STMicroelectronics STM32L476G-EVAL - Figure 48. Touch-Sensing Device Schematic Diagram

UM1855 Schematic diagrams
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Figure 48. Touch-sensing device schematic diagram
17 25
Touch Sensing
MB1144 B-02
6/24/2015
Title:
Size: Reference:
Date: Sheet: of
A4
Revision:
STM32L476G-EVAL
Project:
<----Touch Sensing diameter 10mm min on active shield diameter 12mm min
R40
10K
SHIELD
SHIELD_CS
TS1
TS_PAD
ESD resistor close to MCU pad
TKEY_CS
C37
22nF(COG)GRM3195C1H223JA01L
R37
1K
C34
220nF
TKEY
PB12
PB13
PC6
PC7