MC9S08LC36 FREESCALE [Freescale Semiconductor, Inc], MC9S08LC36 Datasheet - Page 31

• Manufacturer Part Number: MC9S08LC36
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

2.3.6
2.3.6.1
The V
For detailed information about these pins see the LCD chapter.
2.3.6.2
44 pins are dedicated to frontplane and backplane drivers; on the 64-pin package, 36 pins are dedicated.
Immediately after reset, the LCD driver pins are high-impedance. For detailed information about LCD
frontplane and backplane driver pins, see the LCD chapter.
2.3.7
MC9S08LC60 Series MCUs support up to 24 general-purpose I/O pins which are shared with on-chip
peripheral functions (timers, serial I/O, ADC, keyboard interrupts, etc.). On each MC9S08LC60 Series
device, there is one input-only and two output-only port pins. When a port pin is configured as a
general-purpose output or a peripheral uses the port pin as an output, software can select one of two drive
strengths and enable or disable slew rate control. When a port pin is configured as a general-purpose input
or a peripheral uses the port pin as an input, software can enable a pullup device. For information about
controlling these pins as general-purpose I/O pins, see
Immediately after reset, all pins that are not output-only are configured as high-impedance
general-purpose inputs with internal pullup devices disabled. After reset, the output-only port function is
not enabled but is configured for low output drive strength with slew rate control enabled. The PTC6 pin
defaults to BKGD/MS on any reset.
Freescale Semiconductor
LCD
, V
LCD Pins
General-Purpose I/O and Peripheral Ports
LCD Power Pins
LCD Frontplane and Backplane Driver Pins
LL1
To avoid extra current drain from floating input pins, the reset initialization
routine in the application program should either enable on-chip pullup
devices or change the direction of unused pins to outputs so the pins do not
float.
, V
LL2
, V
MC9S08LC60 Series Advance Information Data Sheet, Rev. 2
LL3
, V
cap1
, and V
cap2
PRELIMINARY
pins are dedicated to providing power to the LCD module.
NOTE
Chapter 6, “Parallel
Input/Output.”
Chapter 2 Pins and Connections
31