and higher performance compared to ultra low power L0 series Core: ARM Cortex-M0+ core at a maximum clock rate of 64 MHz. Debug interface is SWD with breakpoints and watchpoints. JTAG debugging isn't supported. Memory: Static RAM sizes of 8 to 128 KB general purpose with hardware parity checking and up to 144 KB without hardware parity checking, 5x 32-bit battery-backed registers with tamper-detection erase. Flash sizes of 16 to 512 KB. STM32 U5 The STM32 U5-series is an evolution of STM32L-series of ultra-low power microcontrollers: ARM Cortex-M33 32-bit core 160 MHz max CPU frequency STM32 L5 The STM32 L5-series is an evolution of STM32L-series of ultra-low power microcontrollers: ARM Cortex-M33 32-bit core 110 MHz max CPU frequency STM32 L4+ The STM32 L4+-series is expansion of STM32L4-series of ultra-low power microcontrollers, providing more performance, more embedded memory and richer graphics and connectivity features while keeping ultra-low-power capability. Main features: ARM 32-bit Cortex-M4 core 120 MHz max CPU frequency VDD from 1.71 V to 3.6 V Ultra low power consumption: down to 41 μA/MHz, 20 nA power consumption in power-down mode. Up to 2048 KB Flash, up to 640 KB SRAM Rich and advanced peripherals, including TFT-LCD controller, Chrom-ART Accelerator, Camera interface etc. STM32 L4 The STM32 L4-series is an evolution of STM32L1-series of ultra-low power microcontrollers. An example of L4 MCU is STM32L432KC in UFQFPN32 package, that has: ARM 32-bit Cortex-M4 core 80 MHz max CPU frequency VDD from 1.65 V to 3.6 V 256 KB Flash, 64 KB SRAM General purpose timers (4), SPI/I2S (2), I2C (2), USART (2), 12-bit ADC with 10 channels (1), GPIO (20) with external interrupt capability, RTC Random number generator (TRNG for HW entropy). STM32 L1 The STM32 L1-series was the first group of STM32 microcontrollers with a primary goal of ultra-low power usage for battery-powered applications. The summary for this series is: Core: ARM Cortex-M3 core at a maximum clock rate of 32 MHz. Memory: Static RAM consists of 10 / 16 / 32 / 48 / 80 KB general purpose, 80 bytes with tamper-detection erase. Flash consists of 32 / 64 / 128 / 256 / 384 / 512 KB general purpose with ECC, 4 / 8 KB system boot, 32 option bytes, EEPROM consists of 4 / 8 / 12 / 16 KB data storage with ECC. Each chip has a factory-programmed 96-bit unique device identifier number. Peripherals: Common peripherals included