MC68HC908LJ24 Datasheet, PDF (361/464 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Liquid Crystal Display (LCD) Driver
I/O Signals
17.7.2 FP0—FP32 (Frontplane Drivers)
FP0–FP32 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
17-8, Figure 17-9, Figure 17-10 and Figure 17-11 appear on the
frontplane pins.
FP11–FP18 are shared with port E I/O pins. These pins are configured
for standard I/O or LCD use by the PEE bit in CONFIG2 register.
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.
DUTY = STATIC
DATA LATCH: 1 = ON, 0 = OFF
FxB0
—
—
—
0
1FRAME
FPx OUTPUT
FxB0
—
—
—
1
Figure 17-8. Static LCD Frontplane Driver Waveforms
V_LCD
V_LCD1
V_LCD2
V_LCD3
V_LCD
V_LCD1
V_LCD2
V_LCD3
MC68HC908LJ24/LK24 — Rev. 2
MOTOROLA
Liquid Crystal Display (LCD) Driver
For More Information On This Product,
Go to: www.freescale.com
Data Sheet
361