Product Specs

37 SAADC — Successive approximation analog-
to-digital converter
Page
389
37.11.41 RESULT.PTR
Address offset: 0x62C
Data pointer
Bit number
31 30
29
28
27
26
25
24
23 22 21 20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Id
A A
A
A
A
A
A
A
A A A A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Reset 0x00000000
0 0
0
0
0
0
0
0
0 0 0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Id
RW Field
Value Id
Value
Description
A RW PTR Data pointer
37.11.42 RESULT.MAXCNT
Address offset: 0x630
Maximum number of buffer words to transfer
Bit number
Id
Reset 0x00000000
31 30
0 0
29
0
28
0
27
0
26
0
25
0
24
0
23 22 21 20
0 0 0 0
19
0
18
0
17
0
16
0
15
0
14
A
0
13
A
0
12
A
0
11
A
0
10
A
0
9
A
0
8
A
0
7
A
0
6
A
0
5
A
0
4
A
0
3
A
0
2
A
0
1
A
0
0
A
0
Id RW Field
Value Id
Value
Description
A RW MAXCNT Maximum number of buffer words to transfer
37.11.43 RESULT.AMOUNT
Address offset: 0x634
Number of buffer words transferred since last START
Bit number
Id
Reset 0x00000000
31 30
0 0
29
0
28
0
27
0
26
0
25
0
24
0
23 22 21 20
0 0 0 0
19
0
18
0
17
0
16
0
15
0
14
A
0
13
A
0
12
A
0
11
A
0
10
A
0
9
A
0
8
A
0
7
A
0
6
A
0
5
A
0
4
A
0
3
A
0
2
A
0
1
A
0
0
A
0
Id RW Field
Value Id
Value
Description
A R AMOUNT Number of buffer words transferred since last START. This register
can be read after an END or STOPPED event.
37.12 Electrical specification
37.12.1 SAADC Electrical Specification
Symbol
Description
Min.
Typ.
Max.
Units
DNL
Differential non-linearity, 10-bit resolution
-0.95
<1
LSB
INL
Integral non-linearity, 10-bit resolution
1
LSB
V
OS
Differential offset error (calibrated), 10-bit resolution
a
+-2
LSB
C
EG
Gain error temperature coefficient
0.02
%/◦C
f
SAMPLE
Maximum sampling rate
200
kHz
t
ACQ,10k
Acquisition time (configurable), source Resistance <= 10kOhm
3
µs
t
ACQ,40k
Acquisition time (configurable), source Resistance <= 40kOhm
5
µs
t
ACQ,100k
Acquisition time (configurable), source Resistance <= 100kOhm
10
µs
t
ACQ,200k
Acquisition time (configurable), source Resistance <= 200kOhm
15
µs
t
ACQ,400k
Acquisition time (configurable), source Resistance <= 400kOhm
20
µs
t
ACQ,800k
Acquisition time (configurable), source Resistance <= 800kOhm
40
µs
t
CONV
Conversion time
<2
µs
I
ADC,CONV
ADC current during ACQuisition and CONVersion
700
µA
I
ADC,IDLE
Idle current, when not sampling, excluding clock sources and
regulator base currents
33
<5
µA
a Digital output code at zero volt differential input.
33 When t
ACQ
is 10us or longer, and if DC/DC is active, it will be allowed to work in refresh mode if no other
resource is requiring a high quality power supply from 1V3. If t
ACQ
is smaller than 10us and DC/DC is active,