
General Description
Technical Data
MC68HC08AZ32A — Rev 1.0
34
General Description
MOTOROLA
1.4.8
ADC Reference High Voltage Pin (V
REFH
)
V
REFH
provides the reference high voltage for the Analog-to-Digital
Converter (ADC). See
Analog-to-Digital Converter (ADC-15)
on page
411.
1.4.9 ADC Analog Power Supply Pin (V
DDAREF
)
V
DDAREF
is the power supply pin for the analog portion of the Analog-to-
Digital Converter (ADC). See
Analog-to-Digital Converter (ADC-15)
on page 411.
1.4.10 External Filter Capacitor Pin (CGMXFC)
CGMXFC is an external filter capacitor connection for the Clock
Generator Module (CGM). See
Clock Generator Module (CGM)
on
page 117.
1.4.11 Port A Input/Output (I/O) Pins (PTA7
–
PTA0)
PTA7–PTA0 are general-purpose bidirectional I/O port pins. See
I/O
Ports
on page 293.
1.4.12 Port B I/O Pins (PTB7/ATD7–PTB0/ATD0)
Port B is an 8-bit special function port that shares all eight pins with the
Analog to Digital Convertor (ADC). See
Analog-to-Digital Converter
(ADC-15)
on page 411 and
I/O Ports
on page 293.
1.4.13 Port C I/O Pins (PTC5–PTC0)
PTC5
–
PTC3 and
PTC1
–
PTC0 are general-purpose bidirectional I/O
port pins. PTC2/MCLK is a special function port that shares its pin with
the system clock. See
I/O Ports
on page 293.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.