STM32WB55xx
2/172 DS11929 Rev 4
operations, enabling authentic Bluetooth
®
Low Energy and 802.15.4 SW stack
– Up to 256 KB SRAM, including 64 KB with
hardware parity check
– 20x32-bit backup register
– Boot loader supporting, USART, SPI, I2C
and USB interfaces
– OTA (Over the air) Bluetooth
®
Low Energy
and 802.15.4 update
– Quad SPI memory interface with XIP
• Rich analog peripherals (down to 1.62 V)
– 12-bit ADC 4.26Msps, up to 16-bit with
hardware oversampling, 200 µA/Msps
– 2x ultra-low-power comparator
– Accurate 2.5 V or 2.048 V reference
voltage buffered output
• System peripherals
– Inter processor communication controller
(IPCC) for communication with Bluetooth
®
Low Energy and 802.15.4
– HW semaphores for resources sharing
between CPUs
– 2x DMA controllers (7x channels each)
supporting ADC, SPI, I2C, USART, QSPI,
SAI, AES, Timers
– 1x USART (ISO 7816, IrDA, SPI Master,
Modbus and Smartcard mode)
– 1x LPUART (low power)
– 2x SPI 32 Mbit/s
– 2x I2C (SMBus/PMBus)
– 1x SAI (dual channel high quality audio)
– 1x USB 2.0 FS device, crystal-less, BCD
and LPM
– Touch sensing controller, up to 18 sensors
– LCD 8x40 with step-up converter
– 1x 16-bit, four channels advanced timer
– 2x 16-bits, two channels timer
– 1x 32-bits, four channels timer
– 2x 16-bits ultra-low-power timer
– 1x independent Systick
– 1x independent watchdog
– 1x window watchdog
• Security and ID
– Secure firmware installation (SFI) for
Bluetooth
®
Low Energy and 802.15.4 SW
stack
– 3x hardware encryption AES maximum
256-bit for the application, the Bluetooth
®
Low Energy and IEEE802.15.4
– Customer key storage / key manager
services
– HW public key authority (PKA)
– Cryptographic algorithms: RSA,
Diffie-Helman, ECC over GF(p)
– True random number generator (RNG)
– Sector protection against R/W operation
(PCROP)
– CRC calculation unit
– 96-bit unique ID
– 64-bit unique ID. Possibility to derive
802.15.5 64-bit and Bluetooth
®
Low Energy
48-bit EUI
• Up to 72 fast I/Os, 70 of them 5 V-tolerant
• Development support
– Serial wire debug (SWD), JTAG for the
Application processor
– Application cross trigger with input and
output
– Embedded Trace Macrocell™ for
application
• All packages are ECOPACK
®
2 compliant
Table 1. Device summary
Reference Part numbers
STM32WB55xx
STM32WB55CC, STM32WB55RC, STM32WB55VC
STM32WB55CE, STM32WB55RE, STM32WB55VE
STM32WB55CG, STM32WB55RG, STM32WB55VG