mc68hc08ln56 Freescale Semiconductor, Inc, mc68hc08ln56 Datasheet - Page 23

• Manufacturer Part Number: mc68hc08ln56
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

1.4.16 LCD Driver Pins (FP39:FP0)
FP39:FP0 are the LCD frontplane drivers. See
information.
1.5 LCD Driver Power Supply Pins (CPFLT, V
V
The LCD module requires multiple voltage levels, which are generated internally with a charge pump.
CPFLT and V
through a 0.01 µF capacitor and V
for the LCD drivers which are used to generate the LCD charge pump voltage levels. Each should be tied
to ground through a 0.1 µF capacitor, with the exception of V
V
as to a 0.1 µF capacitor to ground for noise filtering. V
pump to 0.1 µF switched capacitors. See
information.
1.6 Clock Distribution
Each module in the MC68HC08LN56/708LN56 that requires a clock uses either a buffered raw oscillator
clock CGMXCLK or the system bus clock CGMOUT. CGMOUT is a divide-by-2 of either the PLL (if
engaged) or CGMXCLK. The internal bus clock is a divide-by-2 of CGMOUT.
Freescale Semiconductor
LL
CP4
is the supply input for the LCD digital logic and should be tied to the same potential as V
:V
CP1
LLH
)
are pins for filter capacitors used by the charge pump. CPFLT should be tied to ground
MC68HC08LN56 • MC68HC708LN56 General Release Specification, Rev. 2.1
LLH
LCD Driver Power Supply Pins (CPFLT, V
through a 0.22 µF capacitor. V
Chapter 15 Liquid Crystal Display Driver (LCD)
Chapter 15 Liquid Crystal Display Driver (LCD)
CP4
:V
CP1
LL7
LL7
, which should use a 0.22 µF capacitor.
are the pins used to connect the charge
:V
LL7
LL1
:V
LL7
, V
LL1
:V
LL
LL1
are the power supply pins
, V
, V
LL
LLH
, V
LLH
, and
for more
, and V
DD
for more
, as well
CP4
:V
CP1
23
)