MC908AB32CFUE Datasheet, PDF (36/392 Pages) Freescale Semiconductor, Inc – Microcontrollers

General Description
1.6.8 ADC Voltage Reference Pin (VREFH)
VREFH is the power supply for setting the reference voltage VREFH.
Connect this pin to a voltage such that 1.5V < VREFH ≤ V_DDAREF.
1.6.9 Analog Supply Pin (V_DDAREF)
The V_DDAREF analog supply pin is used only for the supply connections
for the analog-to-digital convertor (ADC).
1.6.10 External Filter Capacitor Pin (CGMXFC)
CGMXFC is an external filter capacitor connection for the CGM. See
Section 9. Clock Generator Module (CGM).
1.6.11 Port A Input/Output (I/O) Pins (PTA7–PTA0)
PTA7–PTA0 are general-purpose bidirectional I/O port pins. See
Section 17. Input/Output (I/O) Ports.
1.6.12 Port B I/O Pins (PTB7/ATD7–PTB0/ATD0)
PTB7–PTB0 are special function, bidirectional port pins. PTB7–PTB0
are shared with the analog to digital convertor (ADC) input pins
ATD7–ATD0. See Section 14. Analog-to-Digital Converter (ADC) and
Section 17. Input/Output (I/O) Ports.
1.6.13 Port C I/O Pins (PTC5–PTC0)
PTC5–PTC0 are general-purpose bidirectional I/O port pins. PTC2 is a
special function port pin that is shared with the system clock output pin,
MCLK. See Section 17. Input/Output (I/O) Ports.
Technical Data
36
General Description
MC68HC908AB32 — Rev. 1.1
Freescale Semiconductor