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Name
AD23–AD0
V
REFH
V
REFL
V
DDA
V
SSA
17.3.1 Analog Power (V
The ADC analog portion uses V
connected internally to V
voltage potential as V
good results.
17.3.2 Analog Ground (V
The ADC analog portion uses V
connected internally to V
voltage potential as V
17.3.3 Voltage Reference High (V
V
is the high reference voltage for the converter. In some packages, V
REFH
connected internally to V
same potential as V
DDA
V
specified in the data sheet and the V
DDA
V
).
DDA
17.3.4 Voltage Reference Low (V
V
is the low-reference voltage for the converter. In some packages, V
REFL
connected internally to V
voltage potential as V
NXP Semiconductors
Table 17-4. Signal Properties
)
DDA
as its power connection. In some packages, V
DDA
. If externally available, connect the V
DDX
. External filtering may be necessary to ensure clean V
DDX
)
SSA
as its ground connection. In some packages, V
SSA
. If externally available, connect the V
SS
.
SS
. If externally available, V
DDA
or may be driven by an external source between the minimum
. If externally available, connect the V
SSA
.
SSA
MC9S08SU16 Reference Manual, Rev. 5, 4/2017
Chapter 17 Analog-to-digital converter (ADC)
Function
Analog Channel inputs
High reference voltage
Low reference voltage
Analog power supply
Analog ground
)
REFH
may be connected to the
REFH
potential (V
DDA
REFH
)
REFL
DDA
pin to the same
DDA
for
DDA
SSA
pin to the same
SSA
is
REFH
must never exceed
is
REFL
pin to the same
REFL
is
is
261
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