EFR32FG12 Datasheet, PDF (90/183 Pages) –

4.1.20 Capacitive Sense (CSEN)
EFR32FG12 Flex Gecko Proprietary Protocol SoC Family Data Sheet
Electrical Specifications
Table 4.46. Capacitive Sense (CSEN)
Parameter
Single conversion time (1x
accumulation)
Symbol
t_CNV
Maximum external capactive C_EXTMAX
load
Maximum external series im- R_EXTMAX
pedance
Supply current, EM2 bonded
conversions, WARMUP-
MODE=NORMAL, WAR-
MUPCNT=0
I_{CSEN_BOND}
Supply current, EM2 scan
conversions, WARMUP-
MODE=NORMAL, WAR-
MUPCNT=0
I_{CSEN_EM2}
Test Condition
Min
12-bit SAR Conversions
—
16-bit SAR Conversions
—
Delta Modulation Conversion (sin-
—
gle comparison)
CS0CG=7 (Gain = 1x), including
—
routing parasitics
CS0CG=0 (Gain = 10x), including
—
routing parasitics
—
12-bit SAR conversions, 20 ms
—
conversion rate, CS0CG=7 (Gain
= 1x), 10 channels bonded (total
capacitance of 330 pF)¹
Delta Modulation conversions, 20
—
ms conversion rate, CS0CG=7
(Gain = 1x), 10 channels bonded
(total capacitance of 330 pF)¹
12-bit SAR conversions, 200 ms
—
conversion rate, CS0CG=7 (Gain
= 1x), 10 channels bonded (total
capacitance of 330 pF)¹
Delta Modulation conversions,
—
200 ms conversion rate,
CS0CG=7 (Gain = 1x), 10 chan-
nels bonded (total capacitance of
330 pF)¹
12-bit SAR conversions, 20 ms
—
scan rate, CS0CG=0 (Gain =
10x), 8 samples per scan¹
Delta Modulation conversions, 20
—
ms scan rate, 8 comparisons per
sample (DMCR = 1, DMR = 2),
CS0CG=0 (Gain = 10x), 8 sam-
ples per scan¹
12-bit SAR conversions, 200 ms
—
scan rate, CS0CG=0 (Gain =
10x), 8 samples per scan¹
Delta Modulation conversions,
—
200 ms scan rate, 8 comparisons
per sample (DMCR = 1, DMR =
2), CS0CG=0 (Gain = 10x), 8
samples per scan¹
Typ
20.2
26.4
1.55
68
680
1
326
226
33
25
690
515
79
57
Max
Unit
—
μs
—
μs
—
μs
—
pF
—
pF
—
kΩ
—
nA
—
nA
—
nA
—
nA
—
nA
—
nA
—
nA
—
nA
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