Renesas RX Family
6.2 Touch Interface
The RX MCU incorporates Capacitive Touch Sensing Unit (CTSU2SL), and the CTSU is connected to 2
touch buttons on the EK-RX261 v1.
EK-RX261 v1
Signal
Function
TS1
Electrostatic capacitance measurement pin
(Touch Button 1)
TS3
Electrostatic capacitance measurement pin
(Touch Button 2)
TSCAP
LPF (Low-pass filter) connection pin
Note: Two touch buttons are implemented on MCU Native Pin Access area, however, the Touch Interface is
described in section
6
"Special Feature Access Area" because the Touch Interface is functionally categorized
into Special Feature Access.
R20UT5351EG0100 Rev.1.00
Jul.31.24
Table 26. Touch Interface
Figure 33. Touch Buttons
Figure 34. Touch Interface Copper Jumpers (bottom side)
EK-RX261 v1 – User's Manual
RX MCU
Configuration
Port
Closed
P31
-
P27
-
PC4
-
Page 42 of 49
Open
-
-
E14
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