Datasheet

Liquid Crystal Display Driver (LCD)
Technical Data MC68HC908LJ12 — Rev. 2.1
328 Liquid Crystal Display Driver (LCD) Freescale Semiconductor
16.7.2 FP0–FP26 (Frontplane Drivers)
FP0–FP26 are the frontplane driver output pins. These are connected to
the frontplane of the LCD panel. Depending on LCD duty selected and
the contents in the LCD data registers, the voltage waveforms in Figure
16-8, Figure 16-9, and Figure 16-10 appear on the frontplane pins.
FP19–FP26 are shared with port C I/O pins. These pins are configured
for standard I/O or LCD use by the PCEL and PCEH bits in CONFIG2
register.
Figure 16-8. Static LCD Frontplane Driver Waveforms
DUTY = STATIC
V
LCD
V
LCD2
V
LCD3
V
LCD1
V
LCD
V
LCD1
V
LCD3
V
LCD2
1
FxB0
———
0
FxB0
———
DATA LATCH: 1 = ON, 0 = OFF
1FRAME
FPx OUTPUT