Pinout

EE02 exposes several of the nRF52 pins. Available pins are listed in the table below. The location of Pin 1, 6 and 31 are shown in the graphics below.

EE02 pinout

EE02 pin nRF52 Description
1 VDD Power Supply (1.7V - 3,6)
2 Gnd Ground
3 NC Not connected
4 Gnd Ground
5 VDD Power Supply (1.7V - 3,6)
6 Gnd Ground
7 VDD Power Supply (1.7V - 3,6)
8 NC Not connected
9 RESET nRF52 Active low
10 RESET SX1276 Active low
11 P0.17 General purpose I/O
12 P0.12 General purpose I/O
13 NFC2 NFC antenna connection
14 NFC1 NFC antenna connection
15 P0.08 General purpose I/O
16 P0.07 General purpose I/O
17 P0.06 General purpose I/O
18 P0.05 General purpose I/O. SAADC/COMP/LPCOMP input
19 P0.04 General purpose I/O. SAADC/COMP/LPCOMP input
20 P0.03 General purpose I/O. SAADC/COMP/LPCOMP input
21 P0.02 General purpose I/O. SAADC/COMP/LPCOMP input
22 P0.11 General purpose I/O
23 P0.31 General purpose I/O. SAADC/COMP/LPCOMP input
24 P0.30 General purpose I/O. AADC/COMP/LPCOMP input
25 P0.29 General purpose I/O. AADC/COMP/LPCOMP input
26 P0.28 General purpose I/O. AADC/COMP/LPCOMP input
27 P0.27 SX1276_ANT_HF_CTRL
28 NC Not connected
29 VDD Power Supply (1.7V - 3,6)
30 Gnd Ground
31 VDD Power Supply (1.7V - 3,6)
32 Gnd Ground
33 P0.26 General purpose I/O
34 SCK SPI
35 MISO SPI
36 MOSI SPI
37 SWDCLK Serial Wire Debug IO for debug and programming
38 SWDIO Serial Wire Debug IO for debug and programming
39 Gnd Ground
40 VDD Power Supply (1.7V - 3,6)
info Note

The nRF52832 reference can be found at Having issues? Check out the nRF52832 reference at Nordic Semiconductor

EE-02 v2.1 inter-connects

The following nRF52 pins are used internally to communicate with the SX1276 radio chip. They are not exposed externally.

nRF52 SX1276
P0.18 NRESET
P0.20 DIO05
P0.19 DIO04
P0.16 DIO03
P0.15 DIO02
P0.14 DIO01
P0.13 DIO00
P0.22 SX1276_CS
P0.21 SX1276_RXTX
P0.27 SX1276_ANT_HF_CTRL
warning Pins are for internal use only

These pins should not be referenced by your application!