STM32WL55CCU6 - Dual-core Arm Cortex-M4/M0+ LoRa SoC | STMicroelectronics
MPN: STM32WL55CCU6 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.75 | $8.75 |
| 10 | $7.92 | $79.20 |
| 100 | $6.98 | $698.00 |
| 500 | $6.25 | $3,125.00 |
| 1,000 | $5.6 | $5,600.00 |
Drop-in alternatives for STM32WL55CCU6 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STM32WL55JCI6
β Drop-Inβ 99,999 In Stock
$8.1 / Unit
View Datasheet βSTM32WL55CCV6
β Drop-Inπ Reference alternative (not in catalog)
STM32WL55CCU7
β Drop-Inπ Reference alternative (not in catalog)
STM32WL54CCU6
β Drop-Inπ Reference alternative (not in catalog)
STM32WL55CCU6TR
β Drop-Inπ Reference alternative (not in catalog)
STM32WL55CCU6 Maximum Ratings & Electrical Characteristics
| Core | Arm Cortex-M4 + Cortex-M0+ |
| Max CPU Frequency | 48 MHz |
| Flash Memory | 256 KB |
| SRAM | 64 KB |
| Radio Modulation | LoRa, (G)FSK, (G)MSK, BPSK |
| Radio Sensitivity | -137 dBm (LoRa) |
| Supply Voltage | 1.8 V to 3.6 V |
| Package | UFQFPN-48 (7x7 mm) |
| Operating Temperature | -40C to +85C |
| ADC | 12-bit, 1 MSPS |
| DAC | 12-bit |
| Timers | Advanced-control, general-purpose, basic |
| Communication Interfaces | SPI, I2C, USART, LPUART |
| Low Power Modes | Sleep, Stop, Standby |
| Standby Current | 1.62 uA (with RTC) |
| RoHS Status | Compliant |
STM32WL55CCU6 Pin Configuration
| Pin 1 | VDD β Power supply |
| Pin 2 | PA0 β GPIO / ADC input |
| Pin 3 | PA1 β GPIO / ADC input |
| Pin 4 | PA2 β GPIO / USART2_TX |
| Pin 5 | PA3 β GPIO / USART2_RX |
| Pin 6 | PA4 β GPIO / SPI1_NSS |
| Pin 7 | PA5 β GPIO / SPI1_SCK |
| Pin 8 | PA6 β GPIO / SPI1_MISO |
| Pin 9 | PA7 β GPIO / SPI1_MOSI |
| Pin 10 | PA8 β GPIO / MCO |
| Pin 11 | PA9 β GPIO / USART1_TX |
| Pin 12 | PA10 β GPIO / USART1_RX |
| Pin 13 | PA11 β GPIO / USB_DM |
| Pin 14 | PA12 β GPIO / USB_DP |
| Pin 15 | PA13 β GPIO / SWDIO |
| Pin 16 | PA14 β GPIO / SWCLK |
| Pin 17 | PA15 β GPIO / JTDI |
| Pin 18 | PB0 β GPIO / ADC input |
| Pin 19 | PB1 β GPIO / ADC input |
| Pin 20 | PB2 β GPIO / BOOT1 |
| Pin 21 | PB3 β GPIO / JTDO |
| Pin 22 | PB4 β GPIO / NJTRST |
| Pin 23 | PB5 β GPIO / I2C1_SMBA |
| Pin 24 | PB6 β GPIO / I2C1_SCL |
| Pin 25 | PB7 β GPIO / I2C1_SDA |
| Pin 26 | PB8 β GPIO / I2C1_SCL |
| Pin 27 | PB9 β GPIO / I2C1_SDA |
| Pin 28 | PB10 β GPIO / I2C2_SCL |
| Pin 29 | PB11 β GPIO / I2C2_SDA |
| Pin 30 | PB12 β GPIO / SPI2_NSS |
| Pin 31 | PB13 β GPIO / SPI2_SCK |
| Pin 32 | PB14 β GPIO / SPI2_MISO |
| Pin 33 | PB15 β GPIO / SPI2_MOSI |
| Pin 34 | PC13 β GPIO / RTC_TAMP1 |
| Pin 35 | PC14 β GPIO / OSC32_IN |
| Pin 36 | PC15 β GPIO / OSC32_OUT |
| Pin 37 | PH0 β OSC_IN |
| Pin 38 | PH1 β OSC_OUT |
| Pin 39 | NRST β Reset |
| Pin 40 | VDD β Power supply |
| Pin 41 | VSS β Ground |
| Pin 42 | VDDA β Analog power supply |
| Pin 43 | VSSA β Analog ground |
| Pin 44 | VREF+ β ADC reference voltage |
| Pin 45 | VREF- β ADC reference ground |
| Pin 46 | RF β RF input/output |
| Pin 47 | GND β Ground |
| Pin 48 | GND β Ground |
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
STM32WL55CCU6 is suitable for 6 applications: Smart Agriculture, Smart Metering, Asset Tracking, Smart City, Industrial Monitoring, Smart Home.
Smart Agriculture
The STM32WL55CCU6 is ideal for smart agriculture applications such as soil moisture monitoring, weather stations, and crop health sensors. Its sub-GHz LoRa radio provides long-range communication (up to several kilometers) with low power consumption, enabling battery-powered sensors to transmit data to a central gateway. The dual-core architecture allows the Cortex-M0+ to handle radio communication while the Cortex-M4 processes sensor data, optimizing power and performance. The device's low-power modes, including Standby with 1.62 uA current, extend battery life in remote field deployments. The wide operating temperature range (-40C to +85C) ensures reliable operation in outdoor environments. The integrated ADC and communication interfaces (SPI, I2C, USART) simplify interfacing with various sensors such as temperature, humidity, and soil moisture probes. The STM32WL55CCU6's support for LoRaWAN protocol enables seamless integration with existing IoT platforms, making it a cost-effective solution for precision agriculture.
Recommended
Smart Metering
The STM32WL55CCU6 is well-suited for smart metering applications such as electricity, water, and gas meters. Its integrated sub-GHz radio enables reliable communication with utility networks over long distances, while the low-power design ensures long battery life (up to 10+ years). The dual-core architecture allows the Cortex-M0+ to handle radio protocol stack while the Cortex-M4 runs metering algorithms and data processing. The device's multiple communication interfaces (SPI, I2C, USART) facilitate connection to metering sensors and displays. The STM32WL55CCU6 supports LoRaWAN and Sigfox protocols, making it compatible with major IoT networks. The wide supply voltage range (1.8V to 3.6V) accommodates various battery configurations. The device's robust security features, including a random number generator and hardware encryption, ensure data integrity and privacy. The UFQFPN-48 package is compact, allowing for small form factor meter designs.
Recommended
Asset Tracking
The STM32WL55CCU6 is ideal for asset tracking applications, providing long-range, low-power wireless connectivity for tracking goods, vehicles, and equipment. Its sub-GHz radio with -137 dBm sensitivity ensures reliable communication in challenging environments, such as warehouses and outdoor areas. The device's low-power modes enable battery-powered trackers to operate for months or years without recharging. The dual-core architecture allows the Cortex-M0+ to handle radio communication while the Cortex-M4 processes GPS or sensor data. The STM32WL55CCU6 supports LoRaWAN, which is widely used in asset tracking networks. The device's small UFQFPN-48 package and integrated radio reduce PCB size and BOM cost. The wide operating temperature range (-40C to +85C) makes it suitable for tracking assets in extreme conditions. The device's multiple timers and ADC enable precise time-stamping and sensor data acquisition.
Recommended
Smart City
The STM32WL55CCU6 is a key component in smart city applications such as smart lighting, waste management, and environmental monitoring. Its sub-GHz radio provides long-range communication for city-wide IoT networks, while the low-power design ensures minimal maintenance. The dual-core architecture allows efficient handling of sensor data and radio communication. The device's support for LoRaWAN enables easy integration with smart city platforms. The STM32WL55CCU6's multiple communication interfaces (SPI, I2C, USART) allow connection to various sensors and actuators. The device's wide operating temperature range (-40C to +85C) ensures reliable operation in outdoor urban environments. The integrated ADC and DAC enable analog sensor interfacing and control. The UFQFPN-48 package is compact, suitable for installation in streetlights, waste bins, and environmental monitoring stations. The device's low-power modes extend battery life in solar-powered or battery-operated installations.
Recommended
Industrial Monitoring
The STM32WL55CCU6 is suitable for industrial monitoring applications such as predictive maintenance, process control, and equipment health monitoring. Its sub-GHz radio enables wireless communication in industrial environments where Wi-Fi or Bluetooth may be unreliable. The device's dual-core architecture allows the Cortex-M0+ to handle radio communication while the Cortex-M4 runs real-time control algorithms. The STM32WL55CCU6's robust design, with a wide operating temperature range (-40C to +85C), ensures reliable operation in harsh industrial conditions. The device's multiple timers and ADC enable precise measurement of vibration, temperature, and pressure. The integrated communication interfaces (SPI, I2C, USART) allow connection to industrial sensors and actuators. The device's low-power modes reduce energy consumption in battery-powered monitoring nodes. The STM32WL55CCU6 supports LoRaWAN, which is increasingly used in industrial IoT networks for long-range, low-power communication.
Recommended
Smart Home
The STM32WL55CCU6 can be used in smart home applications such as smart locks, environmental sensors, and home automation gateways. Its sub-GHz radio provides long-range communication within a home, and its low-power design allows battery-powered devices to operate for years. The dual-core architecture enables efficient handling of sensor data and radio communication. The device's support for LoRaWAN and Sigfox protocols allows integration with smart home ecosystems. The STM32WL55CCU6's multiple communication interfaces (SPI, I2C, USART) facilitate connection to sensors, actuators, and displays. The device's small UFQFPN-48 package is suitable for compact smart home devices. The wide supply voltage range (1.8V to 3.6V) accommodates various battery configurations. The device's low-power modes, including Standby with 1.62 uA, extend battery life in devices that are mostly in sleep mode. The integrated ADC and DAC enable analog sensor interfacing and control.
Recommended
Recommended Products Summary
Engineering reference data for STM32WL55CCU6 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32WL55JCI6 | STM32WL55CCV6 | STM32WL55CCU7 | STM32WL54CCU6 |
|---|---|---|---|---|---|
| Package | UFQFPN-48 (7x7 mm) | UFQFPN-48 (7x7 mm) - same | UFQFPN-48 (7x7 mm) - same | UFQFPN-48 (7x7 mm) - same | UFQFPN-48 (7x7 mm) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | Cortex-M4 + Cortex-M0+ | Cortex-M4 + Cortex-M0+ | Cortex-M4 + Cortex-M0+ | Cortex-M4 + Cortex-M0+ | Cortex-M0+ only |
| Max CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 64 MHz | 48 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Radio Sensitivity | -137 dBm (LoRa) | -137 dBm (LoRa) | -137 dBm (LoRa) | -137 dBm (LoRa) | -137 dBm (LoRa) |
| Supply Voltage | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
Key Differentiators
- Integrated sub-GHz radio with LoRa support (vs STM32WL54CCU6)
- Dual-core architecture (vs STM32WL54CCU6)
- Higher maximum CPU frequency option (vs STM32WL55CCU7)
Design Notes
For optimal radio performance, match the antenna impedance to 50 ohms and place the antenna away from noisy digital traces. Use a ground plane on the PCB and ensure proper decoupling of the RF supply pins. Refer to ST's application note AN5457 for detailed RF layout guidelines.
Decouple the VDD and VDDA pins with 100 nF ceramic capacitors placed as close as possible to the pins. Use a 4.7 uF bulk capacitor on the main supply. For battery-powered applications, consider using the low-power modes to extend battery life.
The UFQFPN-48 package has a thermal resistance of approximately 40 C/W (theta_JA). For high-power applications, ensure adequate copper area on the PCB to dissipate heat. The device's maximum junction temperature is 125C, so calculate power dissipation to avoid exceeding this limit.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified.
