Connect an STM32F103
STM32F103C8T6
LQFP48 · 7 × 7 mm Current modelSTM32F103RBT6 LQFP64 · 10 × 10 mm
Step 1 of 3
Connect every VDD and VSS
Connect all VDD pins to the supply and all VSS pins to ground. This circuit uses 3.3 V. The general digital supply range is 2.0–3.6 V.
Place one 100 nF ceramic capacitor close to each VDD/VSS pair. Connect the 4.7 µF bulk capacitor at VDD_3 #48.
Check the connection
Measure the supply between VDD and VSS before connecting signal sources.
Highlighted pins · LQFP48
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 25 26 27 28 29 30 31 32 33 34 37 38 39 40 41 42 43 44 45 46
Pins for this step
| Signal | Pin number |
|---|---|
| VDD | 24, 36, 48 |
| VSS | 23, 35, 47 |
| VDD_3 | 48 |
Reference documents
- STM32F103 datasheet· Power supply scheme and pin assignments · PDF
- STM32F10xxx reference manual· Power and VBAT · PDF
- AO3400A datasheet· MOSFET pinout and electrical limits · PDF
