Sharp LH79524 User Manual page 127

LH79524/LH79525 User's Guide
BIT
4
3:1
0
Table 4-27. CTRL Fields (Cont'd)
NAME
Monochrome STN LCD LCD is Monochrome (Black and White) STN.
This bit has no effect in TFT mode.
BW
1 = STN LCD is monochrome
0 = STN LCD is color
LCD Bits-Per-Pixel For the LH79525, 12 bpp is selected by 0b100. See
Table 4-2 and Table 4-3 for 12-bit mapping in the 16-bit frame buffer.
000 = 1 BPP
001 = 2 BPP
010 = 4 BPP
BPP
011 = 8 BPP
100 = 16 BPP
101 = Invalid
110 = Invalid
111 = Invalid
Color LCD Controller Enable LCD displays usually require that their
logic signals be operating before the high voltages are applied to the dis-
play. Thus, the LCDVDDEN output signal is not asserted unless both the
LCDEN and PWR bit fields have been programmed to 1. Most LCD dis-
plays require that the controller be enabled (LCDEN = 1) approximately
LCDEN
20 ms before power is applied to the LCD (PWR = 1). Most LCD displays
also specify that the power-down sequence be the reverse of the power-
up sequence.
1 = Color LCD Controller enabled
0 = Color LCD Controller disabled
Version 1.0
Color Liquid Crystal Display Controller
DESCRIPTION
4-31