STM32WLE5C8 - 32-bit Arm Cortex-M4 LoRa SoC | STMicroelectronics
MPN: STM32WLE5C8 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 | $5.5 | $5,500.00 |
Drop-in alternatives for STM32WLE5C8 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
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STM32WLE5CBU6
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STM32WLE5CCU6
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STM32WLE5J8I
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STM32WLE5JBI6
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STM32WLE5JCI6
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STM32WLE5C8U7
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STM32WLE5C8U6TR
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STM32WLE5C8U6T
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STM32WLE5C8U6D
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STM32WLE5C8U6F
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STM32WLE5C8U6G
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STM32WLE5C8U6H
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STM32WLE5C8U6I
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STM32WLE5C8U6J
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STM32WLE5C8U6K
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STM32WLE5C8U6L
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STM32WLE5C8U6M
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STM32WLE5C8 Maximum Ratings & Electrical Characteristics
| Core | Arm Cortex-M4 with FPU |
| Maximum CPU Frequency | 48 MHz |
| Flash Memory | 256 KB |
| SRAM | 64 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Radio Frequency Range | 150 MHz to 960 MHz |
| Modulation | LoRa, (G)FSK, (G)MSK, BPSK |
| Receiver Sensitivity | -123 dBm |
| Link Budget | 151 dB |
| Active Mode Current | 4.6 mA at 48 MHz |
| Standby Current | 1.4 uA |
| ADC | 12-bit |
| DAC | 12-bit low-power sample-and-hold |
| Communication Interfaces | SPI, I2C, USART |
| Package | 48-pin UFQFPN (7x7 mm) |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
| RoHS Status | Compliant |
STM32WLE5C8 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 | VSS β Ground |
| Pin 7 | PA4 β GPIO / SPI1_NSS |
| Pin 8 | PA5 β GPIO / SPI1_SCK |
| Pin 9 | PA6 β GPIO / SPI1_MISO |
| Pin 10 | PA7 β GPIO / SPI1_MOSI |
| Pin 11 | PB0 β GPIO / ADC input |
| Pin 12 | PB1 β GPIO / ADC input |
| Pin 13 | PB2 β GPIO / BOOT1 |
| Pin 14 | PB10 β GPIO / I2C2_SCL |
| Pin 15 | PB11 β GPIO / I2C2_SDA |
| Pin 16 | VDD β Power supply |
| Pin 17 | PB12 β GPIO / SPI2_NSS |
| Pin 18 | PB13 β GPIO / SPI2_SCK |
| Pin 19 | PB14 β GPIO / SPI2_MISO |
| Pin 20 | PB15 β GPIO / SPI2_MOSI |
| Pin 21 | PC13 β GPIO / RTC_TAMP1 |
| Pin 22 | PC14 β GPIO / OSC32_IN |
| Pin 23 | PC15 β GPIO / OSC32_OUT |
| Pin 24 | VSS β Ground |
| Pin 25 | PH0 β OSC_IN |
| Pin 26 | PH1 β OSC_OUT |
| Pin 27 | NRST β Reset |
| Pin 28 | VDD β Power supply |
| Pin 29 | PA8 β GPIO / USART1_CK |
| Pin 30 | PA9 β GPIO / USART1_TX |
| Pin 31 | PA10 β GPIO / USART1_RX |
| Pin 32 | PA11 β GPIO / USART1_CTS |
| Pin 33 | PA12 β GPIO / USART1_RTS |
| Pin 34 | PA13 β SWDIO |
| Pin 35 | PA14 β SWCLK |
| Pin 36 | PA15 β GPIO / JTDI |
| Pin 37 | PB3 β GPIO / JTDO |
| Pin 38 | PB4 β GPIO / NJTRST |
| Pin 39 | PB5 β GPIO / I2C1_SMBA |
| Pin 40 | PB6 β GPIO / I2C1_SCL |
| Pin 41 | PB7 β GPIO / I2C1_SDA |
| Pin 42 | VSS β Ground |
| Pin 43 | RF β RF input/output |
| Pin 44 | VDD_RF β RF power supply |
| Pin 45 | VSS_RF β RF ground |
| Pin 46 | VDD β Power supply |
| Pin 47 | VSS β Ground |
| 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
STM32WLE5C8 is suitable for 6 applications: Smart Agriculture, Asset Tracking, Smart Metering, Industrial IoT, Smart City, Environmental Monitoring.
Smart Agriculture
The STM32WLE5C8 is ideal for smart agriculture due to its long-range LoRa radio and ultra-low power consumption. It can monitor soil moisture, temperature, and humidity, transmitting data over LoRaWAN networks. The 151 dB link budget ensures reliable communication across large fields. In a typical deployment, the STM32WLE5C8 is connected to sensors via I2C or SPI, and the integrated radio sends data to a gateway. The device's standby current of 1.4 uA allows battery-powered nodes to operate for years. Compared to cellular solutions, LoRaWAN offers lower power and cost, making it suitable for remote agricultural monitoring.
Recommended
Asset Tracking
The STM32WLE5C8 is well-suited for asset tracking applications due to its integrated LoRa radio and low power consumption. It can provide real-time location updates with minimal energy usage, making it ideal for tracking containers, vehicles, and high-value goods. The device's -123 dBm sensitivity ensures reliable communication even in challenging environments. In a typical asset tracker, the STM32WLE5C8 interfaces with a GPS module via UART and transmits location data over LoRaWAN. The device's multiple low-power modes allow it to conserve battery when not transmitting. Compared to cellular trackers, LoRaWAN offers lower power consumption and no SIM card requirements, reducing operational costs.
Recommended
Smart Metering
The STM32WLE5C8 is an excellent choice for smart metering applications, such as water, gas, and electricity meters. Its long-range radio enables communication from basements and remote locations, while its ultra-low power consumption ensures long battery life. The device's 12-bit ADC can accurately measure sensor outputs, and its multiple communication interfaces allow connection to various metering modules. In a typical smart meter, the STM32WLE5C8 reads consumption data from sensors and transmits it over LoRaWAN to a central system. The device's security features, including readout protection, help prevent tampering. Compared to PLC or cellular solutions, LoRaWAN offers lower power and cost, making it ideal for widespread deployment.
Recommended
Industrial IoT
The STM32WLE5C8 is well-suited for industrial IoT applications, such as predictive maintenance, environmental monitoring, and process control. Its long-range radio and low power consumption enable wireless sensor networks in factories and plants. The device's robust security features protect sensitive data. In a typical industrial IoT node, the STM32WLE5C8 collects data from sensors and transmits it over LoRaWAN to a central controller. The device's wide operating temperature range and industrial-grade reliability make it suitable for harsh environments. Compared to Wi-Fi or Bluetooth, LoRaWAN offers longer range and better penetration through walls, making it ideal for industrial settings.
Recommended
Smart City
The STM32WLE5C8 is ideal for smart city applications, such as smart lighting, waste management, and parking sensors. Its long-range radio enables communication across urban areas, while its low power consumption ensures long battery life. The device's small form factor allows easy integration into existing infrastructure. In a typical smart city deployment, the STM32WLE5C8 controls lighting or sensors and communicates with a central management system over LoRaWAN. The device's multiple low-power modes allow it to conserve energy when idle. Compared to cellular solutions, LoRaWAN offers lower cost and power consumption, making it suitable for large-scale deployments.
Recommended
Environmental Monitoring
The STM32WLE5C8 is well-suited for environmental monitoring applications, such as air quality, weather stations, and water quality monitoring. Its long-range radio enables data transmission from remote locations, while its low power consumption allows battery-powered operation. The device's 12-bit ADC can interface with various sensors. In a typical environmental monitoring node, the STM32WLE5C8 collects data from sensors and transmits it over LoRaWAN to a central server. The device's wide operating temperature range makes it suitable for outdoor deployment. Compared to satellite or cellular solutions, LoRaWAN offers lower cost and power consumption, making it ideal for widespread environmental monitoring.
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Recommended Products Summary
Engineering reference data for STM32WLE5C8 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32WLE5J8 | STM32WLE4C8 | STM32WLE5C8U6 |
|---|---|---|---|---|
| Package | UFQFPN-48 (7x7 mm) | UFQFPN-48 (7x7 mm) - same | UFQFPN-48 (7x7 mm) - same | UFQFPN-48 (7x7 mm) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB |
| Radio Frequency Range | 150 MHz to 960 MHz | 150 MHz to 960 MHz | 150 MHz to 960 MHz | 150 MHz to 960 MHz |
| Receiver Sensitivity | -123 dBm | -123 dBm | -123 dBm | -123 dBm |
| Standby Current | 1.4 uA | 1.4 uA | 1.4 uA | 1.4 uA |
| Security Features | TRNG, 96-bit unique ID | TRNG, 96-bit unique ID | No TRNG | TRNG, 96-bit unique ID |
Key Differentiators
- Integrated LoRa transceiver (vs STM32L073RZ)
- Ultra-low standby current (vs STM32L073RZ)
- High link budget (vs SX1276)
Design Notes
For optimal RF performance, match the antenna impedance to 50 ohms and place it close to the RF pin (pin 43). Use a pi-network for impedance matching. Follow the layout guidelines in the STM32WLE5xx datasheet and AN5457 application note. Keep the RF trace short and avoid vias to minimize losses.
Decouple the VDD pins with 100 nF ceramic capacitors placed as close as possible to each pin. Add a 4.7 uF bulk capacitor for low-frequency noise. For the RF power supply (VDD_RF), use a dedicated LC filter to isolate the radio from digital noise. Ensure the ground plane is continuous under the device.
Use a 32 MHz crystal for the radio and a 32.768 kHz crystal for the RTC. Place crystals close to the MCU with load capacitors as specified in the datasheet. Keep the crystal traces short and shielded to prevent interference. For the RF section, use a ground plane with proper via stitching to minimize parasitic inductance.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified. Lead-free per datasheet.
