Datasheet

1013

42023E–SAM–07/2013

ATSAM4L8/L4/L2

• ZOOMRANGE: Zoom shift/unipolar reference source selection

• MUXNEG: MUX selection on Negative ADC input channel

• MUXPOS: MUX selection on Positive ADC input channel

ZOOMRANGE Mode Comment

000 Select Vref for shift cycle All modes except zoom and unipolar with hysteresis

001 Select Vdd/4 for shift cycle Zoom mode

010 Select Vdd/2 for shift cycle Zoom mode

011 Select 3*Vdd/4 for shift cycle Zoom mode

1XX Select 0.9*Vref for shift cycle Unipolar mode with hysteresis

BIPOLAR INTERNAL MUXNEG Negative input to ADC

0 0X XXX primary_anahot_XXX tied to ground

0 1X 001 or 111 Pad Ground

1 0X 000 primary_anahot_0

1 0X 001 primary_anahot_1

1 0X 010 primary_anahot_2

1 0X 011 primary_anahot_3

1 0X 100 primary_anahot_4

1 0X 101 primary_anahot_5

1 0X 110 primary_anahot_6

1 0X 111 primary_anahot_7

1 1X 000 Vsingle = 0.9*Vref

1 1X 001 Pad Ground

1 1X 010 Vcalib3 = Vref/10

1 1X 011 Reference Ground

1 1v 100 Not used

1 1X 101 Vcalib3 = Vref/10

1 1X 110 Not used

1 1X 111 Pad Ground

BIPOLAR INTERNAL MUXPOS Positive input to ADC

X X0 0000 AD0

X X0 0001 AD1

X X0 0010 AD2

X X0 0011 AD3