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RM0453
Table 45. Functionalities depending on system operating mode
Peripheral
SUBGHZSPI
SPI2S2
ADC
DAC
VREFBUF
COMPx (x = 1, 2)
Temperature sensor
Timers (TIMx) x = 1, 2, 16, 17)
LPTIM1
LPTIMx (x = 2, 3)
Independent watchdog
(IWDG)
Window watchdog (WWDG)
SysTick timer
True random number
generator (RNG)
AES hardware accelerator
PKA hardware accelerator
CRC calculation unit
IPCC
HSEM
GTZC TZSC
GTZC TZIC
EXTI
GPIOs
1. Legend: Y = Yes (enable). O = Optional (disable by default and can be enabled by software). R = data retained.
- = Not available. Gray cells indicate wake-up capability.
2. The SRAM clock can be gated on or off.
3. Flash memory can be placed in power-down mode.
Stop 0
-
O
O
O
O
R
O
O
O
O
R
O
O
O
O
R
O
O
O
O
R
O
O
O
O
O
O
O
O
O
O
O
O
O
O
R
O
O
O
O
R
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
R
O
O
O
O
R
(1
O
O
R
R
R
(10)
0)
O
O
O
O
R
O
O
O
O
R
O
O
O
O
R
O
R
O
R
R
O
R
O
R
R
O
R
O
R
R
O
R
O
R
R
O
O
O
O
R
O
O
O
O
O
RM0453 Rev 5
Stop 1
Stop 2
-
-
-
R
-
-
-
-
R
-
-
-
-
R
-
-
-
-
R
-
-
-
-
O
-
R
-
O
O
O
O
O
-
R
-
-
-
-
R
-
-
-
O
O
O
O
O
O
O
O
-
-
O
O
O
O
O
-
R
-
R
-
-
R
-
R
-
-
R
-
-
-
-
R
-
-
-
-
R
-
-
-
-
R
-
R
-
-
R
-
R
-
-
R
-
-
-
-
R
-
R
-
-
R
-
R
-
O
R
O
R
O
O
O
O
O
O
Power control (PWR)
(1)
(continued)
Standby
Shutdo
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
O
O
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3
3
pin
pin
(11)
(13)
R
(1
s
s
(12)
2)
247/1450
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
285
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