Setup Procedure - Panasonic MN101L Series User Manual

Chapter 16
A/D Converter (ADC)
16.3.2

Setup Procedure

Initial setup of A/D conversion operation
The following flow chart shows the initial setup procedure of A/D conversion operation.
After initial setup, the A/D conversion is started, when the selected A/D conversion start factor occurs.
The conversion completion can be confirmed by monitoring A/D conversion interrupt or the ANCTR2.ANST.
When the conversion is restarted by changing the setting after the A/D conversion, set the
ANCTR0.ANLADE to "0" to change the setup after stopping an analog circuit.
Note that operation is not guaranteed if the procedures above are not properly conducted.
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After setting the ANCTR0.ANLADE to "1" and waiting for 12 conversion clocks, start A/D con-
version.
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XVI - 12 Operation
//Analog input pin setting
//Analog pin function selection
//Channel selection
ANCTR1.ANCHS2-0 = "ANn"
//A/D conversion clock, S/H time setting
ANCTR0.ANCK2-0 = "any"
ANCTR0.ANSH1-0 = "any"
ANCTR0.ANLADE = 0
//A/D converion star factor selection
ANCTR2.ANSTSEL1-0 = "any"
Figure:16.3.2 Initial setup procedure of A/D conversion operation
START
ANEN0.ANEN0 = 1
PnDIR.PnDIRm = 0
PnPLU.PnPLUm = 0
PnODC.PnODCm = 0
//A/D resistor ladder ON
ANCTR0.ANLADE = 1
END