SIM3U1XX-B-DK Silicon_Laboratories, SIM3U1XX-B-DK Datasheet - Page 7

• Manufacturer Part Number: SIM3U1XX-B-DK
• Description: Specifications: Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant
• Manufacturer: Silicon_Laboratories

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.
Capacitive Sensing
Reset Push-Button
Slider and Buttons
Mini-B USB
Connector
for USB
Figure 6. UDP SiM3U1xx MCU Card Features
Connector
Terminals
Debug
Analog
Rev. 0.2
LEDs
Mini-B USB
Connector
for VCP
Potentiometer
UDP SiM3U1xx
VIOHD Selection Jumper
Imeasure Jumpers
Power LEDs
System Power Select Switch
User Control Switch
Push-Button Switches
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