Figure 3. Power Supply Supervisors - ST STM32L152-EVAL Application Note

Power supplies
Figure 3.
V
PVD output
BOR reset
BOR/PDR reset
POR/PDR reset
1. The PVD is available on all STM32L devices and it is enabled or disabled by software.
2. The BOR is available only on devices operating from 1.8 to 3.6 V, and unless disabled by option byte it
masks the POR/PDR threshold.
3. When the BOR is disabled by option byte, the reset is asserted when V
4. For devices operating from 1.65 to 3.6 V, there is no BOR and the reset is released when V
POR level and asserted when V
10/30
Power supply supervisors
V /V
D D D DA
V
100 mV
PVD
hysteresis
100 mV
V
BOR
hysteresis
/ V
POR PDR
(NRST)
(NRST)
(NRST)
PVD
BOR always active
BOR disabled by option byte
POR/PDR (BOR not available)
DD
Doc ID 17496 Rev 5
IT enabled
(Note 1)
(Note 2)
(Note 3)
(Note 4)
goes below PDR level.
goes below PDR level.
DD
goes above
DD
AN3216
ai17211b