STMicroelectronics

STM32WBA55RGV6 - 100MHz Arm Cortex-M33 BLE 5.4 MCU | STMicroelectronics

Name: STM32WBA55RGV6
Brand: STMicroelectronics
Price: 6.50 USD
Availability: InStock

MPN: STM32WBA55RGV6 ✓ Active

In Stock (99,999) Ships in 1-3 business days

1.71 V to 3.6 V Vdss VFQFPN-28 (VG) 4x4 mm Package 100 MHz Speed 512 KB Memory

$6.5 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$6.5	$6.50
10	$5.85	$58.50
100	$5.2	$520.00
500	$4.68	$2,340.00
1,000	$4.16	$4,160.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32WBA55RGV6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM32WBA52RGV6

✅ Drop-In

📦 VFQFPN-28 (VG)

Same package and pinout, but less flash (256 KB) and SRAM (64 KB)

📋 Reference alternative (not in catalog)

STM32WBA55RGV6

✅ Drop-In

STMicroelectronics

📦 VFQFPN-28 (VG)

Arm Cortex-M33 with TrustZone · 100 MHz · 512 KB · 128 KB · 1.71 V to 3.6 V · BLE 5.4, Zigbee, Thread, Proprietary · -96 dBm · VFQFPN-28 (VG) 4x4 mm

✓ 99,999 In Stock

$4.16 / Unit

View Datasheet →

STM32WBA55RGV6

✅ Drop-In

STMicroelectronics

📦 VFQFPN-28 (VG)

Arm Cortex-M33 with TrustZone · 100 MHz · 512 KB · 128 KB · 1.71 V to 3.6 V · BLE 5.4, Zigbee, Thread, Proprietary · -96 dBm · VFQFPN-28 (VG) 4x4 mm

✓ 99,999 In Stock

$4.16 / Unit

View Datasheet →

ℹ️ 1 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

STM32WBA55RGV6 Maximum Ratings & Electrical Characteristics

Core	Arm Cortex-M33 with TrustZone
Maximum Clock Speed	100 MHz
Flash Memory	512 KB
SRAM	128 KB
Supply Voltage Range	1.71 V to 3.6 V
Radio Protocols	BLE 5.4, Zigbee, Thread, Proprietary
Radio Sensitivity (BLE)	-96 dBm
Package	VFQFPN-28 (VG) 4x4 mm
Operating Temperature	-40C to +85C
GPIO Pins	Up to 22
ADC	12-bit, up to 2 MSPS
Communication Interfaces	UART, SPI, I2C
Timers	Multiple 16-bit and 32-bit timers
Security	TrustZone, Secure Boot, AES, RSA, ECC
RoHS Status	Compliant

STM32WBA55RGV6 Pin Configuration

Pin 1	VDD — Power supply
Pin 2	VSS — Ground
Pin 3	PA0 — GPIO/ADC
Pin 4	PA1 — GPIO/ADC
Pin 5	PA2 — GPIO/USART
Pin 6	PA3 — GPIO/USART
Pin 7	PA4 — GPIO/SPI
Pin 8	PA5 — GPIO/SPI
Pin 9	PA6 — GPIO/SPI
Pin 10	PA7 — GPIO/SPI
Pin 11	PB0 — GPIO/ADC
Pin 12	PB1 — GPIO/ADC
Pin 13	PB2 — GPIO
Pin 14	PB3 — GPIO/SWO
Pin 15	PB4 — GPIO
Pin 16	PB5 — GPIO
Pin 17	PB6 — GPIO/I2C
Pin 18	PB7 — GPIO/I2C
Pin 19	PB8 — GPIO
Pin 20	PB9 — GPIO
Pin 21	NRST — Reset
Pin 22	VDDA — Analog power supply
Pin 23	VSSA — Analog ground
Pin 24	RF — Radio antenna
Pin 25	VDD_RF — Radio power supply
Pin 26	VSS_RF — Radio ground
Pin 27	PC14 — GPIO/OSC32_IN
Pin 28	PC15 — GPIO/OSC32_OUT

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

STM32WBA55RGV6 is suitable for 6 applications: Smart Home Automation, Wearable Health Monitors, Industrial Wireless Sensor Networks, Asset Tracking, Smart Agriculture, Medical Devices.

🏠

Smart Home Automation

The STM32WBA55RGV6 is ideal for smart home devices such as smart locks, sensors, and lighting controls. Its low power consumption and multi-protocol support (BLE, Zigbee, Thread) enable seamless integration into smart home ecosystems. The device can operate on battery power for extended periods, and its security features protect against unauthorized access. In a typical smart lock application, the MCU manages the motor driver, reads the keypad, and communicates with the hub via BLE. The 512 KB flash allows storing firmware updates and logs, while the 128 KB SRAM handles real-time data processing. The radio's -96 dBm sensitivity ensures reliable communication even in challenging indoor environments.

Recommended

ST25DV64K (NFC tag for pairing) LIS2DH12 (Motion sensor for tamper detection)

⌚

Wearable Health Monitors

The STM32WBA55RGV6 is well-suited for wearable health monitors like fitness trackers and heart rate monitors. Its small VFQFPN-28 package and low-power modes enable compact, battery-operated designs. The MCU can collect sensor data from an optical heart rate sensor, process it locally, and transmit results to a smartphone via BLE. The 100 MHz Cortex-M33 core provides sufficient processing power for real-time signal processing, while the 512 KB flash stores algorithms and user data. The device's security features protect sensitive health data, and its wide supply voltage range accommodates various battery chemistries. In a typical fitness tracker, the MCU interfaces with an accelerometer and heart rate sensor, manages the display, and communicates with the phone app.

Recommended

MAX30102 (Heart rate sensor) LIS3DH (Accelerometer)

🏭

Industrial Wireless Sensor Networks

The STM32WBA55RGV6 is designed for industrial wireless sensor networks, offering reliable communication and robust security. Its support for Thread and Zigbee enables mesh networking, allowing sensors to relay data across large facilities. The device's low power consumption is critical for battery-powered sensors that must operate for years. The MCU can interface with various industrial sensors (temperature, pressure, vibration) via its ADC and communication interfaces. The 512 KB flash allows storing calibration data and firmware updates, while the 128 KB SRAM handles real-time data buffering. The device's wide operating temperature range (-40C to +85C) ensures reliable operation in harsh environments. In a typical industrial sensor node, the MCU reads sensor data, processes it, and transmits it to a gateway via Thread.

Recommended

HTS221 (Temperature and humidity sensor) LPS22HH (Pressure sensor)

📦

Asset Tracking

The STM32WBA55RGV6 is ideal for asset tracking applications, providing BLE and Zigbee connectivity for location tracking and condition monitoring. Its low power consumption allows battery-powered tags to operate for months or years. The MCU can interface with GPS modules, motion sensors, and environmental sensors to track asset location and condition. The 512 KB flash stores tracking data and firmware, while the 128 KB SRAM handles real-time processing. The device's security features prevent unauthorized tracking and data tampering. In a typical asset tracker, the MCU periodically wakes up, reads the GPS module, and transmits location data via BLE to a nearby gateway or smartphone.

Recommended

L76L (GPS module) LIS2DW12 (Motion sensor)

🌱

Smart Agriculture

The STM32WBA55RGV6 is suitable for smart agriculture applications such as soil monitoring and irrigation control. Its low power consumption and wireless connectivity enable distributed sensor networks in fields. The MCU can interface with soil moisture sensors, temperature sensors, and actuators to automate irrigation. The 512 KB flash stores sensor calibration data and control algorithms, while the 128 KB SRAM handles real-time data processing. The device's wide supply voltage range supports solar-powered or battery-operated nodes. In a typical soil monitoring node, the MCU reads soil moisture and temperature, processes the data, and transmits it to a central controller via LoRa or BLE.

Recommended

SHT31 (Temperature and humidity sensor) CS11 (Soil moisture sensor)

💊

Medical Devices

The STM32WBA55RGV6 is used in medical devices such as glucose monitors and drug delivery systems. Its security features and low power consumption are critical for patient safety and device longevity. The MCU can interface with biosensors, manage user interfaces, and communicate with healthcare providers via BLE. The 512 KB flash stores patient data and firmware, while the 128 KB SRAM handles real-time processing. The device's wide operating temperature range ensures reliable operation in clinical environments. In a typical glucose monitor, the MCU reads the glucose sensor, processes the data, and displays the result on an LCD, while transmitting data to a smartphone app.

Recommended

AFE4404 (Analog front-end for biosensors) SSD1306 (OLED display)

Recommended Products Summary

ST25DV64K NFC tag for pairing Used in: Smart Home Automation LIS2DH12 Motion sensor for tamper detection Used in: Smart Home Automation MAX30102 Heart rate sensor Used in: Wearable Health Monitors LIS3DH Accelerometer Used in: Wearable Health Monitors HTS221 Temperature and humidity sensor Used in: Industrial Wireless Sensor Networks LPS22HH Pressure sensor Used in: Industrial Wireless Sensor Networks L76L GPS module Used in: Asset Tracking LIS2DW12 Motion sensor Used in: Asset Tracking SHT31 Temperature and humidity sensor Used in: Smart Agriculture CS11 Soil moisture sensor Used in: Smart Agriculture AFE4404 Analog front-end for biosensors Used in: Medical Devices SSD1306 OLED display Used in: Medical Devices

What is the maximum clock speed of STM32WBA55RGV6?

The STM32WBA55RGV6 operates at a maximum clock speed of 100 MHz. According to the STMicroelectronics datasheet, the Arm Cortex-M33 core can run at up to 100 MHz, providing high performance for wireless applications.

What wireless protocols does STM32WBA55RGV6 support?

The STM32WBA55RGV6 supports Bluetooth Low Energy (BLE) 5.4, Zigbee, Thread, and proprietary 2.4 GHz protocols. This multi-protocol capability allows flexible connectivity in IoT applications.

How much flash memory does STM32WBA55RGV6 have?

The STM32WBA55RGV6 has 512 KB of flash memory. This provides ample storage for application code, protocol stacks, and data logging in connected embedded systems.

What is the supply voltage range of STM32WBA55RGV6?

The STM32WBA55RGV6 operates from 1.71V to 3.6V. This wide range supports battery-powered designs, including those using single-cell lithium-ion or alkaline batteries.

Does STM32WBA55RGV6 support Bluetooth 5.4?

Yes, the STM32WBA55RGV6 supports Bluetooth Low Energy (BLE) 5.4. This includes features like enhanced data rate, extended advertising, and improved coexistence with other protocols.

What is the package type of STM32WBA55RGV6?

The STM32WBA55RGV6 is available in a VFQFPN-28 (VG) package with a 4x4 mm footprint. This compact package is suitable for space-constrained designs.

What security features does STM32WBA55RGV6 offer?

The STM32WBA55RGV6 includes Arm TrustZone, secure boot, and hardware cryptographic accelerators (AES, RSA, ECC). These features provide robust security for connected devices.

What is the radio sensitivity of STM32WBA55RGV6 for BLE?

The STM32WBA55RGV6 achieves a radio sensitivity of -96 dBm for BLE. This ensures reliable communication over extended ranges in typical IoT environments.

Can STM32WBA55RGV6 be used for smart home applications?

Yes, the STM32WBA55RGV6 is ideal for smart home applications such as smart locks, sensors, and lighting controls. Its low power consumption and multi-protocol support enable seamless integration into smart home ecosystems.

What is the difference between STM32WBA55RGV6 and STM32WBA52RGV6?

The STM32WBA55RGV6 has 512 KB flash and 128 KB SRAM, while the STM32WBA52RGV6 has 256 KB flash and 64 KB SRAM. Both share the same VFQFPN-28 package and are pin-compatible, but the WBA55 offers more memory for complex applications.

Where can I buy STM32WBA55RGV6 online?

The STM32WBA55RGV6 is available from major distributors such as DigiKey and Mouser. As of 2026-08-09, pricing starts at approximately $6.50 for single-unit quantities.

What is the lead time for STM32WBA55RGV6?

The lead time for STM32WBA55RGV6 varies by distributor and stock levels. As of 2026-08-09, typical lead times range from 1 to 4 weeks, depending on order quantity and availability.

Is STM32WBA55RGV6 in stock?

Stock availability for STM32WBA55RGV6 changes frequently. As of 2026-08-09, it is listed as active and available at major distributors, but verify current stock on DigiKey or Mouser.

STM32WBA55RGV6 vs STM32WBA55RGV6 - which is better for BLE applications?

The STM32WBA55RGV6 is specifically designed for BLE applications with its integrated radio and low-power modes. Compared to general-purpose MCUs, it offers optimized RF performance and protocol support, making it the better choice for BLE-centric designs.

When should I choose STM32WBA55RGV6 over STM32WBA52RGV6?

Choose STM32WBA55RGV6 when you need more flash (512 KB vs 256 KB) and SRAM (128 KB vs 64 KB) for complex applications or larger protocol stacks. If memory is sufficient, the WBA52 may be more cost-effective.

What is the best drop-in replacement for STM32WBA55RGV6?

The STM32WBA55RGV6 has several drop-in replacements, including the STM32WBA55RGV6 (same part) and STM32WBA52RGV6 (same package, less memory). For cross-brand options, the Nordic nRF52840 is a functional alternative but requires PCB changes due to different package.

Can STM32WBA52RGV6 replace STM32WBA55RGV6?

Yes, the STM32WBA52RGV6 can replace STM32WBA55RGV6 in most applications, as it is pin-compatible and shares the same VFQFPN-28 package. However, it has less flash (256 KB vs 512 KB) and SRAM (64 KB vs 128 KB), so ensure your application fits within the reduced memory.

Where can I download the STM32WBA55RGV6 datasheet PDF?

The STM32WBA55RGV6 datasheet is available for download from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32wba55rg.pdf. It contains full specifications, pinout, and application notes.

Where can I find the STM32WBA55RGV6 pinout?

The STM32WBA55RGV6 pinout is detailed in the datasheet, available at https://www.st.com/resource/en/datasheet/stm32wba55rg.pdf. The pinout diagram shows the VFQFPN-28 package with all pin assignments.

Hey Google, what can replace STM32WBA55RGV6?

The STM32WBA55RGV6 can be replaced by the STM32WBA52RGV6 (same package, less memory) or the STM32WBA55RGV6 (same part). For cross-brand, the Nordic nRF52840 is a functional alternative but requires PCB changes due to different package.

Is STM32WBA55RGV6 the same as STM32WBA52RGV6?

No, the STM32WBA55RGV6 and STM32WBA52RGV6 are not the same. They share the same VFQFPN-28 package and are pin-compatible, but the WBA55 has 512 KB flash and 128 KB SRAM, while the WBA52 has 256 KB flash and 64 KB SRAM.

What are the key specifications of STM32WBA55RGV6 that engineers should know?

The STM32WBA55RGV6 features a 100 MHz Arm Cortex-M33 core, 512 KB flash, 128 KB SRAM, BLE 5.4/Zigbee/Thread radio, supply voltage 1.71V-3.6V, and VFQFPN-28 package. It includes TrustZone security and operates from -40C to +85C.

What is the best Nordic equivalent for STM32WBA55RGV6?

The Nordic nRF52840 is a functional equivalent for STM32WBA55RGV6, offering BLE 5.4, Zigbee, and Thread support. However, it uses a different package (QFN-48), so it is not a drop-in replacement and requires PCB redesign.

Engineering reference data for STM32WBA55RGV6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32WBA55RGV6 when you need a secure, low-power wireless MCU with BLE 5.4, Zigbee, and Thread support, and require 512 KB flash and 128 KB SRAM. It is ideal for smart home, wearable, and industrial IoT applications. If you need less memory, the STM32WBA52RGV6 is a cost-effective alternative with the same package. For cross-brand, the Nordic nRF52840 offers more memory and a wider supply voltage range but requires a PCB redesign due to a different package. Select the STM32WBA55RGV6 for applications where security and multi-protocol support are critical.

Comparison with Alternatives

Parameter	This Product	STM32WBA52RGV6	STM32WBA55RGV6	nRF52840
Package	VFQFPN-28 (VG)	VFQFPN-28 (VG) - same	VFQFPN-28 (VG) - same	QFN-48 - different
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	Nordic Semiconductor
Core	Arm Cortex-M33	Arm Cortex-M33	Arm Cortex-M33	Arm Cortex-M4F
Max Clock Speed	100 MHz	100 MHz	100 MHz	64 MHz
Flash Memory	512 KB	256 KB	512 KB	1 MB
SRAM	128 KB	64 KB	128 KB	256 KB
Radio Protocols	BLE 5.4, Zigbee, Thread	BLE 5.4, Zigbee, Thread	BLE 5.4, Zigbee, Thread	BLE 5.4, Zigbee, Thread
Supply Voltage	1.71V - 3.6V	1.71V - 3.6V	1.71V - 3.6V	1.7V - 5.5V

Key Differentiators

Higher clock speed than nRF52840 (vs nRF52840)
TrustZone security (vs nRF52840)
Same package as STM32WBA52RGV6 (vs STM32WBA52RGV6)

Design Notes

For optimal radio performance, match the antenna impedance to 50 ohms and place it away from noisy digital traces. Use a ground plane under the RF section and follow the layout guidelines in the STM32WBA application note (AN5405).

Decouple all power supply pins with 100 nF capacitors placed as close as possible to the pins. Use a 1 uF capacitor on the VDDA pin and a 10 uF bulk capacitor on the main supply. For battery-powered designs, consider using the low-power modes to extend battery life.

Use a 32 MHz crystal for the radio and a 32.768 kHz crystal for low-power timing. Place crystals close to the MCU with proper load capacitors. Ensure a clean ground plane and avoid routing high-speed signals near the crystal.