STM32 L5 Ultra-Low-Power MCUs

STMicroelectronics STM32 L5 Ultra-Low-Power MCUs are designed for an embedded application that requires more security and low power consumption. These MCUs are based on Arm® Cortex®-M33 processor and its TrustZone® for Armv8-M combined with ST security implementation. The STM32 L5 MCUs feature 512Kbytes of flash memory and 256Kbytes of SRAM. With the help of an Arm 32-bit Cortex-M33 core and an ST ART Acccelerator™, the STM32 L5 MCUs reach an upgraded level of performance. These STM32 L5 MCUs offer a large portfolio with 7 packages and support up to +125°C ambient temperature.

Results: 36
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Description Datasheet Availability Pricing (CHF) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Mounting Style
Package/Case
Core
Program Memory Size
Data Bus Width
ADC Resolution
Maximum Clock Frequency
Number of I/Os
Data RAM Size
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
3’303In Stock
Min.: 1
Mult.: 1

STM32L552RE SMD/SMT LQFP-64 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 47 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
5’772In Stock
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-100 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 79 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
2’987In Stock
Min.: 1
Mult.: 1

STM32L5 LQFP-144 Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
542In Stock
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-100 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 79 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash
Datasheet
1’898In Stock
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-144 ARM Cortex M33 256 kB 32 bit 2 x 12 bit 110 MHz 111 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
2’305In Stock
Min.: 1
Mult.: 1

STM32L5 SMD/SMT UFBGA-132 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 110 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
2’174In Stock
Min.: 1
Mult.: 1

STM32L5 SMD/SMT UFBGA-132 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 108 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
2’317In Stock
Min.: 1
Mult.: 1

STM32L5 SMD/SMT UFBGA-132 Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
795In Stock
Min.: 1
Mult.: 1

STM32L5 SMD/SMT UFQFPN-48 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 36 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash
Datasheet
129In Stock
Min.: 1
Mult.: 1

STM32L5 LQFP-100 Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
679In Stock
Min.: 1
Mult.: 1

STM32L5 SMD/SMT UFBGA-132 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 105 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash
Datasheet
4’164In Stock
3’120On Order
Min.: 1
Mult.: 1

STM32L5 SMD/SMT UFQFPN-48 ARM Cortex M33 256 kB 32 bit 2 x 12 bit 110 MHz 38 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
1’638In Stock
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-100 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 83 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
546In Stock
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-144 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 111 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash
Datasheet
6In Stock
960Expected 9/29/2026
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-64 ARM Cortex M33 256 kB 32 bit 2 x 12 bit 110 MHz 52 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
2In Stock
1’560Expected 10/1/2026
Min.: 1
Mult.: 1

STM32L5 SMD/SMT UFQFPN-48 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 38 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
20In Stock
2’700On Order
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-100 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 83 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
30In Stock
360Expected 12/2/2026
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-144 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 115 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash
Datasheet
6’000Expected 11/23/2026
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-48 ARM Cortex M33 256 kB 32 bit 2 x 12 bit 110 MHz 38 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
3’120Expected 8/13/2026
Min.: 1
Mult.: 1

STM32L5 SMD/SMT UFQFPN-48 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 38 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
2’999Expected 11/23/2026
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-48 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 38 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
5’000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 5’000

STM32L5 SMD/SMT WLCSP-81 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 54 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
1’497Expected 11/23/2026
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-48 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 38 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
1’131On Order
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-64 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 52 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash
Datasheet
718Expected 12/2/2026
Min.: 1
Mult.: 1

STM32L5 SMD/SMT LQFP-144 ARM Cortex M33 512 kB 32 bit 2 x 12 bit 110 MHz 115 I/O 256 kB 1.71 V 3.6 V - 40 C + 85 C Tray