mc9s08gt32a Freescale Semiconductor, Inc, mc9s08gt32a Datasheet - Page 84

• Manufacturer Part Number: mc9s08gt32a
• Description: Hcs08 Microcontrollers 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

Chapter 6 Parallel Input/Output
6.3.6
Port F is an 8-bit port general-purpose I/O that is not shared with any peripheral module. Port F has high
current output drivers.
Port F pins are available as general-purpose I/O pins controlled by the port F data (PTFD), data direction
(PTFDD), pullup enable (PTFPE), and slew rate control (PTFSE) registers. Refer to
I/O
6.3.7
Port G is an 8-bit port which is shared among the background/mode select function, oscillator, and
general-purpose I/O. When the background/mode select function or oscillator is enabled, the pin direction
will be controlled by the module function.
Port G pins are available as general-purpose I/O pins controlled by the port G data (PTGD), data direction
(PTGDD), pullup enable (PTGPE), and slew rate control (PTGSE) registers. Refer to
I/O
The internal pullup for PTG0 is enabled when the background/mode select function is enabled, regardless
of the state of PTGPE0. During reset, the BKGD/MS pin functions as a mode select pin. After the MCU
is out of reset, the BKGD/MS pin becomes the background communications input/output pin. The PTG0
can be configured to be a general-purpose output pin. Refer to
Chapter 5, “Resets, Interrupts, and System
more information about using this pin.
The ICG module can be configured to use PTG2–PTG1 ports as crystal oscillator or external clock pins.
Refer to
oscillator pins.
84
Controls”
Controls”
Port G
Port F
Chapter 13, “Inter-Integrated Circuit
Port F and High-Current Drivers
Port G, BKGD/MS, and Oscillator
for more information about general-purpose I/O control.
for more information about general-purpose I/O control.
MCU Pin:
MCU Pin:
PTG7
PTF7
Bit 7
Bit 7
MC9S08GB60A Data Sheet, Rev. 1.02
PTG6
PTF6
Figure 6-8. Port G Pin Names
Figure 6-7. Port F Pin Names
6
6
Configuration”, and
(S08IICV1)” for more information about using these pins as
PTG5
PTF5
5
5
PTG4
PTF4
4
4
Chapter 3, “Modes of
Chapter 15, “Development
PTG3
PTF3
3
3
EXTAL
PTG2/
PTF2
2
2
PTG1/
XTAL
PTF1
Section 6.4, “Parallel
Section 6.4, “Parallel
Freescale Semiconductor
1
1
Operation”,
BKGD/MS
Support” for
PTG0/
PTF0
Bit 0
Bit 0