Datasheet

Schematics UM01018 40/42 Doc ID 18141 Rev 2
Figure 26. Touch sensing
1
1
2
2
3
3
4
4
D D
C C
B B
A A
STMicroelectronics
Title:
Number: Rev: Sheet of
B.4(PCB.SCH)
Date:
9/7/2011MB819 14 14
STM32L152-EVAL Touch Sensing
C11
GRM3195C1H333JA01D
C18
[N/A]
R13
10K
R14
10K
R23 [N/A]
R22 [N/A]
R24 [N/A]
TS_LOAD
TS1
TS2
TS_SHIELD
TS_CT
TS1
TS_PAD
TS2
TS_PAD
R29
0
PB2
PC6
PC7
PC8
PC9
<----ESD resistor close to MCU pad
<----Touch Sensing diameter 10mm min on active shield diameter 12mm min
<----Active shield
Mount for RC mode by default
Mount only for Charge transfer mode--->