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ADC12 Operation
20-12 ADC12
Sequence-of-Channels Mode
A sequence of channels is sampled and converted once. The ADC results are
written to the conversion memories starting with the ADCMEMx defined by the
CSTARTADDx bits. The sequence stops after the measurement of the
channel with a set EOS bit. Figure 20−7 shows the sequence-of-channels
mode. When ADC12SC triggers a sequence, successive sequences can be
triggered by the ADC12SC bit. When any other trigger source is used, ENC
must be toggled between each sequence.
Figure 20−7. Sequence-of-Channels Mode
ADC12
off
x = CSTARTADDx
Wait for Enable
ENC =
Wait for Trigger
Sample, Input
Channel Defined in
ADC12MCTLx
ENC =
ENC =
SHSx = 0
and
ENC = 1 or
and
ADC12SC =
SAMPCON =
SAMPCON = 1
Convert
SAMPCON =
12 x ADC12CLK
Conversion
Completed,
Result Stored Into
ADC12MEMx,
ADC12IFG.x is Set
1 x ADC12CLK
ADC12ON = 1
CONSEQx = 01
MSC = 1
and
SHP = 1
and
EOS.x = 0
EOS.x = 1
If x < 15 then x = x + 1
else x = 0
If x < 15 then x = x + 1
else x = 0
(MSC = 0
or
SHP = 0)
and
EOS.x = 0
x = pointer to ADC12MCTLx