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