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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.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L552RET6Q STMicroelectronics 1: $17.77 3,176In Stock	Mfr. Part # STM32L552RET6Q Mouser Part # 511-STM32L552RET6Q	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	3,176In Stock	$17.77 $14.44 $13.78 $11.97 View $11.48 $10.84	Min.: 1 Mult.: 1 Max.: 750	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L562VET6Q STMicroelectronics 1: $15.03 5,696In Stock	Mfr. Part # STM32L562VET6Q Mouser Part # 511-STM32L562VET6Q	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	5,696In Stock	$15.03 $12.36 $11.36 $10.86 $9.96	Min.: 1 Mult.: 1 Max.: 540	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L562ZET6Q STMicroelectronics 1: $15.83 2,987In Stock	Mfr. Part # STM32L562ZET6Q Mouser Part # 511-STM32L562ZET6Q	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	2,987In Stock	$15.83 $13.02 $12.07 $11.51 View $11.35 $10.53	Min.: 1 Mult.: 1 Max.: 500	STM32L5		LQFP-144												Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L562QEI6 STMicroelectronics 1: $19.96 2,305In Stock	Mfr. Part # STM32L562QEI6 Mouser Part # 511-STM32L562QEI6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	2,305In Stock	$19.96 $15.41 $13.97 $13.10 View $12.56 $11.95	Min.: 1 Mult.: 1 Max.: 500	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L552QEI6 STMicroelectronics 1: $19.73 2,073In Stock	Mfr. Part # STM32L552QEI6 Mouser Part # 511-STM32L552QEI6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	2,073In Stock	$19.73 $15.47 $14.04 $13.23 View $12.60 $12.24	Min.: 1 Mult.: 1 Max.: 500	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L552VET6Q STMicroelectronics 1: $18.65 542In Stock	Mfr. Part # STM32L552VET6Q Mouser Part # 511-STM32L552VET6Q	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	542In Stock	$18.65 $14.17 $12.59 $11.97 $11.38	Min.: 1 Mult.: 1 Max.: 250	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L552QEI6Q STMicroelectronics 1: $19.77 2,300In Stock	Mfr. Part # STM32L552QEI6Q Mouser Part # 511-STM32L552QEI6Q	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	2,300In Stock	$19.77 $15.49 $14.34 $13.25 View $12.77 $12.34	Min.: 1 Mult.: 1 Max.: 500	STM32L5	SMD/SMT	UFBGA-132												Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash STM32L552ZCT6Q STMicroelectronics 1: $16.85 1,898In Stock	Mfr. Part # STM32L552ZCT6Q Mouser Part # 511-STM32L552ZCT6Q	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	1,898In Stock	$16.85 $13.38 $11.92 $11.22 $10.35	Min.: 1 Mult.: 1 Max.: 300	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash STM32L552VCT6Q STMicroelectronics 1: $17.55 129In Stock	Mfr. Part # STM32L552VCT6Q Mouser Part # 511-STM32L552VCT6Q	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	129In Stock	$17.55 $13.65 $13.02 $11.30	Min.: 1 Mult.: 1 Max.: 100	STM32L5		LQFP-100												Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L562CEU6P STMicroelectronics 1: $17.90 795In Stock	Mfr. Part # STM32L562CEU6P Mouser Part # 511-STM32L562CEU6P	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	795In Stock	$17.90 $13.91 $13.28 $11.52 $11.00	Min.: 1 Mult.: 1 Max.: 250	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L562QEI6Q STMicroelectronics 1: $20.02 679In Stock	Mfr. Part # STM32L562QEI6Q Mouser Part # 511-STM32L562QEI6Q	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	679In Stock	$20.02 $15.71 $14.27 $13.44 View $12.93 $12.56 $11.95 Quote	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash STM32L552CCU6 STMicroelectronics 1: $12.87 4,337In Stock 3,120Expected 2026-09-28	Mfr. Part # STM32L552CCU6 Mouser Part # 511-STM32L552CCU6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	4,337In Stock 3,120Expected 2026-09-28	$12.87 $9.99 $8.84 $8.81 View $8.47 $8.02	Min.: 1 Mult.: 1 Max.: 750	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L552CEU6 STMicroelectronics 1: $17.18 1,156In Stock	Mfr. Part # STM32L552CEU6 Mouser Part # 511-STM32L552CEU6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	1,156In Stock	$17.18 $13.41 $11.88 $11.28 $10.76	Min.: 1 Mult.: 1 Max.: 300	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash STM32L552RCT6 STMicroelectronics 1: $15.84 883In Stock	Mfr. Part # STM32L552RCT6 Mouser Part # 511-STM32L552RCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	883In Stock	$15.84 $12.31 $10.92 $10.20 $9.95	Min.: 1 Mult.: 1 Max.: 250	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L552VET6 STMicroelectronics 1: $18.71 985In Stock	Mfr. Part # STM32L552VET6 Mouser Part # 511-STM32L552VET6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	985In Stock	$18.71 $13.69 $12.61 $12.54 $12.10	Min.: 1 Mult.: 1 Max.: 300	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L552ZET6Q STMicroelectronics 1: $19.67 516In Stock 360On Order	Mfr. Part # STM32L552ZET6Q Mouser Part # 511-STM32L552ZET6Q	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	516In Stock 360On Order	$19.67 $15.44 $13.59 $13.09 $12.92	Min.: 1 Mult.: 1 Max.: 250	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L562ZET6 STMicroelectronics 1: $20.15 30In Stock 360Expected 2027-01-11	Mfr. Part # STM32L562ZET6 Mouser Part # 511-STM32L562ZET6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	30In Stock 360Expected 2027-01-11	$20.15 $15.83 $13.94 $13.12	Min.: 1 Mult.: 1 Max.: 150	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash STM32L552CCT6 STMicroelectronics 1: $15.16 6,000Expected 2026-12-31	Mfr. Part # STM32L552CCT6 Mouser Part # 511-STM32L552CCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 256 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	6,000Expected 2026-12-31	$15.16 $11.92 $10.96 $9.89 View $9.46 $9.04 $8.73 $8.71	Min.: 1 Mult.: 1 Max.: 1,500	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L562CET6 STMicroelectronics 1: $17.45 2,999Expected 2026-12-31	Mfr. Part # STM32L562CET6 Mouser Part # 511-STM32L562CET6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	2,999Expected 2026-12-31	$17.45 $14.18 $13.52 $11.75 View $11.22 $10.53	Min.: 1 Mult.: 1 Max.: 500	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L562MEY6PTR STMicroelectronics 1: $16.79 5,000On Order	Mfr. Part # STM32L562MEY6PTR Mouser Part # 511-STM32L562MEY6PTR	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	5,000On Order	Cut Tape $16.79 $13.10 $12.14 $11.17 $10.41 Reel $10.41 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,000 : 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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L562VET6 STMicroelectronics 1: $19.20 2,452Expected 2027-01-25	Mfr. Part # STM32L562VET6 Mouser Part # 511-STM32L562VET6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	2,452Expected 2027-01-25	$19.20 $15.05 $13.18 $12.51	Min.: 1 Mult.: 1 Max.: 500	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L552CET6 STMicroelectronics 1: $17.15 1,497Expected 2026-12-31	Mfr. Part # STM32L552CET6 Mouser Part # 511-STM32L552CET6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	1,497Expected 2026-12-31	$17.15 $13.35 $12.36 $11.20	Min.: 1 Mult.: 1 Max.: 150	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L552RET6 STMicroelectronics 1: $16.62 1,131Expected 2027-01-21	Mfr. Part # STM32L552RET6 Mouser Part # 511-STM32L552RET6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	1,131Expected 2027-01-21	$16.62 $13.41 $12.31 $11.56	Min.: 1 Mult.: 1 Max.: 150	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L552ZET6 STMicroelectronics 1: $18.46 718Expected 2027-01-11	Mfr. Part # STM32L552ZET6 Mouser Part # 511-STM32L552ZET6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	718Expected 2027-01-11	$18.46 $14.70 $13.42 $12.69	Min.: 1 Mult.: 1 Max.: 150	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
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash STM32L562CEU6 STMicroelectronics 1: $16.69 1,560Expected 2026-12-03	Mfr. Part # STM32L562CEU6 Mouser Part # 511-STM32L562CEU6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 110 MHz 512 kbytes of Flash Learn More about STMicroelectronics stm stm32 l5 mcus	Datasheet	1,560Expected 2026-12-03	$16.69 $13.03 $11.69 $11.10	Min.: 1 Mult.: 1 Max.: 150	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

STM32 L5 Ultra-Low-Power MCUs

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