MC68HC908KX8 Datasheet, PDF (35/310 Pages) Motorola, Inc – Microcontrollers

General Description
Pin Assignments
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 MC68HC908KX8
do not require termination, termination is recommended to reduce the
possibility of static damage.
1.5.5 Analog Reference Pin (V_REFH)
The V_REFH pin is the analog reference voltage for the analog-to-digital
converter (ADC) module. The voltage is supplied through a double-bond
to the V_DD pin. See Section 20. Electrical Specifications for ADC
parameters.
1.5.6 Port B Input/Output (I/O) Pins (PTB7/(OSC2)/RST–PTB0/AD0)
PTB7/(OSC2)/RST–PTB0/AD0 are general-purpose bidirectional I/O
port pins, all sharing special functions.
• PTB7 and PTB6 share with the on-chip oscillator circuit through
configuration options. See 7.4.3 External Clock Generator.
• PTB5 and PTB4 share with the SCI module. See Section 14.
Serial Communications Interface Module (SCI).
• PTB3–PTB0 share with the ADC module. See Section 17.
Analog-to-Digital Converter (ADC).
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
MOTOROLA
General Description
Technical Data
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