3.2.1 P1, P2, P3: Module access pins
P1
nRF52840
Function
1
P0.02
/DATA_IND
2
P0.18
RESET
3
SWDIO
SWDIO
4
SWCLK
SWCLK
5
GND
Table 5: Pin header P1
P2
nRF52840
Function
1
P0.19
LED1
2
P0.22
LED2
3
P0.09
B1, RSVD
4
P0.10
B2, RSVD
5
P0.23
B3, RSVD
6
P1.00
B4, RSVD
7
P0.21
B5, RSVD
8
P0.07
B6, RSVD
9
P0.03
17, RSVD
Table 6: Pin header P2
3.2.2 P3: TTL-232R-3V3 FTDI cable connector
P3
nRF52840
Function
1
GND
2
P0.11
15, RSVD
3
5V
4
P1.09
URXD
5
P1.08
UTXD
6
P0.12
16, RSVD
Table 7: Pin header P3
Pin header P3 is used to connect the TTL-232R-3V3 FTDI cable. P3 can also
be used for direct host connection.
Thetis-I Mini Evaluation Board user manual version 1.0
© February 2021
www.we-online.com/wireless-connectivity
13
