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Figure 33. STM32091C-EVAL touch sensing
12
14
Touch Sensing
MB1169
B.1
7/25/2014
Title:
Size:
Reference:
Date:
Sheet:
of
A4
Revision:
STM32091C-EVAL
Project:
R24
10K
R25
10K
TS1
TS2
SHIELD
SHIELD_CT
TS2
TS_PAD
TS1
TS_PAD
R37
0
PD12
PD13
PB12
PB11
<----ESD resistor close to MCU pad
<----Touch Sensing diameter 10mm min on active shield diameter 12mm min
<----Active shield
TS_CT
C4
22nF(COG)GRM3195C1H223JA01L
PD14
SB8
SB7
DB_PD12
DB_PD13
DB_PD14
SB6
SB10
DB_PB11
R30
1K
SB9
DB_PB12
C8
220nF