Data Sheet

BMD-345 - Data sheet
UBX-19039908 - R07 Pin definition Page 9 of 36
2 Pin definition
2.1 Pin assignment
Figure 2: BMD-345 Pin assignment (Top view)
No.
Name
I/O
Description
nRF52 pin
Remarks
1
GND
Power
Electrical Ground
2
GND
Power
Electrical Ground
3
GND
Power
Electrical Ground
4
GND
Power
Electrical Ground
5
GND
Power
Electrical Ground
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
17
VCC
Power I/O
Connect to 2.0V to 3.6V DC
supply
VDD and
VDDH
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
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