MC68HC908GR16 Datasheet, PDF (26/310 Pages) Motorola, Inc – Microcontrollers

General Description
Freescale Semiconductor, Inc.
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 D I/O Pins (PTD7/T2CH1–PTD0/SS)
PTD7–PTD0 are special-function, bidirectional I/O port pins. PTD3–PTD0 can be
programmed to be serial peripheral interface (SPI) pins, while PTD7–PTD4 can be
individually programmed to be timer interface module (TIM1 and TIM2) pins. See
Section 18. Timer Interface Module (TIM), Section 16. Serial Peripheral
Interface (SPI) Module, and Section 12. Input/Output Ports (PORTS).
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.
1.5.12 Port E I/O Pins (PTE5–PTE2, PTE1/RxD, and PTE0/TxD)
PTE5–PTE0 are general-purpose, bidirectional I/O port pins. PTE1 and PTE0 can
also be programmed to be enhanced serial communications interface (ESCI) pins.
See Section 14. Enhanced Serial Communications Interface (ESCI) Module
and Section 12. Input/Output Ports (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 MC68HC908GR16 do not require
termination, termination is recommended to reduce the possibility of static damage.
Data Sheet
26
General Description
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MC68HC908GR16 — Rev. 1.0
MOTOROLA