The expanded STM32L4 ecosystem builds on the STM32Cube platform. This comprises the STM32CubeMX initialization-code generator and configurator with power estimation for ultra-low-power design, and the STM32CubeL4 package that contains middleware components, Nucleo-32 Board-Support Package (BSP), Hardware Abstraction Layer (HAL), and Low-Layer APIs (LLAPIs). For a quick start to new projects, the slim-form-factor NUCLEO-L432KC board – the first Nucleo-32 board to integrate an MCU in the tiny QFN32 package - includes an STM32L432KCU6 device (UFQFPN32) and provides direct access to ARM mbed online tools. Its Arduino Nano pin layout simplifies function extensions, and the integrated ST-Link debugger/programmer supports mass storage and allows probe-free debugging.
Five STM32L43x and STM32L44x MCU product lines comprise variants with combinations of an integrated USB controller, an LCD controller, and cryptography for security-conscious applications. Up to 256 KB of Flash and low-pin-count-package choices make them ideal for cost-sensitive applications. The new devices also offer digital peripherals including a True Random-Number Generator (TRNG) and smart analog features such as a 12-bit 5-Msample/s ADC, internal voltage reference, and ultra-low-power comparators.
The devices are available immediately, in small-form-factor packages from 5 mm x 5 mm QFN-32 to 14 mm x 14 mm LQFP-100, including 3.14 mm x 3.13 mm WLCSP. Prices start from $2.045 for the STM32L431KBU6 with 128KByte Flash and 64KByte SRAM in QFN-32, each/10,000.