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APPENDIX B
B.QFN Connectors
B.1 OVERVIEW
This appendix lists all connectors on the QFN Evaluation and Development Board. The sections that follow
provide descriptions for:
• Jumpers and their possible configurations
• Headers
• Switches and their possible configurations
• Connectors
B.2 CONFIGURATION HEADER JUMPERS
B.3 HEADERS
B.4 SWITCHES
Table 8. Jumper Descriptions
Designator Description
P4 Regulated or Unregulated power supply selection
P10 VBAT Power Source selection (3.3 V, Vext or Battery)
P9 VDDO selection (VBAT_DUT, 3.3 V)
P8 VDD_AT selection (3.3 V, VDDO)
P1 Onboard JTAG debugger connection
Table 9. Header Descriptions
Designator Description
POWER1 Arduino Power header 3.3V, VDDO, nRESET, GND
AD1 Arduino Analog Inputs header A [0:3]
IOL1 Arduino IOL header UART, INT [0:1], SPI2
IOH1 Arduino IOH header I2C, SPI1
P2 External JTAG debug connection header
P3 Current measurement header
P5 External power supply header
P6 Input and output of level shifter
Table 10. Switch Descriptions
Designator Description
SW1 Pushbutton switch to reset RSL10
SW2 Pushbutton switch for DIO5
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