mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 357

• Manufacturer Part Number: mc68hc908lj24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

17.5.5 Contrast Control
17.6 Low-Power Modes
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
The contrast of the connected LCD panel can be adjusted by configuring
the LCCON[3:0] bits in the LCD control register. The LCCON[3:0] bits
provide a 16-step contrast control, which adjusts the bias voltage in the
resistor ladder for LCD voltage, V
V
the relative panel potential voltage (V
maximum 3.3V to approximate 2.45V.
The V
then adjustments to the bias voltage by the user software to provide
automatic contrast control.
The STOP and WAIT instructions put the MCU in low power-
consumption standby modes.
LCD2
FAST CHARGE CLOCK
LCD
, are altered accordingly. For example, setting LCCON[3:0] = $F,
LCD WAVEFORM
EXAMPLE: BP0
Liquid Crystal Display (LCD) Driver
voltage can be monitored by the ADC channel, ADC7, and
LCDCLK
Figure 17-4. Fast Charge Timing
HIGH CURRENT SELECTED BEFORE SWITCHING EDGE,
PERIOD IS DEFINED BY FCCTL[1:0]
LCD3
LCD
. The relative voltages, V
– V
Liquid Crystal Display (LCD) Driver
LCD3
) is reduced from
Low-Power Modes
LCD1
Data Sheet
and
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