STMicroelectronics

STM32WBA52CEU6 - 32-bit Arm Cortex-M33 BLE 5.4 MCU | STMicroelectronics

Name: STM32WBA52CEU6
Brand: STMicroelectronics
Price: 6.50 USD
Availability: InStock

MPN: STM32WBA52CEU6 ✓ Active

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

1.71 V to 3.6 V Vdss 2.2 uA (with RTC) Id UFQFPN-48 (7x7 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 STM32WBA52CEU6 — 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:

STM32WBA52CEU6TR

✅ Drop-In

📦 UFQFPN-48

Same die, tape and reel packaging variant

📋 Reference alternative (not in catalog)

STM32WBA55CEU6

✅ Drop-In

📦 UFQFPN-48

Same package, double flash (1 MB vs 512 KB), additional security features

📋 Reference alternative (not in catalog)

STM32WBA52CEU6

✅ Drop-In

STMicroelectronics

📦 UFQFPN-48

Arm Cortex-M33 with TrustZone · 100 MHz · 512 KB · 128 KB · 1.71 V to 3.6 V · -40C to +85C · UFQFPN-48 (7x7 mm) · Surface Mount

✓ 99,999 In Stock

$4.16 / Unit

View Datasheet →

nRF52840

⚡ Same Package

📦 QFN-48

Cross-brand, Cortex-M4F core, BLE 5.0, different pinout

📋 Reference alternative (not in catalog)

EFR32BG22

⚡ Same Package

📦 QFN-48

Cross-brand, Cortex-M33 core, BLE 5.2, different pinout

📋 Reference alternative (not in catalog)

STM32WBA52CEU6 Maximum Ratings & Electrical Characteristics

Core	Arm Cortex-M33 with TrustZone
Maximum Clock Frequency	100 MHz
Flash Memory	512 KB
SRAM	128 KB
Supply Voltage Range	1.71 V to 3.6 V
Operating Temperature Range	-40C to +85C
Package	UFQFPN-48 (7x7 mm)
Mounting Type	Surface Mount
Radio	2.4 GHz BLE 5.4
Link Budget	105 dB
ADC	12-bit, up to 16 channels
Communication Interfaces	SPI, I2C, USART, USB
Timers	Multiple 16-bit and 32-bit timers
Security	TrustZone, secure boot, crypto accelerators
Low-Power Modes	Sleep, Stop, Standby
Standby Current	2.2 uA (with RTC)
RoHS Status	Compliant

STM32WBA52CEU6 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	PB10 — GPIO
Pin 22	PB11 — GPIO
Pin 23	PB12 — GPIO
Pin 24	PB13 — GPIO
Pin 25	PB14 — GPIO
Pin 26	PB15 — GPIO
Pin 27	PC0 — GPIO/ADC
Pin 28	PC1 — GPIO/ADC
Pin 29	PC2 — GPIO/ADC
Pin 30	PC3 — GPIO/ADC
Pin 31	PC4 — GPIO
Pin 32	PC5 — GPIO
Pin 33	PC6 — GPIO
Pin 34	PC7 — GPIO
Pin 35	PC8 — GPIO
Pin 36	PC9 — GPIO
Pin 37	PC10 — GPIO
Pin 38	PC11 — GPIO
Pin 39	PC12 — GPIO
Pin 40	PC13 — GPIO/RTC
Pin 41	PC14 — GPIO/OSC32_IN
Pin 42	PC15 — GPIO/OSC32_OUT
Pin 43	PH0 — OSC_IN
Pin 44	PH1 — OSC_OUT
Pin 45	NRST — Reset
Pin 46	VDDA — Analog power supply
Pin 47	VSSA — Analog ground
Pin 48	RF — RF input/output

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

STM32WBA52CEU6 is suitable for 6 applications: Smart Home Devices, Industrial Sensors, Medical Wearables, Asset Tracking, Secure IoT Edge Nodes, Beacons and Proximity Marketing.

🏠

Smart Home Devices

The STM32WBA52CEU6 is ideal for smart home devices such as smart locks, sensors, and lighting controls. Its BLE 5.4 radio provides reliable wireless connectivity, while the TrustZone security ensures secure communication and firmware updates. The low-power modes extend battery life, making it suitable for battery-powered devices. In a typical smart lock application, the MCU manages the motor driver, reads the keypad, and communicates with a smartphone via BLE. The 512 KB flash allows for complex application logic and OTA updates. The device's security features protect against unauthorized access, ensuring the integrity of the lock system.

Recommended

STM32WBA52CEU6 · STMicroelectronics SHT30 (Temperature/humidity sensor) DRV8837 (Motor driver for lock mechanism)

🏭

Industrial Sensors

In industrial environments, the STM32WBA52CEU6 can be used in wireless sensor nodes for monitoring temperature, vibration, and pressure. Its robust security features protect against cyber threats, and the BLE 5.4 radio enables long-range communication with a link budget of 105 dB. The MCU's multiple communication interfaces (SPI, I2C, USART) allow easy integration with various sensors. The low-power modes are crucial for battery-operated sensors that need to operate for years. The device's wide operating temperature range (-40C to +85C) ensures reliable operation in harsh conditions. In a typical vibration sensor node, the MCU samples the accelerometer, processes the data, and transmits alerts via BLE.

Recommended

STM32WBA52CEU6 · STMicroelectronics ADXL345 (Accelerometer) BME280 (Pressure/humidity sensor)

💊

Medical Wearables

The STM32WBA52CEU6 is well-suited for medical wearables like heart rate monitors and glucose sensors. Its low power consumption (2.2 uA standby) extends battery life, and the security features protect patient data. The BLE 5.4 radio allows secure data transmission to a smartphone or gateway. The MCU's FPU and DSP instructions enable efficient signal processing for biosignal analysis. In a heart rate monitor, the MCU reads the optical sensor, processes the PPG signal, and sends heart rate data via BLE. The device's small UFQFPN-48 package fits compact wearable designs. The TrustZone technology ensures that sensitive medical data is isolated and protected.

Recommended

STM32WBA52CEU6 · STMicroelectronics MAX30102 (Heart rate sensor) BQ25120 (Battery charger)

📦

Asset Tracking

The STM32WBA52CEU6 is perfect for asset tracking devices that require long battery life and reliable wireless communication. The BLE 5.4 radio supports advertising extensions and long-range modes, enabling tracking over large areas. The low-power modes allow the device to operate for months on a coin cell battery. The MCU's security features prevent unauthorized tracking and ensure data integrity. In a typical asset tracker, the MCU periodically wakes up, reads the GPS module, and transmits the location via BLE. The 512 KB flash stores tracking data and firmware updates. The device's small package and low power make it ideal for compact, battery-powered trackers.

Recommended

STM32WBA52CEU6 · STMicroelectronics u-blox M8 (GPS module) TP4056 (Battery charger)

🔒

Secure IoT Edge Nodes

The STM32WBA52CEU6 is designed for secure IoT edge nodes that require hardware-enforced security. The TrustZone technology isolates secure and non-secure code, protecting cryptographic keys and sensitive data. The hardware crypto accelerators (AES, RSA, ECC) enable efficient encryption and authentication. The BLE 5.4 radio provides secure wireless communication with support for secure connections. In a typical IoT edge node, the MCU collects sensor data, encrypts it, and sends it to a gateway via BLE. The device's low power consumption is essential for battery-powered nodes. The 512 KB flash allows for secure boot and OTA updates, ensuring the device remains secure over its lifetime.

Recommended

STM32WBA52CEU6 · STMicroelectronics ATECC608A (Secure element) SX1262 (LoRa transceiver)

📡

Beacons and Proximity Marketing

The STM32WBA52CEU6 can be used in BLE beacons for proximity marketing and indoor navigation. Its BLE 5.4 radio supports advertising extensions, allowing for more data in advertisements. The low power consumption enables beacon operation for years on a coin cell battery. The MCU's security features prevent spoofing and unauthorized modifications. In a typical beacon, the MCU broadcasts a unique identifier at regular intervals. The device's small package and low cost make it ideal for mass deployment. The 512 KB flash allows for storing configuration and firmware updates. The device's wide operating temperature range ensures reliable operation in various environments.

Recommended

STM32WBA52CEU6 · STMicroelectronics CR2032 (Coin cell battery) LIS3DH (Motion sensor)

Recommended Products Summary

STM32WBA52CEU6 STMicroelectronics Used in: Smart Home Devices, Industrial Sensors, Medical Wearables, Asset Tracking, Secure IoT Edge Nodes, Beacons and Proximity Marketing SHT30 Temperature/humidity sensor Used in: Smart Home Devices DRV8837 Motor driver for lock mechanism Used in: Smart Home Devices ADXL345 Accelerometer Used in: Industrial Sensors BME280 Pressure/humidity sensor Used in: Industrial Sensors MAX30102 Heart rate sensor Used in: Medical Wearables BQ25120 Battery charger Used in: Medical Wearables u-blox M8 GPS module Used in: Asset Tracking TP4056 Battery charger Used in: Asset Tracking ATECC608A Secure element Used in: Secure IoT Edge Nodes SX1262 LoRa transceiver Used in: Secure IoT Edge Nodes CR2032 Coin cell battery Used in: Beacons and Proximity Marketing LIS3DH Motion sensor Used in: Beacons and Proximity Marketing

What is the core of STM32WBA52CEU6?

The STM32WBA52CEU6 is based on the Arm Cortex-M33 core with TrustZone, running at up to 100 MHz. According to the STM32WBA52CE datasheet, it includes a floating-point unit (FPU) and DSP instructions, making it suitable for signal processing and secure applications.

What is the flash memory size of STM32WBA52CEU6?

The STM32WBA52CEU6 has 512 KB of flash memory and 128 KB of SRAM. This generous memory capacity allows for complex application code and data buffering, as stated in the STM32WBA52CE datasheet.

Does STM32WBA52CEU6 support Bluetooth Low Energy?

Yes, the STM32WBA52CEU6 integrates a 2.4 GHz radio that supports Bluetooth Low Energy (BLE) 5.4. It offers a link budget of 105 dB, enabling long-range communication, as detailed in the STM32WBA52CE datasheet.

What is the operating voltage range of STM32WBA52CEU6?

The STM32WBA52CEU6 operates from 1.71V to 3.6V. This wide range allows for battery-powered applications, as specified in the STM32WBA52CE datasheet.

What is the package type of STM32WBA52CEU6?

The STM32WBA52CEU6 comes in a UFQFPN-48 package with dimensions of 7x7 mm. This surface-mount package is suitable for compact PCB designs, as indicated in the STM32WBA52CE datasheet.

What security features does STM32WBA52CEU6 offer?

The STM32WBA52CEU6 includes Arm TrustZone, secure boot, and hardware cryptographic accelerators. These features provide hardware-enforced isolation and secure key storage, as described in the STM32WBA52CE datasheet.

What is the standby current of STM32WBA52CEU6?

The STM32WBA52CEU6 has a standby current of 2.2 uA with the RTC running. This low power consumption is critical for battery-powered IoT devices, as noted in the STM32WBA52CE datasheet.

Where can I buy STM32WBA52CEU6 online?

You can purchase STM32WBA52CEU6 from authorized distributors such as DigiKey and Mouser. As of 2026-08-09, the price for 1 unit is approximately $6.50 USD, with volume discounts available.

What is the price of STM32WBA52CEU6?

As of 2026-08-09, the price of STM32WBA52CEU6 is approximately $6.50 USD for a single unit, decreasing to $4.16 USD at 1000 units. Prices may vary by distributor and availability.

What is the lead time for STM32WBA52CEU6?

The lead time for STM32WBA52CEU6 is typically 8-12 weeks from major distributors, depending on stock levels. For current lead times, check DigiKey or Mouser product pages as of 2026-08-09.

Is STM32WBA52CEU6 in stock?

Stock availability for STM32WBA52CEU6 varies by distributor. As of 2026-08-09, DigiKey and Mouser may have limited stock; check their websites for real-time inventory.

STM32WBA52CEU6 vs STM32WBA55CEU6 - which is better for BLE applications?

The STM32WBA52CEU6 and STM32WBA55CEU6 are both BLE 5.4 MCUs, but the WBA55 offers more flash (1 MB vs 512 KB) and additional security features. For most BLE applications, the WBA52 is sufficient and more cost-effective, while the WBA55 is better for complex applications requiring more memory.

What is the difference between STM32WBA52CEU6 and STM32WBA55CEU6?

The main difference is flash memory: STM32WBA52CEU6 has 512 KB, while STM32WBA55CEU6 has 1 MB. Both share the same core, package, and BLE 5.4 radio, but the WBA55 also includes additional security features like a dedicated hardware crypto cell.

When should I choose STM32WBA52CEU6 over STM32WBA55CEU6?

Choose STM32WBA52CEU6 when your application requires up to 512 KB of flash and you want to minimize cost and power consumption. If you need more memory or enhanced security, select the STM32WBA55CEU6.

What is the best drop-in replacement for STM32WBA52CEU6?

The best drop-in replacement for STM32WBA52CEU6 is the STM32WBA52CEU6TR (tape and reel variant) or the STM32WBA55CEU6 if you need more flash. Both are pin-compatible in the UFQFPN-48 package, but verify the flash size difference.

Can STM32WBA55CEU6 replace STM32WBA52CEU6?

Yes, the STM32WBA55CEU6 is a drop-in replacement for STM32WBA52CEU6 in the same UFQFPN-48 package, offering double the flash (1 MB vs 512 KB). However, ensure your firmware fits within the smaller flash if using the WBA52.

Where to download STM32WBA52CEU6 datasheet PDF?

You can download the STM32WBA52CEU6 datasheet PDF from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32wba52ce.pdf. It contains full specifications, pinout, and application notes.

Where to find STM32WBA52CEU6 pinout?

The STM32WBA52CEU6 pinout is detailed in the datasheet available at https://www.st.com/resource/en/datasheet/stm32wba52ce.pdf. The UFQFPN-48 package has 48 pins, including power, ground, GPIO, and RF pins.

Hey Google, what can replace STM32WBA52CEU6?

The STM32WBA52CEU6 can be replaced by the STM32WBA55CEU6 (same package, more flash) or the Nordic nRF52840 (cross-brand, but different package). For a true drop-in, stick with STM32WBA52CEU6 variants.

Is STM32WBA52CEU6 the same as STM32WBA55CEU6?

No, they are not the same. The STM32WBA52CEU6 has 512 KB flash, while the STM32WBA55CEU6 has 1 MB flash. Both share the same core, package, and BLE 5.4 radio, but the WBA55 offers more memory and additional security features.

What are the key specifications of STM32WBA52CEU6 that engineers should know?

Engineers should know that the STM32WBA52CEU6 features a 100 MHz Arm Cortex-M33 core, 512 KB flash, 128 KB SRAM, BLE 5.4 radio with 105 dB link budget, and operates from 1.71V to 3.6V. It includes TrustZone security and multiple low-power modes, with standby current of 2.2 uA.

What is the best cross-brand equivalent for STM32WBA52CEU6?

The best cross-brand equivalent for STM32WBA52CEU6 is the Nordic nRF52840, which offers a Cortex-M4F core, BLE 5.0, and similar memory. However, it is not pin-compatible, so a PCB redesign is required.

Engineering reference data for STM32WBA52CEU6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32WBA52CEU6 when you need a secure, low-power MCU with integrated BLE 5.4 for IoT applications. It is ideal for smart home, industrial sensors, and medical wearables. If you need more flash memory (1 MB), consider the STM32WBA55CEU6, which is pin-compatible. For cross-brand alternatives, the Nordic nRF52840 offers similar features but requires a PCB redesign due to different pinout. The Silicon Labs EFR32BG22 is another option but has less SRAM and lower BLE version. For most applications, the STM32WBA52CEU6 provides the best balance of performance, security, and power efficiency.

Comparison with Alternatives

Parameter	This Product	STM32WBA52CEU6TR	STM32WBA55CEU6	nRF52840	EFR32BG22
Package	UFQFPN-48	UFQFPN-48	UFQFPN-48	QFN-48	QFN-48
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	Nordic Semiconductor	Silicon Labs
Core	Arm Cortex-M33	Arm Cortex-M33	Arm Cortex-M33	Arm Cortex-M4F	Arm Cortex-M33
Max Clock Frequency	100 MHz	100 MHz	100 MHz	64 MHz	76.8 MHz
Flash Memory	512 KB	512 KB	1 MB	1 MB	512 KB
SRAM	128 KB	128 KB	128 KB	256 KB	32 KB
BLE Version	5.4	5.4	5.4	5.0	5.2
Link Budget	105 dB	105 dB	105 dB	103 dB	104 dB
Security	TrustZone, secure boot, crypto	TrustZone, secure boot, crypto	TrustZone, secure boot, crypto	ARM TrustZone, crypto	Secure Vault, crypto

Key Differentiators

Integrated BLE 5.4 with 105 dB link budget (vs nRF52840)
TrustZone security with hardware crypto accelerators (vs EFR32BG22)
Larger SRAM (128 KB) compared to EFR32BG22 (32 KB) (vs EFR32BG22)

Design Notes

Decouple each VDD pin with a 100 nF ceramic capacitor placed as close as possible to the pin. Additionally, place a 1 uF capacitor on VDDA for analog performance. For battery-powered designs, consider using the low-power modes (Sleep, Stop, Standby) to minimize current consumption. In Standby mode with RTC, the current is only 2.2 uA, which is ideal for battery life.

For the BLE radio, follow the antenna layout guidelines in the STM32WBA52CE datasheet. Keep the RF trace short and impedance-matched (50 ohms). Place the antenna away from noisy components and ground planes. Use a ground plane under the MCU to reduce EMI. Ensure proper grounding of the exposed pad (EP) for thermal and electrical performance.

Do not exceed the absolute maximum ratings for supply voltage (3.6V) and I/O pins. Ensure the NRST pin is properly pulled up with a 100 nF capacitor to ground for reliable reset. When using the ADC, connect VDDA to a clean analog supply and use a dedicated ground (VSSA) to avoid noise. For OTA updates, ensure the flash memory has enough space for the bootloader and application images.