Spark Logic

Connect an STM32F103

STM32F103C8T6

LQFP48 · 7 × 7 mm Current model
STM32F103RBT6 LQFP64 · 10 × 10 mm
Open LQFP48 pinout →

Step 1 of 3

Connect every VDD and VSS

Connect every VDD and VSS · STM32F103C8T63.3 VVDD 24,36,48VSS 23,35,47100 nF × 34.7 µF

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 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Pins for this step

SignalPin number
VDD24, 36, 48
VSS23, 35, 47
VDD_348

Reference documents