SAM4L Datasheet, PDF (1008/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

ATSAM4L4/L2
• ZOOMRANGE: Zoom shift/unipolar reference source selection
ZOOMRANGE
000
001
010
011
1XX
Mode
Select Vref for shift cycle
Select Vdd/4 for shift cycle
Select Vdd/2 for shift cycle
Select 3*Vdd/4 for shift cycle
Select 0.9*Vref for shift cycle
Comment
All modes except zoom and unipolar with hysteresis
Zoom mode
Zoom mode
Zoom mode
Unipolar mode with hysteresis
• MUXNEG: MUX selection on Negative ADC input channel
BIPOLAR
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
INTERNAL
0X
1X
0X
0X
0X
0X
0X
0X
0X
0X
1X
1X
1X
1X
1v
1X
1X
1X
MUXNEG
XXX
001 or 111
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
Negative input to ADC
primary_anahot_XXX tied to ground
Pad Ground
primary_anahot_0
primary_anahot_1
primary_anahot_2
primary_anahot_3
primary_anahot_4
primary_anahot_5
primary_anahot_6
primary_anahot_7
Vsingle = 0.9*Vref
Pad Ground
Vcalib3 = Vref/10
Reference Ground
Not used
Vcalib3 = Vref/10
Not used
Pad Ground
• MUXPOS: MUX selection on Positive ADC input channel
BIPOLAR
X
X
X
X
INTERNAL
X0
X0
X0
X0
MUXPOS
0000
0001
0010
0011
Positive input to ADC
primary_anahot_0
primary_anahot_1
primary_anahot_2
primary_anahot_3
42023C–SAM–02/2013
1008