Datasheet

DocID028479 Rev 1 25/121
STM32F722xx STM32F723xx Functional overview
43
Figure 9. Power supply supervisor interconnection with internal reset OFF
The V
DD
specified threshold, below which the device must be maintained under reset, is
1.7
V (see Figure 10).
A comprehensive set of power-saving mode allows to design low-power applications.
When the internal reset is OFF, the following integrated features are no more supported:
• The integrated power-on reset (POR) / power-down reset (PDR) circuitry is disabled
• The brownout reset (BOR) circuitry must be disabled
• The embedded programmable voltage detector (PVD) is disabled
• V
BAT
functionality is no more available and V
BAT
pin should be connected to V
DD
.
All packages, except for the LQFP100, allow to disable the internal reset through the
PDR_ON signal when connected to V
SS
.
Figure 10. PDR_ON control with internal reset OFF
069
1567
9
''
3'5B21
([WHUQDO9
''
SRZHUVXSSO\VXSHUYLVRU
([WUHVHWFRQWUROOHUDFWLYHZKHQ
9
''
9
9
''
$SSOLFDWLRQUHVHW
VLJQDO
9
66
069
9
''
WLPH
3'5 9
WLPH
1567
3'5B21
3'5B21
5HVHWE\RWKHUVRXUFHWKDQ
SRZHUVXSSO\VXSHUYLVRU
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.