MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 234

• Manufacturer Part Number: MC68HC908AB32
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

Analog-to-Digital Converter (ADC)
14.7.1 ADC Analog Power Pin (V
14.7.2 ADC Analog Ground Pin (A
14.7.3 ADC Voltage Reference High Pin (V
14.7.4 ADC Voltage In (V
14.8 I/O Registers
Technical Data
234
NOTE:
NOTE:
The ADC analog portion uses V
V
may be necessary to ensure clean V
For maximum noise immunity, route V
bypass capacitors as close as possible to the package.
The ADC analog portion uses A
the A
Route A
V
V
the ADC module.
These I/O registers control and monitor ADC operation:
DDAREF
REFH
ADIN
•
•
•
Freescale Semiconductor, Inc.
ADIN
For More Information On This Product,
VSS
ADC status and control register (ADSCR)
ADC data register (ADR)
ADC clock register (ADCLK)
is the input voltage signal from one of the eight ADC channels to
is the reference voltage for the ADC.
VSS
)
/V
Analog-to-Digital Converter (ADC)
pin to the same voltage potential as V
REFL
DDAREF
/V
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VSS
REFL
pin to the same voltage potential as V
/V
)
REFL
cleanly to avoid any offset errors.
REFH
)
)
DDAREF
VSS
/V
DDAREF
REFL
DDAREF
as its power pin. Connect the
as its ground pin. Connect
for good results.
carefully and place
MC68HC908AB32
DD
. External filtering
SS
.
MOTOROLA
—
Rev. 1.0