S9S08AW16A FREESCALE [Freescale Semiconductor, Inc], S9S08AW16A Datasheet - Page 249

• Manufacturer Part Number: S9S08AW16A
• Description: HCS08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

14.3.1
The ADC analog portion uses V
internally to V
External filtering may be necessary to ensure clean V
14.3.2
The ADC analog portion uses V
internally to V
14.3.3
V
V
driven by an external source that is between the minimum V
must never exceed V
14.3.4
V
V
14.3.5
The ADC module supports up to 28 separate analog inputs. An input is selected for conversion through
the ADCH channel select bits.
14.4
These memory mapped registers control and monitor operation of the ADC:
14.4.1
This section describes the function of the ADC status and control register (ADC1SC1). Writing ADC1SC1
aborts the current conversion and initiates a new conversion (if the ADCH bits are equal to a value other
than all 1s).
Freescale Semiconductor
REFH
DDAD
REFL
SSAD
•
•
•
•
•
•
. If externally available, connect the V
is the low reference voltage for the converter. In some packages, V
is the high reference voltage for the converter. In some packages, V
Status and control register, ADC1SC1
Status and control register, ADC1SC2
Data result registers, ADC1RH and ADC1RL
Compare value registers, ADC1CVH and ADC1CVL
Configuration register, ADC1CFG
Pin enable registers, APCTL1, APCTL2, APCTL3
. If externally available, V
Register Definition
Analog Power (V
Analog Ground (V
Voltage Reference High (V
Voltage Reference Low (V
Analog Channel Inputs (ADx)
Status and Control Register 1 (ADC1SC1)
DD
SS
. If externally available, connect the V
. If externally available, connect the V
DDAD
).
DDAD
SSAD
REFH
DDAD
MC9S08AC16 Series Data Sheet, Rev. 8
SSAD
as its ground connection. In some packages, V
as its power connection. In some packages, V
may be connected to the same potential as V
)
)
REFL
REFL
REFH
pin to the same voltage potential as V
DDAD
)
)
SSAD
DDAD
for good results.
DDAD
pin to the same voltage potential as V
pin to the same voltage potential as V
spec and the V
Analog-to-Digital Converter (S08ADC10V1)
REFL
REFH
is connected internally to
is connected internally to
DDAD
DDAD
DDAD
SSAD
potential (V
SSAD
, or may be
is connected
is connected
.
SS
REFH
DD
.
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.