
DocID16139 Rev 5
AN3029
Reference design
41
7 Reference
design
7.1 Component
references
Table 2. Component list
ID
Component name
Reference
Quantity
Comments
1
Microcontroller STM8L,
STM8AL
1
Refer to the ‘pinouts and pin description’
and ‘package characteristics’ sections of
the
STM8L
and STM8AL datasheets, to
choose the right package
2
Battery
1.65 V to 3.6 V
(1)
1. 1.8 V to 3.6 V for STM8L05xxx.
1
Min 1.8 V when BOR is enabled
3
Capacitor 1
µF
n
Decoupling
capacitor
4
Capacitor
100 nF
n
Ceramic capacitor (decoupling capacitor)
Components below are optional
5
Capacitor
10 µF
1
Ceramic capacitor (decoupling capacitor)
6
Crystal
1 to 16 MHz
1
-
7
Capacitor
20 to 40 pF
2
Used for crystal
Crystal
32 kHz
1
-
8
Capacitor
5 to 20 pF
2
Used for crystal
Ferrite bead
Depends on noise to be filtered
9
SWIM connector
4 pins
1
-