The new STM32L4+ devices from STMicroelectronics – a new generation of the STM32L4 series that stretches performance to 150 DMIPS (233 ULPMark-CP) at 120 MHz – can act as the central controller in a full range of fitness bands, smart watches, small medical equipment, smart meters, smart industrial sensors and more.
ST has extended the STM32L4 technology to provide more performance (up to 120 MHz), more embedded memory (up to 2 MBytes of Flash memory and 640 KBytes of SRAM) and richer graphics and connectivity features while keeping the ultra‐low‐power capability. The STM32L4+ series delivers a 150 DMIPS/409 CoreMark score while executing from internal Flash memory.
The microcontrollers offer dynamic voltage scaling to balance power consumption with processing demand, low‐power peripherals (LP UART, LP timers) available in stop mode, safety and security features, smart and numerous peripherals, advanced and low‐power analog peripherals such as op-amps, comparators, 12‐bit DACs and 16‐bit ADC (hardware oversampling).
The new STM32L4+ series also embeds advanced graphic features enabling state‐of‐the‐art graphic user interfaces. The Chrom‐ART Accelerator, ST's proprietary 2D hardware graphic accelerator, efficiently handles repetitive graphic operations, releasing the main CPU capabilities for real-time processing or even more advanced graphic operations.
The Chrom‐ART Accelerator is coupled with the large embedded SRAM, the Chrom‐GRC round display memory optimiser, the high-throughput Octo-SPI interface and to the advanced TFT and DSI controllers, allowing designers to achieve ‘smartphone‐like’ graphic user interfaces in a single‐chip and ultra‐low-power solution.
The STM32L4+ series is available in different lines: STM32L4R5/S5, STM32L4R7/S7 (with TFT interface) and STM32L4R9/S9 (with MIPI‐DSI and with TFT interface). To simplify migration and provide flexibility, the STM32L4+ is pin‐to‐pin compatible with the different STM32 series and opens the door to the full STM32 ecosystem.
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