MC68HC908GR8 Datasheet, PDF (26/286 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

General Description
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.
When the port pins are configured for special-function mode (SPI, TIM1, TIM2), pullups can be selectable
on an individual port pin basis.
1.5.12 Port E I/O Pins (PTE1/RxD–PTE0/TxD)
PTE1–PTE0 are special-function, bidirectional I/O port pins. These pins can also be programmed to be
serial communications interface (SCI) pins. See Chapter 18 Serial Communications Interface (SCI) and
See Chapter 16 Input/Output Ports (I/O).
NOTE
Any unused inputs and I/O ports should be tied to an appropriate logic level
(either V_DD or V_SS). Although the I/O ports of the MC68HC908GR8 do not
require termination, termination is recommended to reduce the possibility
of electro-static discharge damage.
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
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Freescale Semiconductor