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11.4 A/D Converter Operation
11.4.1 Basic operation of A/D converter
A/D conversion is executed in the following order.
(1) The selection of the analog input and specification of the operation mode, trigger mode, etc. should be set in
the ADM0 and ADM1 registers
When the CE bit of the ADM0 register is set (1), A/D conversion starts in the A/D trigger mode. In the timer
trigger mode and external trigger mode, the trigger standby state
(2) The voltage generated from the voltage tap of the series resistor string and analog input are compared by the
comparator.
(3) When the comparison of the 10 bits ends, the conversion results are stored in the ADCRn register. When A/D
conversion is performed for the specified number of times, the A/D conversion end interrupt (INTAD) is
generated (n = 0 to 7).
Notes 1. When the ADM0 and ADM1 registers are changed during an A/D conversion operation, the A/D
conversion operation before the change is stopped and the conversion results are not stored in the
ADCRn register.
2. In the timer trigger mode and external trigger mode, if the CE bit of the ADM0 register is set to 1, the
mode changes to the trigger standby state. The A/D conversion operation is started by the trigger
signal, and the trigger standby state is returned when the A/D conversion operation ends.
CHAPTER 11 A/D CONVERTER
Note 1
.
User's Manual U12688EJ4V0UM00
Note 2
is set.
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