MC68HC08AZ32 Datasheet, PDF (295/424 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
Analog-to-Digital Converter (ADC)
I/O signals
I/O signals
The ADC module has 8 or 15 I/O that are shared with Port B and Port D.
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. V_DDAREF must be
present for operation of he ADC.
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 8 or 15 ADC channels
to the ADC module.
7-adc
MOTOROLA
Analog-to-Digital Converter (ADC)
For More Information On This Product,
Go to: www.freescale.com
MC68HC08AZ32
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