C8051F980-C-GM Datasheet, PDF (65/325 Pages) Silicon Laboratories – Ultra Low Power, 8-2 kB Flash, Capacitive Sensing MCU

C8051F99x-C8051F98x
Table 4.16. Capacitive Sense Electrical Characteristics
V_DD = 1.8 to 3.6 V; T_A = –40 to +85 °C unless otherwise specified.
Parameter
Conditions
Min Typ Max Units
Single Conversion Time¹
12-bit Mode
20
25
40
µs
13-bit Mode (default)
21
27 42.5
14-bit Mode
23
29
45
16-bit Mode
26
33
50
Number of Channels
24-pin Packages
17
Channels
20-pin Packages
16
Capacitance per Code
Default Configuration
—
1
—
fF
Maximum External 
Capacitive Load
CS0CG = 111b (Default)
CS0CG = 000b
—
45
—
pF
— 500 —
pF
Maximum External 
Series Impedance
CS0CG = 111b (Default)
—
50
—
k
Power Supply Current
CS module bias current, 25 °C
—
50
60
µA
CS module alone, maximum code
output, 25 °C
—
90 125
µA
Wake-on-CS threshold (suspend mode — 130 180
µA
with regulator and CS module on)³
Notes:
1. Conversion time is specified with the default configuration.
2. RMS Noise is equivalent to one standard deviation. Peak-to-peak noise encompasses ±3.3 standard
deviations. The RMS noise value is specified with the default configuration.
3. Includes only current from regulator, CS module, and MCU in suspend mode.
Rev. 1.2
65