The pin assignment figure and tables describe the pinouts for the device. There are also recommendations for how the GPIO pins should be configured, in addition to any usage restrictions.

Figure 1. QFN16 pin assignments, top view
QFN16 pin assignments, top view
Table 1. Pin assignments
Pin number Pin name Type Description
1 VSS Power Ground
2 ANT1 RF I/O First antenna interface
3 ANT2 RF I/O Second antenna interface
4 MODE Digital IN TX power mode control
5 VDD Power Supply voltage
6 VDD Power Supply voltage
7 RX_EN Digital IN RX mode enable
8 ANT_SEL Digital IN Antenna select
9 TX_EN Digital IN TX mode enable
10 TRX RF IO Transceiver interface
11 PDN Digital IN Power-down, active low
12 SCK Digital IN

SPI clock

Connect to VSS if SPI interface is not used

13 MOSI Digital IN

SPI data in

Connect to VSS if SPI interface is not used

14 MISO Digital OUT

SPI data out

Leave unconnected if SPI interfaces is not used

15 CSN Digital IN

SPI chip select, active low

Connect to VDD if SPI interface is not used

16 VSS Power Ground
DAP VSS Power Ground