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STM32L552RET6

STM32L552RET6

STMicroelectronics
Cortex-M33-based STM32L5-series alternative targeting low-power, secure edge applications with similar feature set.
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Overview

The STM32L552RET6 is a high-performance, ultra-low-power microcontroller based on the Arm Cortex-M33 core with TrustZone technology. Operating at up to 110MHz, it provides a unique balance of advanced security features, significant 256KB RAM capacity, and low power consumption suitable for secure edge computing.

Why Choose This Part

This MCU stands out by integrating TrustZone security with high-efficiency power management, achieving run currents as low as 7.0mA at 80MHz in SMPS mode. Its comprehensive peripheral set includes 512KB of ECC-protected Flash and a hardware HASH accelerator, ensuring data integrity and fast cryptographic operations.

Applications

Secure IoT Gateways
Utilizes TrustZone for hardware-isolated execution environments to protect sensitive cryptographic keys and communication stacks.
Battery-Powered Industrial Sensors
Leverages multiple low-power modes and Batch Acquisition Mode (BAM) to minimize current draw during periodic sensor data collection.
Secure Wearables
Combines a small LQFP64 footprint with active tamper detection and hardware acceleration for secure user data processing.
Smart Metering
Provides dual 12-bit DACs, 16-channel 12-bit ADCs, and digital filters for sigma-delta modulators (DFSDM) for high-precision metrology.

Key Specifications

Speed 110MHz
RAM Size 256K x 8
Core Size 32-Bit
Peripherals Brown-out Detect/Reset, DMA, PWM, WDT
Connectivity CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 52
Core Processor ARM Cortex-M33
Package / Case 64-LQFP
Data Converters A/D 16x12b; D/A 2x12b
Oscillator Type Internal
Program Memory Size 512KB (512K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 64-LQFP (10x10)
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V

Getting Started

Start development using the STM32CubeL5 software package and the STM32CubeIDE ecosystem. For hardware evaluation, the NUCLEO-L552ZE-Q board provides a compatible environment to test TrustZone configurations and low-power modes using the FlexPowerControl features.

Dev Boards

Development boards and breakout modules featuring the STM32L552RET6 or compatible chips — ready to use for prototyping.

NUCLEO-L552ZE-Q STMicroelectronics
STM32L552 Nucleo-144 STM32L5 ARM® Cortex®-M33 MCU 32-Bit Embedded Evaluation Board
Digi-Key 453 in stock
Part of STM32L5 family » STM32L552

STM32L552 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number I/O Pins Package ADC/DAC Stock
STM32L552RET6 (this part) 52 LQFP-64 A/D 16x12b; D/A 2x.. 901
STM32L552VET6 83 LQFP-100 A/D 16x12b; D/A 2x.. 1,937
STM32L552ZET6 111 LQFP-144 A/D 14x12b; D/A 2x.. —
STM32L552CET6 38 LQFP-48 A/D 9x12b; D/A 2x12b —

Also Consider

ATSAML11E16A-AU MCHPMicrochip - Alternative Cortex-M33 solution with TrustZone and specialized capacitive touch hardware for simpler secure interfaces.

Categories

Microcontrollers > Industrial MCUs Wearables & Medical > Ultra-Low Power MCUs IoT & Smart Devices > IoT Security & Crypto