
Bit 6: External trigger select (TRGE)
Bit 6 enables or disables the start of A/D conversion by external trigger input.
Bit 6
TRGE
Description
0
Disables start of A/D conversion by external trigger
(initial value)
1
Enables start of A/D conversion by rising or falling edge of external trigger at pin
ADTRG
*
Note:
*
The external trigger (
ADTRG
) edge is selected by bit INTEG4 of IEGR. See 1. Interrupt
edge select register (IEGR) in 3.3.2 for details.
Bits 5 and 4: Reserved bits
Bits 5 and 4 are reserved; they are always read as 1, and cannot be modified.
Bits 3 to 0: Channel select (CH3 to CH0)
Bits 3 to 0 select the analog input channel.
The channel selection should be made while bit ADSF is cleared to 0.
Bit 3
Bit 2
Bit 1
Bit 0
CH3
CH2
CH1
CH0
Analog Input Channel
0
0
*
*
No channel selected
(initial value)
0
1
0
0
AN
0
0
1
0
1
AN
1
0
1
1
0
AN
2
0
1
1
1
AN
3
1
0
0
0
AN
4
1
0
0
1
AN
5
1
0
1
0
AN
6
1
0
1
1
AN
7
Note:
*
Don’t care
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