STM32L475RC datasheet(23/193 Pages) STMICROELECTRONICS

23 / 193 page

Standby

LPR

Powered

Off

SRAM2

LSE

LSI

BOR, RTC, IWDG

***

All other peripherals are

powered off.

***

I/O configuration can be

floating, pull-up or pull-down

Reset pin

5 I/Os (WKUPx)(10)

BOR, RTC, IWDG

0.35 µA w/o RTC

0.65 µA w/ RTC

14 µs

OFF

Powered

Off

0.12 µA w/o RTC

0.42 µA w/ RTC

Shutdown

OFF

Powered

Off

Powered

Off

LSE

RTC

***

All other peripherals are

powered off.

***

I/O configuration can be

floating, pull-up or pull-down(11)

Reset pin

5 I/Os (WKUPx)(10)

RTC

0.03 µA w/o RTC

0.33 µA w/ RTC

256 µs

1. LPR means Main regulator is OFF and Low-power regulator is ON.

2. All peripherals can be active or clock gated to save power consumption.

3. Typical current at VDD = 1.8 V, 25°C. Consumptions values provided running from SRAM, Flash memory Off, 80 MHz in Range 1, 26 MHz in Range 2, 2 MHz in

LPRun/LPSleep.

4. The Flash memory can be put in power-down and its clock can be gated off when executing from SRAM.

5. The SRAM1 and SRAM2 clocks can be gated on or off independently.

6. U(S)ART and LPUART reception is functional in Stop mode, and generates a wakeup interrupt on Start, address match or received frame event.

7. I2C address detection is functional in Stop mode, and generates a wakeup interrupt in case of address match.

8. OTG_FS wakeup by resume from suspend and attach detection protocol event.

9. SWPMI1 wakeup by resume from suspend.

10. The I/Os with wakeup from Standby/Shutdown capability are: PA0, PC13, PE6, PA2, PC5.

11. I/Os can be configured with internal pull-up, pull-down or floating in Shutdown mode but the configuration is lost when exiting the Shutdown mode.

Table 4. STM32L475 modes overview (continued)

Mode

Regulator

(1)

CPU

Flash

SRAM

Clocks

DMA & Peripherals(2)

Wakeup source

Consumption(3)

Wakeup time

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