STM32WB35CCU6ATR datasheet(14/193 Pages) STMICROELECTRONICS

14 / 193 page

Description

STM32WB55xx STM32WB35xx

14/193

DS11929 Rev 10

The STM32WB55xx and STM32WB35xx integrate a high efficiency SMPS step-down

converter with automatic bypass mode capability when the VDD falls below VBORx (x=1, 2, 3,

4) voltage level (default is 2.0 V). It includes independent power supplies for analog input for

ADC and comparators, as well as a 3.3 V dedicated supply input for USB.

A VBAT dedicated supply allows the devices to back up the LSE 32.768 kHz oscillator, the

RTC and the backup registers, thus enabling the STM32WB55xx and STM32WB35xx to

supply these functions even if the main VDD is not present through a CR2032-like battery, a

Supercap or a small rechargeable battery.

The STM32WB55xx offer four packages, from 48 to 129 pins. The STM32WB35xx offer one

package, 48 pins.

Table 2. STM32WB55xx and STM32WB35xx devices features and peripheral counts

Feature

STM32WB55Cx

STM32WB55Rx

STM32WB55Vx

STM32WB35Cx

Memory

density

(bytes)

Flash

256 K 512 K

1 M

256 K 512 K

1 M

256 K 512 K

1 M

640 K 256 K

512 K

SRAM

128 K 256 K 256 K 128 K 256 K 256 K 128 K 256 K

256 K

96 K

SRAM1

64 K

192 K

64 K

192 K

64 K

192 K

32 KB

SRAM2

64 K

BLE

V5.0 (2 Mbps)

802.15.4

Yes

Timers

Advanced

1 (16 bits)

General

purpose

2 (16 bits) + 1 (32 bits)

Low power

2 (16 bits)

SysTick

SPI

I2C

USART(1)

LPUART

SAI

2 channels

USB FS

Yes

QSPI

RTC

Tamper pin

Wakeup pin

LCD, COMxSEG

Yes, 4x13

Yes, 4x28

Yes, 8x40 or 4x44

GPIOs

Capacitive sensing

12-bit ADC



Number of channels

13 channels

(incl. 3 internal)

19 channels

(incl. 3 internal)

13 channels

(incl. 3 internal)

Internal Vref

Yes

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