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User’s Manual U19780EJ2V0UD
322
CHAPTER 12 A/D CONVERTER
78K0/KB2-A
Note
78K0/KC2-A
Items
30 pins
48 pins
A/D converter
10 ch (ANI0 to ANI5, ANI8 to ANI11)
12 ch (ANI0 to ANI6, ANI8 to ANI11, ANI15)
Note
As the AV
REFM
and AV
REFP
are not mounted on78K0/KB2-A, replace AV
REFP
with AV
REF
, respectively.
12.1 Function of A/D Converter
The A/D converter is a 12-bit resolution converter that converts analog input signals into digital values, and is
configured to control a total of twelve channels of analog inputs, including up to twelve channels of A/D converter analog
inputs (ANI0 to ANI6, ANI8 to ANI11, ANI13).
In products with operational amplifier, ANI1, ANI4, and ANI9 functions alternately as operational amplifier 0, 1, and 2
output (AMP0OUT, AMP1OUT, AMP2OUT). This enables using operational amplifier output as an analog input source.
The operation mode of A/D converter has the following four functions.
•
Software trigger mode (continuously convert mode)
•
Software trigger mode (single convert mode)
•
Timer trigger mode (continuously convert mode)
•
Timer trigger mode (single convert mode)