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Preliminary User’s Manual U14581EJ3V0UM00
CHAPTER 12 A/D CONVERTER
12.1 A/D Converter Functions
The A/D converter is an 8-bit resolution converter that converts analog inputs into digital values. It can control
up to 5 analog input channels (ANI0 to ANI4).
This A/D converter has the following functions:
(1) A/D conversion with 8-bit resolution
One channel of analog input is selected from ANI0 to ANI4, and A/D conversion is repeatedly executed with a
resolution of 8 bits. Each time the conversion has been completed, interrupt request (INTAD) is generated.
(2) Power-fail detection function
This function is to detect a voltage drop in the battery of an automobile. The result of A/D conversion (value of
the ADCR1 register) and the value of PFT register (PFT: power-fail compare threshold value register) are
compared. If the condition for comparison is satisfied, INTAD is generated.
Содержание mPD780851
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