mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 358

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (ADC)
19.7 I/O Signals
19.7.1 ADC Analog Power Pin (V
19.7.2 ADC Analog Ground Pin (V
19.7.3 ADC Voltage Reference Pin (V
19.7.4 ADC Voltage Decoupling Capacitor Pin (V
Technical Data
358
NOTE:
The ADC module has 10 I/O signals that are shared with port B and
port C.
The ADC analog portion uses V
V
necessary to ensure clean V
Route V
capacitors as close as possible to the package.
The ADC analog portion uses V
V
V
Connect the
V
with a value (V
decouple noise. V
reference value of (V
DDAREF
DDAD
SSAD
ADCAP
pin to the same voltage potential as V
pin to the same voltage potential as V
is the power supply for setting the reference voltage V
DDAD
is one of two reference supplies and is generated from V
Analog-to-Digital Converter (ADC)
DDAD
V
SSAD
carefully for maximum noise immunity and place bypass
DDAREF
DDAREF )
)
DDAREF
)
ADCAP
pin to the same voltage potential as
DDAREF )
/2. Place a bypass capacitor on this pin to
)
pin can also be used to drive an upper
DDAD
/2 with an external voltage reference.
ADCAP
DDAD
SSAD
for good results.
)
as its ground pin. Connect the
as its power pin. Connect the
DD
SS
. External filtering may be
MC68HC708MP16
.
Freescale Semiconductor
V DDA
REFH
.
—
DDAREF
Rev. 3.1
.