User`s guide

UDP SiM3U1xx
Rev. 0.2 7
Figure 6. UDP SiM3U1xx MCU Card Features
4.1. Push-Button Switches and LEDs (SW2, SW3, DS3, DS4)
The UDP SiM3U1xx MCU card has two push-button switches and two LEDs. The two switches connect to PB2.8
and PB2.9. The switches are normally open and pull the pin voltage to ground when pressed.
Port pins PB2.10 and PB2.11 also connect to two LEDs: DS3 and DS4. The LEDs connect to VIO through a current
limiting resistor.
When using PB2.8 and PB2.9 as switches and PB2.10 and PB2.11 as LEDs, the User Control switch (SW4) must
be in the ON position.
Potentiometer
Analog
Terminals
Push-Button Switches
LEDs
User Control Switch
Mini-B USB
Connector
for VCP
Mini-B USB
Connector
for USB
Debug
Connector
System Power Select Switch
Imeasure Jumpers
VIOHD Selection Jumper
Power LEDs
Reset Push-Button
Capacitive Sensing
Slider and Buttons