ST7528 controller equivalent, 16 gray scale dot matrix lcd controller.
16-level (White Mode ~ Dark Mode) Gray Scale Display with PWM and FRC Methods
DDRAM data [ 4n : 4n+3 ] 4n 0 0 0 : : 1 1 1 4n + 1 0 0 0 : : 1 1 1 4n + 2 0 0 1 : : 0 1 1 4n.
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