STM8T143AU62TTR Datasheet, PDF (45/65 Pages) STMicroelectronics – Single-channel capacitive sensor for touch and proximity detection

STM8T143
Electrical characteristics
9.7
9.7.1
9.7.2
EMC characteristics
Susceptibility and emission tests are performed on a sample basis during product
characterization.
Both the sample and its applicative hardware environment are mounted on a dedicated
specific EMC board defined in the IEC61967-1 standard.
Functional EMS (electromagnetic susceptibility)
While running in the above described environment the product is stressed by two
electromagnetic events until a failure occurs.
• ESD: Electrostatic discharge (positive and negative) is applied on all pins of the device
until a functional disturbance occurs. This test complies with the IEC 1000-4-2
standard.
• FTB: A burst of fast transient voltage (positive and negative) is applied to V_DD and V_SS
through a 100 pF capacitor, until a functional disturbance occurs. This test complies
with the IEC 1000-4-4 standard.
A device reset allows normal operations to be resumed. The test results are given in
Table 21 based on the EMS levels and classes defined in application note AN1709.
Prequalification trials
Symbol
Table 21. EMS data
Parameter
Conditions
Level/class
Fast transient voltage burst limits to be
V_DD= 5 V, T_A=+25 °C,
V_EFTB applied through 100pF on V_DD and V_SS pins UFDFPN8 package, complies
4A
to induce a functional disturbance
with IEC 1000-4-4
9.7.3
Electromagnetic interference (EMI)
Emission tests conform to the IEC61967-2 standard for board layout and pin loading. Worse
case EMI measurements are performed during maximum device activity.
Symbol Parameter
Table 22. EMI data
General conditions
Monitored
frequency band
S_EMI
Peak level
SAE EMI level
V_DD = 5 V, T_A = +25 °C,
UFDFPN8 package,
Complies with SAE
J1752/3, No finger on
touch electrode
0.1 MHz to 30 MHz
30 MHz to 130 MHz
130 MHz to 1 GHz
-
1. Data based on characterization results, not tested in production.
1RMC^OH^Sz^C(1=)
-4
-3
-4
1
Unit
dBµV
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