STM32WB09XE datasheet(69/73 Pages) STMICROELECTRONICS

69 / 73 page

3.17.2

Independent watchdog (IWDG)............................................. 20

3.17.3

SysTick timer .......................................................... 20

3.18

Real-time clock (RTC) ......................................................... 20

3.19

Inter-integrated circuit interface (I2C) ............................................. 20

3.20

Universal synchronous/asynchronous receiver transmitter (USART) ................... 21

3.21

Low-power universal asynchronous receiver transmitter (LPUART) ................... 21

3.22

Embedded UART bootloader.................................................... 22

3.23

Inter-IC sound (I2S) ........................................................... 23

3.24

Serial peripheral interface (SPI) ................................................. 23

3.25

Serial wire debug port.......................................................... 23

3.26

TX and RX event alert ......................................................... 23

3.27

Direction finding............................................................... 24

Pinout, pin description and alternate functions....................................25

4.1

Pinout/ballout schematics ...................................................... 25

4.2

Pin description ................................................................ 27

4.3

Alternate functions ............................................................ 30

Application circuits ...............................................................31

Electrical characteristics..........................................................34

6.1

Parameter conditions .......................................................... 34

6.1.1

Minimum and maximum values............................................. 34

6.1.2

Typical values .......................................................... 34

6.1.3

Typical curves .......................................................... 34

6.1.4

Loading capacitor ....................................................... 34

6.1.5

Pin input voltage ........................................................ 35

6.2

Absolute maximum ratings...................................................... 36

6.3

Operating conditions........................................................... 37

6.3.1

General operating conditions .............................................. 37

6.3.2

Summary of main performance ............................................. 37

6.3.3

RF general characteristics................................................. 41

6.3.4

RF transmitter characteristics .............................................. 42

6.3.5

RF receiver characteristics ................................................ 44

6.3.6

Embedded reset and power control block characteristics ......................... 47

6.3.7

Supply current characteristics .............................................. 47

6.3.8

Wakeup time from low-power modes ........................................ 48

6.3.9

High speed crystal requirements ............................................ 48

6.3.10

Low speed crystal requirements ............................................ 49

6.3.11

High speed ring oscillator characteristics ..................................... 49

STM32WB09xE

Contents

DS14210 - Rev 6

page 69/73

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