MC68HC08LT8 Datasheet, PDF (82/156 Pages) Freescale Semiconductor, Inc – Microcontrollers

Liquid Crystal Display (LCD) Driver
DUTY = 1/4
BP0
1FRAME
V_LCD
V_LCD1
V_LCD2
V_LCD3
V_LCD
V_LCD1
BP1
V_LCD2
V_LCD3
V_LCD
BP2
V_LCD1
V_LCD2
V_LCD3
BP3
Figure 8-7. 1/4 Duty LCD Backplane Driver Waveforms
V_LCD
V_LCD1
V_LCD2
V_LCD3
8.6.2 FP0–FP24 (Frontplane Drivers)
FP0–FP24 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 8-8, Figure 8-9, Figure 8-10 and Figure 8-11 appear on the frontplane pins.
DUTY = STATIC
DATA LATCH: 1 = ON, 0 = OFF
FxB0
—
—
—
0
1FRAME
FPx OUTPUT
FxB0
—
—
—
1
Figure 8-8. Static LCD Frontplane Driver Waveforms
V_LCD
V_LCD1
V_LCD2
V_LCD3
V_LCD
V_LCD1
V_LCD2
V_LCD3
MC68HC08LT8 Data Sheet, Rev. 1
82
Freescale Semiconductor