DocID16139 Rev 5 19/42
AN3029 Reference design
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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 -