mc9s08qd4 Freescale Semiconductor, Inc, mc9s08qd4 Datasheet - Page 101

• Manufacturer Part Number: mc9s08qd4
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

8.2.1
The ADC analog portion uses V
internally to V
External filtering may be necessary to ensure clean V
8.2.2
The ADC analog portion uses V
internally to V
8.2.3
V
V
driven by an external source that is between the minimum V
must never exceed V
8.2.4
V
V
8.2.5
The ADC module supports up to 28 separate analog inputs. An input is selected for conversion through
the ADCH channel select bits.
8.3
These memory mapped registers control and monitor operation of the ADC:
8.3.1
This section describes the function of the ADC status and control register (ADCSC1). Writing ADCSC1
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, ADCSC1
Status and control register, ADCSC2
Data result registers, ADCRH and ADCRL
Compare value registers, ADCCVH and ADCCVL
Configuration register, ADCCFG
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 (ADCSC1)
DD
SS
. If externally available, connect the V
. If externally available, connect the V
DDAD
).
DDAD
SSAD
MC9S08QD4 Series MCU Data Sheet, Rev. 3
REFH
DDAD
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
.
101
.