SIM3U1XX-B-DK Silicon_Laboratories, SIM3U1XX-B-DK Datasheet - Page 10

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

UDP SiM3U1xx
4.12. Capacitive Sensing Button and Slider (S1)
Two capacitive sensing buttons and one slider are included on the MCU card. Six GPIO pins are connected to the
slider and can be used to implement up to two buttons or a slider. Table 5 shows the J13 pin definitions. The GPIO
pins are connected to the slider in ascending order from the location labeled “A” to the location labeled “B” on the
MCU card.
4.13. Reset Button (SW1)
The reset push-button switch is in the lower-left corner. Pushing this button will always reset the MCU. Note that
pushing this button while the IDE is connected to the MCU will result in IDE disconnecting from the target.
4.14. Port Pin Headers (J5-J9)
All of the MCU port pins are available on the 0.100-inch headers on the MCU card. Some of these port pins are
shared with other functions on the board. For example, PB0.9 and PB0.10 are both used by the external RTC.
Several GPIO pins are connected to circuits in the User Control portion of the board as well. To disconnect these
GPIO pins from the additional circuits, place the User Control switch in the OFF position. PB1.12, PB1.13, PB.1.14,
and PB1.15 are either routed to the CP210x device or to the UDP Motherboard. For more information on the GPIO
pins used by the CP210x or UART interface, see Section 4.9.
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Table 5. Capacitive Sensing GPIO Connections
Location
—
—
—
—
A
B
Rev. 0.2
PB1.7
PB1.8
PB0.4
PB0.3
PB0.2
PB0.1
Pin