ST STM32F207 series User Manual

Power control (PWR) RM0033
64/1381 RM0033 Rev 9
4 Power control (PWR)
4.1 Power supplies
The device requires a 1.8-to-3.6 V operating voltage supply (V
DD
). An embedded linear
voltage regulator is used to supply the internal 1.2 V digital power.
The real-time clock (RTC), the RTC backup registers, and the backup SRAM (BKP SRAM)
can be powered from the V
BAT
voltage when the main V
DD
supply is powered off.
Note: Depending on the operating power supply range, some peripheral may be used with limited
functionality and performance. For more details refer to section "General operating
conditions" in STM32F2xx datasheets.
Figure 3. Power supply overview
1. V
DDA
and V
SSA
must be connected to V
DD
and V
SS
, respectively.
2. IRROFF is only available on WLCSP package.
ai17527e
V
DD
1/2/...14/15
V
BAT
GP I/Os
OUT
IN
Kernel logic
(CPU,
digital
& RAM)
Backup circuitry
(OSC32K,RTC,
Backup registers,
backup RAM)
Wakeup logic
15 × 100 nF
+ 1 × 4.7 μF
1.8-3.6 V
V
SS
1/2/...14/15
V
DDA
V
REF+
V
REF-
V
SSA
ADC
Level shifter
IO
Logic
V
DD
100 nF
+ 1 μF
V
REF
100 nF
+ 1 μF
V
DD
Flash memory
V
CAP_1
V
CAP_2
2 × 2.2 μF
REGOFF
IRROFF
Power switch
Analog
RCs, PLL,
...
Voltage
regulator

ST STM32F207 series Specifications

General

Brand	ST
Model	STM32F207 series
Category	Microcontrollers
Language	English