MC68HC908GT16_07 FREESCALE [Freescale Semiconductor, Inc], MC68HC908GT16_07 Datasheet - Page 28

• Manufacturer Part Number: MC68HC908GT16_07
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

General Description
1.5.7 Port A Input/Output (I/O) Pins (PTA7/KBD7–PTA0/KBD0)
PTA7–PTA0 are general-purpose, bidirectional I/O port pins. Any or all of the port A pins can be
programmed to serve as keyboard interrupt pins. See
Chapter 9 Keyboard Interrupt Module
These port pins also have selectable pullups when configured for input mode. The pullups are disengaged
when configured for output mode. The pullups are selectable on an individual port bit basis.
1.5.8 Port B I/O Pins (PTB7/AD7–PTB0/AD0)
PTB7–PTB0 are general-purpose, bidirectional I/O port pins that can also be used for analog-to-digital
converter (ADC) inputs. See
Analog-to-Digital Converter
1.5.9 Port C I/O Pins (PTC6–PTC0)
PTC6–PTC0 are general-purpose, bidirectional I/O port pins. PTC0–PTC4 have higher current
sink/source capability. PTC5 and PTC6 are only available on the 44-pin QFP package.
These port pins also have selectable pullups when configured for input mode. The pullups are disengaged
when configured for output mode. The pullups are selectable on an individual port bit basis. See
Chapter 12 Input/Output (I/O) Ports
1.5.10 Port D I/O Pins (PTD7/T2CH1–PTD0/SS)
PTD7–PTD0 are special-function, bidirectional I/O port pins. PTD0–PTD3 can be programmed to be
serial peripheral interface (SPI) pins, while PTD4–PTD7 can be individually programmed to be timer
interface module (TIM1 and TIM2) pins. See
Peripheral Interface (SPI)
These port pins also have selectable pullups when configured for input mode. The pullups are disengaged
when configured for output mode. The pullups are selectable on an individual port bit basis.
1.5.11 Port E I/O Pins (PTE4–PTE2, PTE1/RxD, and PTE0/TxD)
PTE0–PTE4 are general-purpose, bidirectional I/O port pins. PTE0–PTE1 can also be programmed to be
serial communications interface (SCI) pins. See
(ESCI) Module
PTE3 and PTE4 can also be programmed to be clock or oscillator pins. See
Register (CONFIG)
28
Any unused inputs and I/O ports should be tied to an appropriate logic level
(either V
termination is recommended to reduce the possibility of static damage.
and
MC68HC908GT16 • MC68HC908GT8 • MC68HC08GT16 Data Sheet, Rev. 5.0
Chapter 12 Input/Output (I/O) Ports
and
DD
Chapter 12 Input/Output (I/O) Ports
Module, and
or V
(ADC).
Chapter 12 Input/Output (I/O) Ports (PORTS)
SS
). Although the I/O ports do not require termination,
(PORTS).
(KBI).
Chapter 12 Input/Output (I/O) Ports
Chapter 18 Timer Interface Module
Chapter 14 Enhanced Serial Communications Interface
NOTE
Chapter 12 Input/Output (I/O) Ports (PORTS)
(PORTS).
(PORTS).
and
(PORTS).
Chapter 4 Configuration
Chapter 3
(TIM),
Freescale Semiconductor
Chapter 16 Serial
and