Data Sheet

BMD-341 - Data sheet
UBX-19033643 - R03 Pin definition Page 9 of 36
2 Pin definition
2.1 Pin assignment
Figure 2: BMD-341 Pin assignment (Top view)
No.
Name
I/O
Description
nRF52 pin
Remarks
1
GND
Power
Electrical Ground
GND
2
GND
Power
Electrical Ground
GND
3
GND
Power
Electrical Ground
GND
4
GND
Power
Electrical Ground
GND
5
GND
Power
Electrical Ground
GND
6
P0.25
I/O
GPIO
P0.25
7
P0.26
I/O
GPIO
P0.26
8
P0.27
I/O
GPIO
P0.27
9
P0.28
I/O
GPIO/AIN4
P0.28
Standard drive, low frequency I/O only (<10 kHz)
10
P0.29
I/O
GPIO/AIN5
P0.29
Standard drive, low frequency I/O only (<10 kHz)
11
P0.30
I/O
GPIO/AIN6
P0.30
Standard drive, low frequency I/O only (<10 kHz)
12
P0.31
I/O
GPIO/AIN7
P0.31
Standard drive, low frequency I/O only (<10 kHz)
13
P0.00
I/O
GPIO/XTAL1 (32.768 kHz)
P0.00
14
P0.01
I/O
GPIO/XTAL2 (32.768 KHz)
P0.01
15
P0.02
I/O
GPIO/AIN0
P0.02
Standard drive, low frequency I/O only (<10 kHz)
16
GND
Power
Electrical Ground
GND
17
VCC
Power
In/Out
LV Mode: 1.7 V to 3.6 V in
HV Mode: 1.8 V to 3.3 V
supply out
1
VCC
An internal 4.7 µF bulk capacitor is included on
the module. However, it is good design practice to
add additional bulk capacitance as required for
your application, i.e. those with heavy GPIO usage
and/or current draw.
18
GND
Power
Electrical Ground
GND
19
P0.03
I/O
GPIO/AIN1
P0.03
Standard drive, low frequency I/O only (<10 kHz)
20
P0.04
I/O
GPIO/AIN2
P0.04
21
P0.05
I/O
GPIO/AIN3
P0.05
22
P0.06
I/O
GPIO
P0.06
23
P0.07
I/O
GPIO/TRACECLK
P0.07