STM32L4x5 – New Ultra Low Power Microcontrollers for Industrial, Medical and Smart Home Applications


ByDinesh Kumar 0

STM32L4x5 Ultra Low Power Microcontrollers

STMicroelectronics has introduced new STM32L4P5 and STM32L4Q5 Microcontrollers (MCU) that bring the performance of the Arm Cortex-M4 core to cost-sensitive and power-conscious smart connected devices, including utility meters, industrial and medical sensors, fitness trackers, and smart-home products. The STM32L4+ MCUs delivers the most economic performance in Compact 10mm x 10mm 64-pin and 7mm x 7mm 48-pin packages with the help of their 512KB Flash memory density and 320KB SRAM.

The EEMBC benchmark scores of 409 CoreMArk and 285 ULPMark-CP assures that the new microcontrollers can deliver both high performance and energy efficiency together. The new MCUs provides the flexibility of operation with the help of their independent clock domains, and Octal and Quad SPI interfaces for external memory expansion. The devices also feature a 5Msample/s smart analog-to-digital converter (ADC) that can operate at full speed to minimize acquisition time, or at reduced speed with a lower current.

With the help of ST’s ultra-low-power microcontrollers, the new STM32L4+ MCUs feature seven main low-power modes that allow the designers to manage power consumption and wake-up times to minimize energy demand. The Devices ensure energy-efficient handling of processing loads with the help of FlexPowerControl, it also supports Batch Acquisition Mode for energy-efficient data capture while the CPU is stopped.

The True Random Number Generator and IP protection through limited access to code stored in internal memory act as cyber protection. The STM32L4Q5 devices feature additional cryptographic accelerators that support AES, RSA, DH, and ECC acceleration. There are different types of tool kits that include the hardware abstraction layer and low-layer (HAL/LL) peripheral drivers, middleware components and examples projects that allow the designers to work easily with the new MCUs.

Budgetary pricing starts at $3.90 for the STM32L4P5CEU6 with 512KByte Flash in the QFN48 package, for orders of 10,000 pieces per year. 

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