Datasheet

Liquid Crystal Display Driver (LCD)
Technical Data MC68HC908LJ12 — Rev. 2.1
334 Liquid Crystal Display Driver (LCD) Freescale Semiconductor
The voltage waveform across the "f" segment of the LCD (between BP1
and FP0) is illustrated in Figure 16-14. As shown in the waveform, the
voltage peaks reach the LCD-ON voltage, V
LCD
, therefore, the segment
will be ON.
Figure 16-14. "f" Segment Voltage Waveform
The voltage waveform across the "e" segment of the LCD (between BP2
and FP0) is illustrated in Figure 16-15. As shown in the waveform, the
voltage peaks do not reach the LCD-ON voltage, V
LCD
, therefore, the
segment will be OFF.
Figure 16-15. "e" Segment Voltage Waveform
BP1–FP0
+V
LCD
+V
LCD1
+V
LCD2
–V
LCD2
–V
LCD1
–V
LCD
0
+V
LCD1
+V
LCD2
–V
LCD2
–V
LCD1
–V
LCD
+V
LCD
0
BP2–FP0