ARM Microcontrollers - MCU

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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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Part #

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

Datasheet

3,176In Stock

$17.77

$14.44

$13.78

$11.97

View

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

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

Datasheet

2,987In Stock

$15.83

$13.02

$12.07

$11.51

View

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

Datasheet

2,305In Stock

$19.96

$15.41

$13.97

$13.10

View

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
2,174In 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

Datasheet

2,174In Stock

$19.73

$15.47

$14.04

$13.23

View

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 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

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 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

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

Datasheet

2,300In Stock

$19.77

$15.49

$14.34

$13.25

View

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

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

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

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

Datasheet

679In Stock

$20.02

$15.71

$14.27

$13.44

View

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

Datasheet

4,337In Stock

3,120Expected 2026-09-28

$12.87

$9.99

$8.84

$8.81

View

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

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

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

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

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

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

Datasheet

6,000Expected 2026-12-31

$15.16

$11.92

$10.96

$9.89

View

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

Datasheet

2,999Expected 2026-12-31

$17.45

$14.18

$13.52

$11.75

View

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

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

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

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

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

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

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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