Power supplies

AN2586

10/28

Doc ID 13675 Rev 7

The STM32F1xx does not require an external reset circuit to power-up correctly. Only a pull-

down capacitor is recommended to improve EMS performance by protecting the device

against parasitic resets. See Figure 5.

Charging and discharging a pull-down capacitor through an internal resistor increases the

device power consumption. The capacitor recommended value (100 nF) can be reduced to

10 nF to limit this power consumption;

Figure 5.

Reset circuit