STM32L562RET6

STM32L562RET6 is STMicroelectronics’ ultra‑low‑power 32‑bit MCU in the STM32L5 family. It combines a Cortex‑M33 core (Armv8‑M) with TrustZone‑M security, a floating‑point unit, and DSP instructions, running up to about 110 MHz. It offers substantial on‑chip Flash and RAM and a broad peripheral set for battery‑powered apps: USB Full‑Speed, CAN, UART/SPI/I2C, multiple timers, ADCs, comparators, op‑amps, RTC, and cryptographic accelerators with hardware RNG. The device emphasizes energy efficiency with multiple low‑power modes and advanced power management, ideal for wearables, medical, and industrial sensors. It also supports secure boot and code isolation via TrustZone for firmware and data protection. The RET6 package is a 64‑pin LQFP. Development is supported by ST’s STM32CubeMX/IDE toolchain, HAL/LL drivers, and secure software libraries.

Key features of STM32L562RET6 (STM32L5 series):
- CPU: ARM Cortex-M33, DSP-capable, single-precision FPU; up to ~110 MHz.
- Security: Arm TrustZone-M, MPU, secure boot and secure firmware updates.
- Power: ultra-low-power with multiple sleep/standby modes and dynamic voltage scaling.
- Memory: on-chip Flash and RAM (variant-dependent; options in hundreds of KB range).
- Crypto: hardware cryptography engine (AES/DES/SHA), TRNG, and public-key acceleration in some configurations.
- Peripherals: USB 2.0 Full-Speed OTG/device; LCD/TFT controller; I2C, SPI, UART/LPUART.
- Analog/digital: multiple 12-bit ADCs, DACs, op-amps, and comparators; temperature sensor.
- Timers: multiple general-purpose timers and advanced-control timer (PWM, timing features).
- DMA: multi-channel DMA controller for peripherals.
- Package: RET6 (64-pin) variant available.
- Voltage/Temp: operating range 1.65–3.6 V; industrial temperature support.
Note: exact flash/SRAM sizes and some peripheral options vary by device variant.

- Pin count: 64 pins (LQFP64/UFQFPN64 package variants)
- Function: 32‑bit ARM Cortex‑M33 microcontroller from the STM32L5 family (low‑power embedded MCU for general control with on‑chip flash/RAM and peripherals).

- Manufacturer: STMicroelectronics (STMicroelectronics N.V.)
- What kind of company: A multinational semiconductor and electronics company that designs, develops, and manufactures integrated circuits, microcontrollers, sensors, and related components.

Common application areas for STM32L562RET6:
- Battery-powered wearables and medical sensors
- Industrial and environmental IoT sensors and gateways
- Smart metering, energy management, and home/building automation
- Portable medical devices and handheld instruments
- Smart lighting, HVAC controllers, and consumer electronics
- Security-critical embedded devices leveraging TrustZone-M and crypto peripherals

LQFP-64 package (64-pin LQFP, 10×10 mm).