![]() The devices embed high-speed memories (256-Kbyte flash memory, 64-Kbyte SRAM), and an extensive range of enhanced I/Os and peripherals. Both cores implement an independent memory protection unit (MPU) that enhances the application security. It is complemented by an Arm ® Cortex ®-M0+ microcontroller. This core implements a full set of DSP instructions. These devices are designed to be extremely low-power and are based on the high-performance Arm ® Cortex ®-M4 32-bit RISC core operating at a frequency of up to 48 MHz. The LoRa ® modulation is available in STM32WLx5xx only. The STM32WL55/54xx long-range wireless and ultra-low-power devices embed a powerful and ultra-low-power LPWAN-compliant radio solution, enabling the following modulations: LoRa ®, (G)FSK, (G)MSK, and BPSK.
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