Operation; Basic Operation - NEC V850E/RS1 User Manual

11.4 Operation

11.4.1 Basic operation

(1) Set the operation mode, trigger mode, and conversion time for executing A/D conversion by using
the ADSCM0H, ADSCM0L, ADSCM1H, and ADVMS0 registers. When the CE bit of the
ADSCM0H register is set, conversion is started in the software trigger mode and the A/D converter
waits for a trigger.
(2) When A/D conversion is started, the voltage input to the selected analog input channel is sampled
by the sample & hold circuit.
(3) When comparison of the 10 bits is complete, the valid digital result is stored in the SAR register,
which is then transferred to and stored in the ADA0CRn register. At the same time, an A/D
conversion end interrupt request signal (INTAD) is generated.
A/D converter
operation
SAR
ADA0CRn
INTAD
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Chapter 11 A/D Converter
Figure 11-9: A/D Converter Basic Operation
Sampling time
Sampling
Undefined
User's Manual U16702EE3V2UD00
Conversion time
A/D conversion
Conversion
result
Conversion
result