STM32WLE5JC - 32-bit Arm Cortex-M4 LoRa SoC | STMicroelectronics
MPN: STM32WLE5JC β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.12 | $3,060.00 |
| 1,000 | $5.44 | $5,440.00 |
Drop-in alternatives for STM32WLE5JC 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:
STM32WLE5J8
β Drop-Inπ Reference alternative (not in catalog)
STM32WLE5JB
β Drop-Inπ Reference alternative (not in catalog)
STM32WLE5JCI6
β Drop-Inπ Reference alternative (not in catalog)
STM32WLE5J8I6
β Drop-Inπ Reference alternative (not in catalog)
STM32WLE5JBI6
β Drop-Inπ Reference alternative (not in catalog)
STM32WLE5JC Maximum Ratings & Electrical Characteristics
| Core | Arm Cortex-M4 with FPU |
| Max Clock Frequency | 48 MHz |
| Flash Memory | 256 KB |
| SRAM | 64 KB |
| Supply Voltage | 1.8 V to 3.6 V |
| Package | UFQFPN-48 (7x7 mm) |
| Radio Frequency Range | 150 MHz to 960 MHz |
| Modulation | LoRa, (G)FSK |
| Max Transmit Power | +22 dBm |
| Receiver Sensitivity | -123 dBm at 10.4 kbps |
| Standby Current (with RTC) | 1.4 uA |
| Operating Temperature | -40C to +85C |
| AES Encryption | AES-256 |
| TRNG | Yes |
| RoHS Status | Compliant |
STM32WLE5JC Pin Configuration
| Pin 1 | VDD β Power supply (1.8V-3.6V) |
| 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 | PB0 β GPIO / ADC input |
| Pin 11 | PB1 β GPIO / ADC input |
| Pin 12 | PB2 β GPIO / BOOT1 |
| Pin 13 | PB3 β GPIO / SWO |
| Pin 14 | PB4 β GPIO / NJTRST |
| Pin 15 | PB5 β GPIO / I2C1_SMBA |
| Pin 16 | PB6 β GPIO / I2C1_SCL |
| Pin 17 | PB7 β GPIO / I2C1_SDA |
| Pin 18 | PB8 β GPIO / I2C1_SCL |
| Pin 19 | PB9 β GPIO / I2C1_SDA |
| Pin 20 | VSS β Ground |
| Pin 21 | VDD β Power supply |
| Pin 22 | PC14 β GPIO / OSC32_IN |
| Pin 23 | PC15 β GPIO / OSC32_OUT |
| Pin 24 | PH0 β OSC_IN (32 MHz crystal) |
| Pin 25 | PH1 β OSC_OUT (32 MHz crystal) |
| Pin 26 | NRST β Reset (active low) |
| Pin 27 | PC0 β GPIO / ADC input |
| Pin 28 | PC1 β GPIO / ADC input |
| Pin 29 | PC2 β GPIO / ADC input |
| Pin 30 | PC3 β GPIO / ADC input |
| Pin 31 | PC4 β GPIO / ADC input |
| Pin 32 | PC5 β GPIO / ADC input |
| Pin 33 | PB10 β GPIO / USART3_TX |
| Pin 34 | PB11 β GPIO / USART3_RX |
| Pin 35 | PB12 β GPIO / SPI2_NSS |
| Pin 36 | PB13 β GPIO / SPI2_SCK |
| Pin 37 | PB14 β GPIO / SPI2_MISO |
| Pin 38 | PB15 β GPIO / SPI2_MOSI |
| Pin 39 | PA8 β GPIO / MCO |
| Pin 40 | PA9 β GPIO / USART1_TX |
| Pin 41 | PA10 β GPIO / USART1_RX |
| Pin 42 | PA11 β GPIO / USB_DM |
| Pin 43 | PA12 β GPIO / USB_DP |
| Pin 44 | PA13 β SWDIO |
| Pin 45 | PA14 β SWCLK |
| Pin 46 | PA15 β GPIO / JTDI |
| Pin 47 | PB3 β GPIO / JTDO |
| Pin 48 | VDD β Power supply |
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
STM32WLE5JC is suitable for 6 applications: Smart Agriculture, Smart Metering, Asset Tracking, Industrial IoT, Smart City, Environmental Monitoring.
Smart Agriculture
The STM32WLE5JC is ideal for smart agriculture applications such as soil moisture monitoring, weather stations, and livestock tracking. Its long-range LoRa connectivity (up to +22 dBm transmit power and -123 dBm sensitivity) enables data transmission over several kilometers in rural environments. The low power consumption (1.4 uA standby) allows battery-powered sensors to operate for years without maintenance. In a typical deployment, the STM32WLE5JC reads sensors via I2C or SPI, processes data with the Cortex-M4 core, and transmits via LoRa to a central gateway. The integrated AES-256 encryption ensures secure data transmission. Compared to cellular solutions, LoRa offers lower power and cost, making it suitable for large-scale agricultural networks.
Recommended
Smart Metering
The STM32WLE5JC is well-suited for smart metering applications including gas, water, and electricity meters. Its long-range LoRa communication enables remote reading without the need for frequent site visits, reducing operational costs. The device's low power consumption (1.4 uA standby) supports battery life of over 10 years, meeting utility requirements. The integrated AES-256 encryption secures consumption data, preventing tampering. In a typical smart meter, the STM32WLE5JC interfaces with metrology sensors, calculates consumption, and transmits data periodically via LoRaWAN. The wide supply voltage range (1.8V to 3.6V) accommodates various battery configurations. The high transmit power (+22 dBm) ensures reliable communication even in dense urban environments.
Recommended
Asset Tracking
The STM32WLE5JC is ideal for asset tracking applications, providing long-range, low-power wireless connectivity for tracking containers, vehicles, and equipment. Its compact UFQFPN-48 package and integrated radio reduce PCB size, making it suitable for small tracking devices. The device's low power consumption enables battery-powered trackers to operate for months or years. The LoRa modulation provides excellent penetration in urban environments, allowing tracking in warehouses and shipping yards. In a typical asset tracker, the STM32WLE5JC uses GPS or other location sensors, processes location data, and transmits it via LoRa to a central server. The device's wide operating temperature range (-40C to +85C) ensures reliable operation in harsh environments.
Recommended
Industrial IoT
The STM32WLE5JC is suitable for industrial IoT applications such as predictive maintenance, environmental monitoring, and process control. Its robust design and wide temperature range make it suitable for factory environments. The integrated LoRa radio enables wireless communication in industrial settings where Wi-Fi or cellular may be unreliable. The device's multiple low-power modes allow energy-efficient operation, reducing maintenance costs. In a typical industrial IoT node, the STM32WLE5JC collects data from sensors (temperature, vibration, pressure), processes it with the Cortex-M4 core, and transmits alerts or periodic data via LoRa. The AES-256 encryption ensures data integrity and security. The device's high transmit power (+22 dBm) ensures reliable communication in noisy industrial environments.
Recommended
Smart City
The STM32WLE5JC is used in smart city applications such as smart lighting, waste management, and parking sensors. Its long-range LoRa connectivity allows city-wide coverage with minimal infrastructure. The low power consumption enables battery-powered devices to operate for years, reducing maintenance costs. The device's compact package and integrated radio simplify installation in streetlights, bins, and parking spaces. In a typical smart city deployment, the STM32WLE5JC controls lighting or sensors, communicates with a central management system via LoRaWAN, and receives commands for remote control. The device's wide supply voltage range (1.8V to 3.6V) accommodates various power sources, including solar panels and batteries.
Recommended
Environmental Monitoring
The STM32WLE5JC is ideal for environmental monitoring applications such as air quality monitoring, weather stations, and water quality monitoring. Its long-range LoRa connectivity enables data collection from remote or distributed locations. The low power consumption allows solar-powered or battery-operated devices to operate autonomously for extended periods. The device's multiple ADC channels and communication interfaces (SPI, I2C, UART) allow easy integration with various sensors. In a typical environmental monitoring station, the STM32WLE5JC reads sensors, logs data, and transmits it periodically via LoRa to a central database. The device's robust design and wide temperature range ensure reliable operation in outdoor environments.
Recommended
Recommended Products Summary
Engineering reference data for STM32WLE5JC β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32WLE5J8 | STM32WLE5JB | STM32WLE5JCI6 | SX1262 |
|---|---|---|---|---|---|
| Package | UFQFPN-48 (7x7 mm) | UFQFPN-48 (7x7 mm) - same | UFQFPN-48 (7x7 mm) - same | UFQFPN-48 (7x7 mm) - same | QFN-24 (4x4 mm) - different |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Semtech |
| Flash Memory | 256 KB | 192 KB | 128 KB | 256 KB | N/A (external MCU required) |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | N/A |
| Max Transmit Power | +22 dBm | +22 dBm | +22 dBm | +22 dBm | +22 dBm |
| Receiver Sensitivity | -123 dBm at 10.4 kbps | -123 dBm at 10.4 kbps | -123 dBm at 10.4 kbps | -123 dBm at 10.4 kbps | -123 dBm at 10.4 kbps |
| Standby Current (with RTC) | 1.4 uA | 1.4 uA | 1.4 uA | 1.4 uA | 0.6 uA (radio only) |
| Integrated MCU | Yes (Cortex-M4) | Yes (Cortex-M4) | Yes (Cortex-M4) | Yes (Cortex-M4) | No (external MCU required) |
Key Differentiators
- Integrated LoRa transceiver with Arm Cortex-M4 (vs SX1262)
- Higher flash memory (256 KB) (vs STM32WLE5JB)
- Industrial temperature grade option (vs STM32WLE5JC (standard))
Design Notes
For optimal RF performance, place the 32 MHz crystal close to the PH0/PH1 pins and ensure a clean ground plane beneath the RF section. Use a 50-ohm impedance-controlled trace for the RF output to the antenna. Add a matching network as recommended in the STM32WLE5JC application note AN5457. Keep the antenna away from high-speed digital traces to minimize interference.
Decouple each VDD pin with a 100 nF ceramic capacitor placed as close as possible to the pin. Additionally, place a 4.7 uF capacitor on the main VDD rail. The SMPS can be enabled to improve efficiency; when using the SMPS, add the recommended inductor and capacitors as per the datasheet. Ensure the supply voltage stays within 1.8V to 3.6V to avoid damage.
The STM32WLE5JC in UFQFPN-48 package has a thermal resistance (theta_JA) of approximately 40 C/W. At maximum transmit power (+22 dBm), the device may dissipate up to 0.5W, causing a temperature rise of 20C. Ensure adequate copper area on the PCB for heat dissipation, especially in high-temperature environments. The operating temperature range is -40C to +85C.
Compliance Information
RoHS and REACH compliant per STMicroelectronics product page. Not AEC-Q100 qualified (not intended for automotive).
