S/AI
Hardware Reference
www.stollmann.de
Page 10 of 52
2 Block Diagram
nRF51822
VSUP
S/AI
Balun+
Filter
R
ES
ET
I2C
U
A
RT
SP
I
1
2
up t
o
7
3
GND
3.0V
16MHz
opt
. 32
kH
z
Serial Wire
(DEBUG)
onboard
antenna
2
GP
IO
up t
o
19
A
nal
og I
n
up t
o
6
Figure 1: S/AI Block Diagram
