MC9S12T64 Datasheet, PDF (504/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Analog to Digital Converter (ATD)
channels sampled is determined by the sequence length value (S8C,
S4C, S2C, S1C). The first analog channel examined is determined by
channel selection code (CC, CB, CA control bits); subsequent
channels sampled in the sequence are determined by incrementing
the channel selection code.
CC, CB, CA — Analog Input Channel Select Code
These bits select the analog input channel(s) whose signals are
sampled and converted to digital codes. Table 93 lists the coding
used to select the various analog input channels. In the case of single
channel scans (MULT=0), this selection code specifies the channel to
be examined. In the case of multi-channel scans (MULT=1), this
selection code represents the first channel to be examined in the
conversion sequence. Subsequent channels are determined by
incrementing channel selection code; selection codes that reach the
maximum value wrap around to the minimum value.
Table 93 Analog Input Channel Select Coding
CC
CB
CA
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Analog Input
Channel
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
MC9S12T64Revision 1.1.1
Analog to Digital Converter (ATD)
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