MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 323

• Manufacturer Part Number: MC68HC708AS48
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

19.7.2 ADC Analog Ground Pin (V
19.7.3 ADC Voltage In (ADCVIN)
19.8 I/O Registers
MC68HC708AS48
MOTOROLA
NOTE:
—
Rev. 4.0
1.5 volts and V
boundary.
Route V
bypass capacitors as close as possible to the package.
The ADC analog portion uses V
pin to the same voltage potential as V
V
to a voltage potential between V
desired lower conversion boundary.
ADCVIN is the input voltage signal from one of the ADC channels to the
ADC module.
These I/O registers control and monitor ADC operation:
REFL
•
•
•
ADC status and control register (ADSCR)
ADC data register (ADR)
ADC clock register (ADICLK)
is the lower reference supply for the ADC. Connect the V
DDA
Analog-to-Digital Converter (ADC)
/V
SSA
DDAREF
DDAREF
)/ADC Voltage Reference Low Pin (V
/V
carefully for maximum noise immunity and place
DDA
depending on the desired upper conversion
SSA
SSA
as its ground pin. Connect the V
and 0.5 volts depending on the
SS
.
Analog-to-Digital Converter (ADC)
Advance Information
REFL
)
I/O Registers
REFL
SSA
pin
323