mc68hc908as60 Freescale Semiconductor, Inc, mc68hc908as60 Datasheet - Page 412

• Manufacturer Part Number: mc68hc908as60
• Description: Mc68hc908as60 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (ADC-15)
23.6.2 Stop Mode
23.7 I/O Signals
23.7.1 ADC Analog Power Pin (V
23.7.2 ADC Analog Ground Pin (V
23.7.3 ADC Voltage In (ADCVIN)
Technical Data
NOTE:
The ADC module is inactive after the execution of a STOP instruction.
Any pending conversion is aborted. ADC conversions resume when the
MCU exits stop mode. Allow one conversion cycle to stabilize the analog
circuitry before attempting a new ADC conversion after exiting stop
mode.
The ADC module has 15 channels that are shared with I/O ports B and
D and one channel with an input-only port bit on port D. Refer to
24.7 ADC Characteristics
The ADC analog portion uses V
V
filtering may be necessary to ensure clean V
V
Connect the V
V
Route V
capacitors as close as possible to the package.
The ADC analog portion uses V
pin to the same voltage potential as V
V
ADCVIN is the input voltage signal from one of the 15 ADC channels to
the ADC module.
DDA
REFH
DDAREF
REFL
Freescale Semiconductor, Inc.
For More Information On This Product,
/V
is the lower reference supply for the ADC.
is the high reference voltage for all analog-to-digital conversions.
DDAREF
DDAREF
Analog-to-Digital Converter (ADC-15)
/V
DDA
DDAREF
Go to: www.freescale.com
SSA
REFH
pin to the same voltage potential as V
depending on the desired upper conversion boundary.
carefully for maximum noise immunity and place bypass
)/ADC Voltage Reference Low Pin (V
)/ADC Voltage Reference Pin (V
pin to a voltage potential between 1.5 volts and
for voltages referenced in this section.
SSA
DDAREF
as its ground pin. Connect the V
SS
as its power pin. Connect the
.
DDAREF
MC68HC908AS60 — Rev. 1.0
REFH
for good results.
DD
REFL
. External
)
)
SSA