MC68HC908GP20 Datasheet, PDF (41/406 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

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.
1.6.14 Port E I/O Pins (PTE1/RxD–PTE0/TxD)
PTE0–PTE1 are general-purpose, bidirectional I/O port pins. These pins
can also be programmed to be serial communications interface (SCI)
pins. See Section 18. Serial Communications Interface Module (SCI)
and Section 16. Input/Output (I/O) Ports.
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
MC68HC908GP20 do not require termination, termination is
recommended to reduce the possibility of static damage.
MC68HC908GP20 — Rev 2.1
Freescale Semiconductor
Advance Information
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