STM32L4R9 and STM32L4S9 devices extend the ultra‐low‐power portfolio and performance with an ARM® Cortex®‐M4 core with DSP and floating‐point unit (FPU) at 120 MHz.
- The STM32L4R9 portfolio offers from 1 to 2 Mbytes of Flash memory and from 100 to 169-pin packages.
- The STM32L4S9 is avaialble with 2 Mbytes of Flash memory and provides an additional encryption accelerator engine (AES, HASH).

Featured Videos
This video is about the STM32L5, our recently announced ultra-low power microcontroller bringing a new security dimension. The STM32L5 is now in full production and all its ecosystem is available including hardware kits, software tools, firmware and all documentations of course. This is our first STM32 based on Cortex-M33 and its Trustzone and using specific ST security implementation - watch the video to find out more!
The STM32L5 is based on Arm® Cortex-M33 and TrustZone® technology combined with STMicroelectronics security implementation. On your STM32L562E-DK discovery board, TrustZone is disabled (factory setting) and you can develop as on any other STM32 device. This video shows how to enable TrustZone on STM32L562E-DK discovery using STM32CubeProgrammer and create, compile and debug or run a new project with STM32CubeIDE. It also shows how to open an example project delivered in STM32CubeL5 MCU Package, modify, compile and debug or run it. For further information, you can refer to AN5394 and AN5424 application notes.
MadeForSTM32™ is a new quality label delivered by ST, which is granted after an evaluation process. It helps engineers identify third party solutions with the highest level of integration and quality for the STM32 microcontrollers' ecosystem. MadeForSTM32™ is offered to members of the ST Partner Program who want to go one step further in our collaboration, with the overall objective of contributing to a high-quality STM32 ecosystem.
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STM32L4R9ZI
Ultra-low-power with FPU Arm Cortex-M4 MCU 120 MHz with 2048 kbytes of Flash memory, USB OTG, DFSDM, LCD-TFT, MIPI DSI
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STM32L4R9ZG
Ultra-low-power with FPU Arm Cortex-M4 MCU 120 MHz with 1024 kbytes of Flash memory, USB OTG, DFSDM, LCD-TFT, MIPI DSI
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STM32L4R9AG
Ultra-low-power with FPU Arm Cortex-M4 MCU 120 MHz with 1024 kbytes of Flash memory, USB OTG, DFSDM, LCD-TFT, MIPI DSI
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STM32L4R9VG
Ultra-low-power with FPU Arm Cortex-M4 MCU 120 MHz with 1024 kbytes of Flash memory, USB OTG, DFSDM, LCD-TFT, MIPI DSI
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STM32L4S9AI
Ultra-low-power with FPU Arm Cortex-M4 MCU 120 MHz with 2048 kbytes of Flash memory, USB OTG, DFSDM, LCD-TFT, MIPI DSI, AES-256, HASH
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STM32L4R9AI
Ultra-low-power with FPU Arm Cortex-M4 MCU 120 MHz with 2048 kbytes of Flash memory, USB OTG, DFSDM, LCD-TFT, MIPI DSI
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STM32L4S9ZI
Ultra-low-power with FPU Arm Cortex-M4 MCU 120 MHz with 2048 kbytes of Flash memory, USB OTG, DFSDM, LCD-TFT, MIPI DSI, AES-256, HASH
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STM32L4S9VI
Ultra-low-power with FPU Arm Cortex-M4 MCU 120 MHz with 2048 kbytes of Flash memory, USB OTG, DFSDM, LCD-TFT, MIPI DSI, AES-256, HASH
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STM32L4R9VI
Ultra-low-power with FPU Arm Cortex-M4 MCU 120 MHz with 2048 kbytes of Flash memory, USB OTG, DFSDM, LCD-TFT, MIPI DSI
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