STM8T143 STMicroelectronics, STM8T143 Datasheet - Page 43

• Manufacturer Part Number: STM8T143
• Description: Single-channel capacitive sensor for touch and proximity detection
• Manufacturer: STMicroelectronics

STM8T143
Table 17.
1. Min and max values for f
2. If Data streaming mode is activated, t
3. t
4. Response time for detection depends on the event occurrence time during the acquisition period, the threshold settings,
5. The device startup time is the time after power-up before any possible actuation.
Streaming mode
and the signal strength.
AET
Symbol
t
EDDC
RECAL
DDC
V
depends on the C
t
CXL
SU
General capacitive sensing characteristics (continued)
Table 18.
1. This bit is also used for EPCC selection. Please refer to
characteristics.
Time after recalibration before optimal device
sensitivity (see
Note: this value depends on the signal variation
including noise level
Device startup time
Detection debounce count (touch)
Detection debounce count (proximity)
End of detection debounce count (touch)
End of detection debounce count (proximity)
Low state voltage value on C
ICS2
Internal sampling capacitor selection bits (ICS)
X
0
0
0
0
1
1
1
1
capacitance value. This typical value is given for an electrode of 18 pF
TRANSFER
(1)
Internal C
are given for a 3 V to 5.5 V operating range.
Section 6: Device
SAMPLING
(5)
Parameter
S
value
ICS1
is increased by the data frame period. Please refer to
0
0
1
1
0
0
1
1
Doc ID 18315 Rev 3
X
during burst
operation).
ICS0
Table 19: Implemented EPCC values
0
1
0
1
0
1
0
1
Min
Typ
354
0.6
C
51
2
6
2
3
S
Electrical characteristics
capacitance value (nF)
Max
Section 9.6:
17.5
Typ
1.5
4.5
11
2
3
5
6
(pF).
t
SAMPLING
Unit
V
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