DEMO9S08LIN Freescale, DEMO9S08LIN Datasheet - Page 152

• Manufacturer Part Number: DEMO9S08LIN
• Manufacturer: Freescale

Specifications of DEMO9S08LIN

• Lead Free Status / RoHS Status: Compliant

Chapter 9 Liquid Crystal Display Driver (S08LCDV1)
9.4.4.1
The LCD charge pump is a voltage tripler. Using the voltage divider and the charge pump, the LCD module
can effectively double or triple V
compatible with both 3-V or 5-V LCD glass.
The LCD module charge pump mode select bit (LCDCPMS) in the LCDSUPPLY register configures the
LCD module operational mode as a voltage doubler or a voltage tripler. In
signal is used to control switches within the voltage divider block to enable or disable the two-thirds (2/3
* V
(recommended to V
the LCD module is configured as a voltage tripler (recommended to be used with 5-V LCD glass) by
shorting the voltage divider. The LCDCPMS configuration depends on the LCD panel operating voltage
specification in the design application.
9.4.4.1.1
The LCDCPEN bit in the LCDSUPPLY register enables the charge pump. When charge pump is enabled
(LCDCPEN = 1), V
9.4.4.1.2
When charge pump is disabled (LCDCPEN = 0), V
Instead, V
152
LCD
) voltage divider. If LCDCPMS = 0, the LCD module is configured as a voltage doubler
LL1
LCD Charge Pump and Voltage Divider
, V
LCD Charge Pump Enabled
LCD Charge Pump Disabled
LL2
LCD
LL1
, and V
, V
be used with 3-V LCD glass) by enabling the voltage divider. If LCDCPMS = 1,
LL2
LL3
MC9S08LC60 Series Data Sheet: Technical Data, Rev. 4
, and V
must be provided by external hardware.
LCD.
LL3
This LCD module configurability makes the LCD module
are will be generated internally.
LL1
, V
LL2
, and V
LL3
are not generated internally.
Figure
9-17, LCDCPMS bit
Freescale Semiconductor