CHAPTER 11 A/D CONVERTER
User’s Manual U13850EJ4V0UM
347
(6) ANI0 to ANI11 pins
These are analog input pins for the 12 channels of the A/D converter, and are used to input the analog signals to
be converted into digital signals. Pins other than ones selected as analog input with the analog input channel
specification register (ADS) can be used as input ports.
Caution Make sure that the voltages input to ANI0 to ANI11 do not exceed the rated values. If a
voltage higher than AV
REF
or lower than AV
SS
(even within the range of the absolute maximum
ratings) is input to a channel, the conversion value of the channel is undefined, and the
conversion values of the other channels may also be affected.
(7) AV
REF
pin
This pin inputs a reference voltage to the A/D converter.
The signals input to the ANI0 to ANI11 pins are converted into digital signals based on the voltage applied across
AV
REF
and AV
SS
.
(8) AV
SS
pin
This is the ground pin of the A/D converter. Always keep the potential at this pin the same as that at the V
SS
pin
even when the A/D converter is not in use.
(9) AV
DD
pin
This is the analog power supply pin of the A/D converter. Always keep the potential at this pin the same as that
at the V
DD
pin even when the A/D converter is not in use.
Содержание MPD703030A
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