MC68HC05P9ACDW FREESCALE [Freescale Semiconductor, Inc], MC68HC05P9ACDW Datasheet - Page 119

• Manufacturer Part Number: MC68HC05P9ACDW
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Operation
Pin Functions
PC7/V
7-mc68hc05p9a
MOTOROLA
Addr.
$001D ADC Data Register (ADDR)
$001E ADC Status/Control Register (ADSCR)
RH
Name
The A/D conversion process is ratiometric, using two reference voltages,
V
V
The ADC uses five pins and shares them with port C:
The voltage reference high pin (PC7/V
voltage for the ratiometric conversion process. For ratiometric
conversion, the supply voltage of the analog source should be the same
as V
RH
DD
•
•
Freescale Semiconductor, Inc.
.
and V
RH
Table 24. ADC I/O Register Summary
For More Information On This Product,
PC7/V
PC6/AN0, PC5/AN1, PC4/AN2, and PC3/AN3
and be referenced to V
SS
. Conversion accuracy is guaranteed only if V
Read:
Write:
Read:
Write:
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R/W
Reset:
Reset:
RH
Bit 7
Bit 7
CCF
0
ADC
= Unimplemented
ADRC
6
6
0
SS
ADON
.
5
5
0
Unaffected by reset
RH
4
4
0
0
) supplies the high reference
3
3
0
0
CH2
2
2
0
RH
CH1
is equal to
1
1
0
Operation
Bit 0
Bit 0
CH0
ADC
0
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