MC68HC08AZ16 Datasheet, PDF (308/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Analog-to-Digital Converter (ADC)
I/O signals
I/O signals
The ADC module has eight I/O that are shared with Port B.
ADC analog
power pin
(V_DDAREF)
NOTE:
The ADC analog portion uses as its power pin. Connect the V_DDAREF pin
to the same voltage potential as V_DD. External filtering may be necessary
to ensure clean V_DDAREF for good results.
Route V_DDAREF carefully for maximum noise immunity and place bypass
capacitors as close as possible to the package.
ADC analog
ground pin
(A_VSS/VREFL)
ADC voltage
reference pin
(VREFH)
The ADC analog portion uses A_VSS/VREFL as its ground pin. Connect
the A_VSS/VREFL pin to the same voltage potential as V_SS.
VREFH is the reference voltage for the ADC.
ADC voltage in
(ADVIN)
ADVIN is the input voltage signal from one of the eight ADC channels to
the ADC module.
7-adc
MOTOROLA
Analog-to-Digital Converter (ADC)
MC68HC08AZ32
307