3UM00