STM32WL3x Low-Power Sub-GHz Wireless MCUs

STMicroelectronics STM32WL3x Low-Power Sub-GHz Wireless MCUs are designed to provide efficient long-range communication for IoT applications. Built on the Arm® Cortex®-M0+ core, these microcontrollers operate at up to 64MHz and integrate a sub-GHz dual radio, offering high flexibility and reduced bill of materials (BoM) costs. With up to 256K-bytes of flash memory and 32K-bytes of SRAM, the STM32WL3x line supports multiple modulation schemes, including 4-(G)FSK, (G)MSK, DBPSK, DSSS, OOK, and ASK. The main radio provides long-range connectivity with an RX sensitivity of up to -132dBm and a programmable TX power of up to +20dBm. Additionally, the dedicated wake-up radio ensures ultra-low power consumption, achieving down to 4.2μA in always-on mode. These features make the STM32WL3x MCUs ideal for applications such as smart homes, city infrastructure management, asset tracking, and various IoT devices.

Types of Microcontrollers - MCU
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STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless Microcontrollers. Sing-core Arm Cortex-M0+ at 64 MHz with 64 Kbytes of Flash memory, 8 Kbytes of SRAM. 2(G)FSK, 4(G)FSK, OOK, ASK, D-BPSK, DSSS modulation I/Q channel interface. AES 128. Multiprotocol System-on-Chip.
Datasheet
77In Stock
2,940Expected 4/30/2027
Min.: 1
Mult.: 1

SMD/SMT VFQFPN-32 ARM Cortex M0+ 32 bit 64 MHz 64 kB 8 kB 12 bit 18 I/O 1.7 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless Microcontrollers. Sing-core Arm Cortex-M0+ at 64 MHz with 64 Kbytes of Flash memory, 8 Kbytes of SRAM. 2(G)FSK, 4(G)FSK, OOK, ASK, D-BPSK, DSSS modulation I/Q channel interface. AES 128. Multiprotocol System-on-Chip.
Datasheet
131In Stock
Min.: 1
Mult.: 1
Max.: 30

SMD/SMT VFQFPN-32 ARM Cortex M0+ 32 bit 64 MHz 64 kB 8 kB 12 bit 18 I/O 1.7 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless Microcontrollers. Sing-core Arm Cortex-M0+ at 64 MHz with 128 Kbytes of Flash memory, 16 Kbytes of SRAM. 2(G)FSK, 4(G)FSK, OOK, ASK, D-BPSK, DSSS modulation I/Q channel interface. AES 128. Multiprotocol System-on-Chip.
Datasheet
121In Stock
Min.: 1
Mult.: 1

SMD/SMT VFQFPN-32 ARM Cortex M0+ 32 bit 64 MHz 128 kB 16 kB 12 bit 18 I/O 1.7 V 3.6 V + 85 C Tray
STMicroelectronics RF Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64MHz 64 Kb Flash 16 Kb SRAM
Datasheet
2,898In Stock
Min.: 1
Mult.: 1

SMD/SMT ARM Cortex M0+ 32 bit 64 MHz 128 KB 12 bit 1.7 V 3.6 V Tray
STMicroelectronics RF Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64MHz 64 Kb Flash 16 Kb SRAM
Datasheet
3,077In Stock
Min.: 1
Mult.: 1

SMD/SMT ARM Cortex M0+ 32 bit 64 MHz 128 KB 12 bit 1.7 V 3.6 V Tray
STMicroelectronics RF Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64MHz 64Kbytes Flash 16KbyteSRAM
Datasheet
2,520In Stock
Min.: 1
Mult.: 1

SMD/SMT ARM Cortex M0+ 32 bit 64 MHz 128 KB 12 bit 1.7 V 3.6 V Tray

STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ a.64 MHz 256 Kb Flash 32 Kb SRAM
Datasheet
36In Stock
Min.: 1
Mult.: 1

SMD/SMT VQFN-48 ARM Cortex M0+ 32 bit 64 MHz 256 kB 32 kB 12 bit 32 I/O 1.7 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless Microcontrollers. Sing-core Arm Cortex-M0+ at 64 MHz with 128 Kbytes of Flash memory, 16 Kbytes of SRAM. 2(G)FSK, 4(G)FSK, OOK, ASK, D-BPSK, DSSS modulation I/Q channel interface. AES 128. Multiprotocol System-on-Chip.
Datasheet
30In Stock
2,940Expected 10/9/2026
Min.: 1
Mult.: 1

SMD/SMT VFQFPN-32 ARM Cortex M0+ 32 bit 64 MHz 128 kB 16 kB 12 bit 18 I/O 1.7 V 3.6 V + 85 C Tray
STMicroelectronics RF Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 64 Kb Flash 16 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 1
Mult.: 1

SMD/SMT ARM Cortex M0+ 32 bit 64 MHz 128 KB 12 bit 1.7 V 3.6 V Tray
STMicroelectronics RF Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 64 Kb Flash 16 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 2,940
Mult.: 2,940

SMD/SMT ARM Cortex M0+ 32 bit 64 MHz 128 KB 12 bit 1.7 V 3.6 V Tray
STMicroelectronics RF Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 64 Kb Flash 16 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 2,940
Mult.: 2,940

SMD/SMT ARM Cortex M0+ 32 bit 64 MHz 128 KB 12 bit 1.7 V 3.6 V Tray
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 64 Kb Flash 16 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-48 ARM Cortex M0+ 32 bit 64 MHz 64 kB 16 kB 12 bit 32 I/O 1.7 V 3.6 V + 85 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 64 Kb Flash 16 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-48 ARM Cortex M0+ 32 bit 64 kB 16 kB 12 bit 32 I/O 1.7 V 3.6 V + 105 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 128 Kb Flash 32 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-48 ARM Cortex M0+ 32 bit 64 MHz 128 kB 32 kB 12 bit 32 I/O 1.7 V 3.6 V + 85 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 128 Kb Flash 32 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-48 ARM Cortex M0+ 32 bit 128 kB 32 kB 12 bit 32 I/O 1.7 V 3.6 V + 105 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ a.64 MHz 256 Kb Flash 32 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-48 ARM Cortex M0+ 32 bit 64 MHz 256 kB 32 kB 12 bit 32 I/O 1.7 V 3.6 V + 85 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 256 Kb Flash 32 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-48 ARM Cortex M0+ 32 bit 64 MHz 256 kB 32 kB 12 bit 32 I/O 1.7 V 3.6 V + 85 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 256 Kb Flash 32 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 2,940
Mult.: 2,940

SMD/SMT VQFN-48 ARM Cortex M0+ 32 bit 256 kB 32 kB 12 bit 32 I/O 1.7 V 3.6 V + 105 C Tray
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 256 Kb Flash 32 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-48 ARM Cortex M0+ 32 bit 256 kB 32 kB 12 bit 32 I/O 1.7 V 3.6 V + 105 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 256 Kb Flash 32 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-48 ARM Cortex M0+ 32 bit 256 kB 32 kB 12 bit 32 I/O 1.7 V 3.6 V + 105 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64MHz 64K Flash 16K SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-32 ARM Cortex M0+ 32 bit 64 MHz 256 kB 32 kB 12 bit 17 I/O 1.7 V 3.6 V + 85 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64MHz 64K Flash 16K SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-32 ARM Cortex M0+ 32 bit 256 kB 32 kB 12 bit 17 I/O 1.7 V 3.6 V + 105 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 128 Kb Flash 32 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-32 ARM Cortex M0+ 32 bit 64 MHz 256 kB 32 kB 12 bit 17 I/O 1.7 V 3.6 V + 85 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 128 Kb Flash 32 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-32 ARM Cortex M0+ 32 bit 256 kB 32 kB 12 bit 17 I/O 1.7 V 3.6 V + 105 C Reel
STMicroelectronics ARM Microcontrollers - MCU Sub-GHz Wireless MCU Single-core Arm Cortex-M0+ 64 MHz 256 Kb Flash 32 Kb SRAM
Datasheet
Non-Stocked Lead-Time 52 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

SMD/SMT VQFN-32 ARM Cortex M0+ 32 bit 64 MHz 256 kB 32 kB 12 bit 17 I/O 1.7 V 3.6 V + 85 C Reel