XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 476

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

Analog-to-Digital Converter (ADC)
26.6.2 Stop Mode
26.7 I/O Signals
26.7.1 ADC Analog Power Pin (V
26.7.2 ADC Analog Ground Pin (V
26.7.3 ADC Voltage In (ADCVIN)
Technical Data
476
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. Refer to
below.
The ADC analog portion uses V
V
filtering may be necessary to ensure clean V
V
Route V
capacitors as close as possible to the package. V
present for operation of the ADC.
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
REFL
/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)
DDAREF
ADC Characteristics
SSA
pin to the same voltage potential as V
carefully for maximum noise immunity and place bypass
)/ADC Voltage Reference Low Pin (V
)/ADC Voltage Reference Pin (V
SSA
DDAREF
on page 534 for voltages referenced
as its ground pin. Connect the V
SS
.
as its power pin. Connect the
DDAREF
MC68HC908AZ60A — Rev 2.0
DDAREF
for good results.
REFH
DD
REFL
. External
must be
)
)
MOTOROLA
SSA