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STM32L552ZET6

STM32L552ZET6

STMicroelectronics
ARM® Cortex®-M33 STM32L5 Microcontroller IC 32-Bit 110MHz 512KB (512K x 8) FLASH 144-LQFP (20x20)
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Overview

The STM32L552ZET6 is a high-performance, ultra-low-power microcontroller based on the ARM Cortex-M33 core with TrustZone security. Operating at up to 110MHz, it integrates 512KB of Flash and 256KB of RAM, providing a secure foundation for IoT applications through hardware-based isolation. The device features an integrated SMPS to optimize power efficiency and includes a comprehensive set of peripherals like FDCAN, USB, and 14-bit ADC.

Why Choose This Part

The implementation of Arm TrustZone allows for full hardware isolation of critical code and peripherals, significantly enhancing system security. Its advanced power management, including an integrated SMPS and a wide supply range down to 1.71V, enables high-speed 110MHz operation with minimal current draw.

Applications

Secure IoT Endpoints
Leverages TrustZone and hardware accelerators for HASH and TRNG to protect sensitive credentials and firmware in connected devices.
Industrial Sensor Nodes
Utilizes the 14-bit ADC and low-power Stop modes for precise, long-term monitoring in remote industrial environments.
Portable Medical Devices
The ultra-low power consumption and small 144-LQFP footprint suit battery-operated diagnostic equipment requiring secure data handling.
Smart Metering
Combines high-density memory for data logging with multiple communication interfaces like FDCAN and UART for utility monitoring.

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 111
Core Processor ARM Cortex-M33
Package / Case 144-LQFP
Data Converters A/D 14x12b; 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 144-LQFP (20x20)
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V

Getting Started

Developers should use the NUCLEO-L552ZE-Q development board for rapid prototyping and access to the integrated SMPS. Software development is supported by the STM32CubeL5 ecosystem, which provides HAL drivers, security examples, and integration with STM32CubeIDE or IAR Embedded Workbench.

STM32L552 Family

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

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

Categories

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