Data Sheet

BLM01 - Data she
et
Page 7 of 15
H
ynall Intell
igent Control Co., Ltd
2 Pin definition
2.1 Pin assignment
Figure 2: BLM01
Pin assignment (top view)
No. Name I/O Description nRF52 pin Remarks
1 GND Power Electrical Gr
ound
2 G
ND
P
o
w
e
r E
l
e
ct
r
i
ca
l
G
r
ound
3 GND Power Electrical Gr
ound
4 GND Power Electrical Gr
ound
5 GND Power Electrical Ground
6 P0.25 I/O GPIO P0.25 Use as low dri
ve, low frequency GPIO only
7 P0.26 I/O GPIO P0.26 Use as low dri
ve, low frequency GPIO only
8 P0.27 I/O GPIO P0.27 Use as low dri
ve, low frequency GPIO only
9 P0.28 I/O GPIO/AIN4 P0.28
Pin is analog capable, us
e as low drive, low
frequency GPIO only
10 P0.29 I/O GPIO/AIN5 P0.29
Pi
n is an
al
o
g c
a
pa
bl
e, u
s
e as low drive, low
frequency GPIO only
11 P0.30 I/O GPIO/AIN6 P0.30
Pin is analog capable, us
e as low drive, low
frequency GPIO only
12 P0.31 I/O GPIO/AIN7 P0.31
Pin is analog capable, us
e as low drive, low
frequency GPIO only
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 Pin is analog
capable
16 GND Power Electrical Gr
ound
17 V
CC
P
o
w
e
r +
1.
7V
t
o
+
3.
6V
An internal 4.7 µ F bulk capacitor is incl
uded
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 Gr
ound
19 P0.03 I/O GPIO/AIN1 P0.03 Pin is analog
capable
20 P
0.
04 I
/O
G
P
I
O
/
A
I
N
2 P
0.
04 P
i
n
i
s
an
al
o
g
capable
21 P0.05 I/O GPIO/AIN3 P0.05 Pin is analog
capable