STMicroelectronics

STM32L562RET6 - 512KB Flash, 110MHz Cortex-M33 MCU | STMicroelectronics

Name: STM32L562RET6
Brand: STMicroelectronics
Price: 5.44 USD
Availability: InStock

MPN: STM32L562RET6 ✓ Active

In Stock Ships in 1-3 business days

1.71 V to 3.6 V Vdss 100 nA Id 64-LQFP (10x10 mm) Package 110 MHz Speed 512 KB Memory

From $5.44 USD / Unit

MOQ: 1 |

Price updated: 2026-08-17

Volume Pricing

Qty	Unit Price	Extended
1	$8.5	$8.50
10	$7.65	$76.50
100	$6.8	$680.00
500	$6.12	$3,060.00
1,000	$5.44	$5,440.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32L562RET6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM32L562RET6TR

✅ Drop-In

📦 64-LQFP (10x10 mm)

Same die and package, tape-and-reel packaging variant

📋 Reference alternative (not in catalog)

STM32L562RET6Q

✅ Drop-In

📦 64-LQFP (10x10 mm)

Extended temperature range variant, same package

📋 Reference alternative (not in catalog)

STM32L562RET6V

✅ Drop-In

📦 64-LQFP (10x10 mm)

Variant with different ordering code, same package and core

📋 Reference alternative (not in catalog)

STM32L552RET6

✅ Drop-In

STMicroelectronics

📦 64-LQFP (10x10 mm)

Arm Cortex-M33 with TrustZone and FPU · 110 MHz · 512 KB · 256 KB · 1.71 V to 3.6 V · -40°C to +85°C · 64-LQFP (10x10 mm) · Surface Mount

✓ In Stock

$5.48 / Unit

View Datasheet →

STM32L562REI6

✅ Drop-In

📦 64-LQFP (10x10 mm)

Industrial temperature range, same package

📋 Reference alternative (not in catalog)

STM32L562RET6 Maximum Ratings & Electrical Characteristics

Core	Arm Cortex-M33 with TrustZone
Maximum Clock Frequency	110 MHz
Flash Memory	512 KB
SRAM	256 KB
Package	64-LQFP (10x10 mm)
Supply Voltage Range	1.71 V to 3.6 V
Operating Temperature Range	-40C to +85C
Standby Current	100 nA
ADC Resolution	12-bit
Number of I/O Pins	[DATA_NEEDED: Number of I/O pins]
Communication Interfaces	UART, SPI, I2C, USB
Cryptographic Accelerator	AES, RSA, ECC
True Random Number Generator	Yes
Process Technology	40 nm
RoHS Status	Compliant

STM32L562RET6 Pin Configuration

Pin 1	VBAT — Battery backup supply
Pin 2	PC13 — GPIO / RTC output
Pin 3	PC14 — GPIO / OSC32_IN
Pin 4	PC15 — GPIO / OSC32_OUT
Pin 5	PF0 — GPIO
Pin 6	PF1 — GPIO
Pin 7	NRST — Reset
Pin 8	VDD — Digital power supply
Pin 9	VSS — Ground
Pin 10	VDDA — Analog power supply
Pin 11	PA0 — GPIO / ADC input
Pin 12	PA1 — GPIO / ADC input
Pin 13	PA2 — GPIO / USART2_TX
Pin 14	PA3 — GPIO / USART2_RX
Pin 15	PA4 — GPIO / SPI1_NSS
Pin 16	PA5 — GPIO / SPI1_SCK
Pin 17	PA6 — GPIO / SPI1_MISO
Pin 18	PA7 — GPIO / SPI1_MOSI
Pin 19	PA8 — GPIO / USB_OTG_FS_SOF
Pin 20	PA9 — GPIO / USART1_TX
Pin 21	PA10 — GPIO / USART1_RX
Pin 22	PA11 — GPIO / USB_DM
Pin 23	PA12 — GPIO / USB_DP
Pin 24	PA13 — GPIO / SWDIO
Pin 25	PA14 — GPIO / SWCLK
Pin 26	PA15 — GPIO / JTDI
Pin 27	PB0 — GPIO / ADC input
Pin 28	PB1 — GPIO / ADC input
Pin 29	PB2 — GPIO / BOOT1
Pin 30	PB3 — GPIO / JTDO
Pin 31	PB4 — GPIO / NJTRST
Pin 32	PB5 — GPIO / I2C1_SMBA
Pin 33	PB6 — GPIO / I2C1_SCL
Pin 34	PB7 — GPIO / I2C1_SDA
Pin 35	PB8 — GPIO / I2C1_SCL
Pin 36	PB9 — GPIO / I2C1_SDA
Pin 37	PB10 — GPIO / I2C2_SCL
Pin 38	PB11 — GPIO / I2C2_SDA
Pin 39	PB12 — GPIO / SPI2_NSS
Pin 40	PB13 — GPIO / SPI2_SCK
Pin 41	PB14 — GPIO / SPI2_MISO
Pin 42	PB15 — GPIO / SPI2_MOSI
Pin 43	PC0 — GPIO / ADC input
Pin 44	PC1 — GPIO / ADC input
Pin 45	PC2 — GPIO / ADC input
Pin 46	PC3 — GPIO / ADC input
Pin 47	PC4 — GPIO / ADC input
Pin 48	PC5 — GPIO / ADC input
Pin 49	PC6 — GPIO / TIM3_CH1
Pin 50	PC7 — GPIO / TIM3_CH2
Pin 51	PC8 — GPIO / TIM3_CH3
Pin 52	PC9 — GPIO / TIM3_CH4
Pin 53	PC10 — GPIO / USART3_TX
Pin 54	PC11 — GPIO / USART3_RX
Pin 55	PC12 — GPIO / USART3_CK
Pin 56	PD0 — GPIO / OSC_IN
Pin 57	PD1 — GPIO / OSC_OUT
Pin 58	PD2 — GPIO / TIM1_ETR
Pin 59	PD3 — GPIO / USART2_CTS
Pin 60	PD4 — GPIO / USART2_RTS
Pin 61	PD5 — GPIO / USART2_TX
Pin 62	PD6 — GPIO / USART2_RX
Pin 63	PD7 — GPIO / USART2_CK
Pin 64	VDD — Digital power supply

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

STM32L562RET6 is suitable for 6 applications: Secure IoT Nodes, Smart Meters, Wearable Health Monitors, Industrial Sensors, Battery-Powered Medical Devices, Smart Home Controllers.

🧩

Secure IoT Nodes

The STM32L562RET6 is ideal for secure IoT nodes due to its ultra-low power consumption, TrustZone security, and hardware cryptographic accelerator. These features enable secure communication and data protection in edge devices. In a typical IoT node, the MCU collects sensor data, encrypts it using the AES accelerator, and transmits it via a low-power wireless interface. The standby current of 100 nA ensures long battery life, while the Cortex-M33 core provides sufficient processing power for protocol stacks and edge processing. Designers should configure the low-power modes and use the RTC for periodic wake-ups to maximize battery life.

Recommended

SX1262 (LoRa transceiver for long-range communication) BME280 (Environmental sensor for temperature, humidity, and pressure)

⚡

Smart Meters

The STM32L562RET6 is well-suited for smart meters, where accurate measurement, secure communication, and low power are essential. The 12-bit ADC provides precise analog measurements for current and voltage sensing, while the cryptographic accelerator ensures secure data transmission to the utility grid. The MCU's low-power modes allow it to operate on battery backup during power outages. In a typical smart meter, the STM32L562RET6 reads sensor data, processes it, and communicates via a wireless module. The TrustZone security isolates metering firmware from communication stacks, preventing tampering. Designers should use the internal RTC for time-stamping and schedule periodic data uploads to minimize power consumption.

Recommended

HLW8032 (Energy metering IC for power measurement) SX1276 (LoRa transceiver for wireless communication)

💊

Wearable Health Monitors

The STM32L562RET6 is an excellent choice for wearable health monitors, offering ultra-low power consumption and secure data handling. The MCU can process biometric signals from sensors like heart rate monitors and accelerometers, while the TrustZone security protects patient data. The 100 nA standby current allows the device to operate for extended periods on a small battery. In a typical wearable, the STM32L562RET6 collects sensor data, runs signal processing algorithms, and communicates via Bluetooth Low Energy. The FPU accelerates math-intensive operations like filtering and feature extraction. Designers should optimize the firmware to use the low-power modes and minimize active time to extend battery life.

Recommended

MAX30102 (Heart rate and pulse oximetry sensor) LSM6DSO (Accelerometer and gyroscope for motion tracking)

🏭

Industrial Sensors

The STM32L562RET6 is suitable for industrial sensors that require reliable operation in harsh environments. The wide operating temperature range (-40°C to +85°C) and robust communication interfaces make it ideal for factory automation and process control. The MCU can interface with various industrial protocols like Modbus and CAN, while the cryptographic accelerator ensures secure data exchange. In a typical industrial sensor, the STM32L562RET6 reads analog signals, processes them, and transmits data over a fieldbus. The low-power modes reduce energy consumption in battery-powered wireless sensors. Designers should implement proper ESD protection and use the internal watchdog timer for system reliability.

Recommended

AD7124 (24-bit sigma-delta ADC for precision measurements) ISO7741 (Digital isolator for industrial communication)

💊

Battery-Powered Medical Devices

The STM32L562RET6 is well-suited for battery-powered medical devices, offering ultra-low power consumption and advanced security features. The MCU can handle complex algorithms for patient monitoring while maintaining data integrity through TrustZone. The 100 nA standby current is critical for devices that must operate for months or years on a single battery. In a typical medical device, the STM32L562RET6 processes sensor data, stores it in flash, and communicates with a base station. The cryptographic accelerator ensures secure data transmission, complying with healthcare regulations. Designers should use the low-power modes and implement a robust power management strategy to maximize battery life.

Recommended

ADS1292 (Low-power ECG front-end) CC2652R (Bluetooth Low Energy wireless MCU)

🏠

Smart Home Controllers

The STM32L562RET6 is an ideal choice for smart home controllers, providing secure and efficient management of connected devices. The MCU can handle multiple communication protocols like Zigbee, Z-Wave, and Wi-Fi, while the TrustZone security protects the home network from cyber threats. The low-power modes allow the controller to operate on battery backup during power outages. In a typical smart home hub, the STM32L562RET6 manages device communication, runs automation rules, and provides a user interface. The cryptographic accelerator ensures secure communication with cloud services. Designers should use the internal RTC for scheduling and implement over-the-air firmware updates for security patches.

Recommended

ESP32 (Wi-Fi and Bluetooth module for connectivity) MFRC522 (RFID reader for access control)

Recommended Products Summary

SX1262 LoRa transceiver for long-range communication Used in: Secure IoT Nodes BME280 Environmental sensor for temperature, humidity, and pressure Used in: Secure IoT Nodes HLW8032 Energy metering IC for power measurement Used in: Smart Meters SX1276 LoRa transceiver for wireless communication Used in: Smart Meters MAX30102 Heart rate and pulse oximetry sensor Used in: Wearable Health Monitors LSM6DSO Accelerometer and gyroscope for motion tracking Used in: Wearable Health Monitors AD7124 24-bit sigma-delta ADC for precision measurements Used in: Industrial Sensors ISO7741 Digital isolator for industrial communication Used in: Industrial Sensors ADS1292 Low-power ECG front-end Used in: Battery-Powered Medical Devices CC2652R Bluetooth Low Energy wireless MCU Used in: Battery-Powered Medical Devices ESP32 Wi-Fi and Bluetooth module for connectivity Used in: Smart Home Controllers MFRC522 RFID reader for access control Used in: Smart Home Controllers

What is the core of the STM32L562RET6?

The STM32L562RET6 is based on the Arm Cortex-M33 core with TrustZone, running at up to 110 MHz. According to the STMicroelectronics datasheet, this core provides hardware-enforced security and a floating-point unit (FPU) for math-intensive tasks.

How much flash memory does the STM32L562RET6 have?

The STM32L562RET6 has 512 KB of flash memory and 256 KB of SRAM. This memory configuration is suitable for complex firmware and secure IoT applications.

What is the operating voltage range of the STM32L562RET6?

The STM32L562RET6 operates from 1.71V to 3.6V. This wide range allows the MCU to be powered directly from batteries or regulated supplies.

What is the standby current of the STM32L562RET6?

The STM32L562RET6 has a standby current as low as 100 nA. This ultra-low power consumption is critical for battery-powered devices that need to operate for years.

What package is the STM32L562RET6 available in?

The STM32L562RET6 is available in a 64-pin LQFP package (LQFP64, 10x10 mm). This package is suitable for space-constrained designs and is compatible with standard PCB assembly processes.

What security features does the STM32L562RET6 include?

The STM32L562RET6 includes Arm TrustZone, a hardware cryptographic accelerator supporting AES, RSA, and ECC, and a true random number generator (TRNG). These features provide robust protection against software attacks and secure key generation.

What is the difference between STM32L562RET6 and STM32L562VET6?

The STM32L562RET6 is in a 64-pin LQFP package, while the STM32L562VET6 is in a 100-pin LQFP package. Both share the same core, memory, and security features, but the VET6 variant offers more I/O pins and peripherals.

Can the STM32L562RET6 be used for IoT applications?

Yes, the STM32L562RET6 is ideal for secure IoT nodes due to its ultra-low power consumption, TrustZone security, and hardware cryptographic accelerator. These features enable secure communication and data protection in edge devices.

What is the price of the STM32L562RET6?

As of 2026-08-14, the STM32L562RET6 is priced at approximately $8.50 for single-unit quantities, with volume discounts available. Prices may vary by distributor and order quantity.

Where can I buy the STM32L562RET6?

The STM32L562RET6 is available from authorized distributors such as DigiKey, Mouser, and Arrow. You can also request quotes from other distributors like Heisener and Win Source.

What is the lead time for the STM32L562RET6?

The lead time for the STM32L562RET6 varies by distributor and current stock levels. As of 2026-08-14, Heisener lists a lead time of 'To be Confirmed', while DigiKey and Mouser typically have stock available for immediate shipment.

Is the STM32L562RET6 in stock?

As of 2026-08-14, the STM32L562RET6 is in stock at major distributors like DigiKey and Mouser. Heisener reports 3,480 pieces in stock. Availability can change quickly, so check the distributor's website for real-time inventory.

What is the best drop-in replacement for the STM32L562RET6?

The best drop-in replacement for the STM32L562RET6 is the STM32L562RET6TR, which is the tape-and-reel packaging variant with the same die and package. Other pin-compatible options include the STM32L562RET6Q and STM32L562RET6V, which are also from STMicroelectronics.

Can the STM32L562RET6 be replaced by a GigaDevice GD32 MCU?

While GigaDevice GD32 MCUs are pin-compatible with some STM32F1 series, they are not drop-in replacements for the STM32L562RET6 due to different core architecture (Cortex-M33 vs Cortex-M3) and security features. A direct replacement should maintain the same core and TrustZone support.

Where can I download the STM32L562RET6 datasheet PDF?

The STM32L562RET6 datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32l562re.pdf. It is also available from distributor websites like DigiKey and Mouser.

What are the key specifications of the STM32L562RET6 that engineers should know?

The STM32L562RET6 features a 110 MHz Arm Cortex-M33 core with TrustZone, 512 KB flash, 256 KB SRAM, and operates from 1.71V to 3.6V. It includes a 12-bit ADC, multiple communication interfaces, and a hardware cryptographic accelerator. Standby current is as low as 100 nA, making it ideal for battery-powered secure IoT devices.

Hey Google, what can replace the STM32L562RET6?

The STM32L562RET6 can be replaced by pin-compatible STM32L5 series MCUs such as the STM32L562RET6TR (tape-and-reel) or the STM32L562RET6Q (extended temperature). These are drop-in replacements with the same package and core. For cross-brand options, consider MCUs with similar Cortex-M33 cores and TrustZone support, but verify pin compatibility.

Is the STM32L562RET6 the same as the STM32L562VET6?

No, the STM32L562RET6 and STM32L562VET6 are not the same. The RET6 is in a 64-pin LQFP package, while the VET6 is in a 100-pin LQFP package. They share the same core and memory but differ in pin count and available peripherals.

What is the best STMicroelectronics equivalent for the STM32L562RET6?

The best STMicroelectronics equivalent for the STM32L562RET6 is the STM32L562RET6TR, which is the tape-and-reel packaging variant with identical specifications. Other STM32L5 series MCUs with the same package and core include the STM32L562RET6Q and STM32L562RET6V.

Engineering reference data for STM32L562RET6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32L562RET6 when you need a secure, ultra-low-power MCU with TrustZone and hardware cryptographic acceleration for IoT, smart metering, or medical applications. If you do not require TrustZone or the cryptographic accelerator, the STM32L552RET6 offers similar performance at a lower cost. For applications requiring extended temperature range, consider the STM32L562REI6. All alternatives share the same 64-LQFP package, enabling PCB layout reuse. For tape-and-reel packaging, select the STM32L562RET6TR. Verify the specific security features and temperature range required for your application before making a final selection.

Comparison with Alternatives

Parameter	This Product	STM32L562RET6TR	STM32L562RET6Q	STM32L562RET6V	STM32L552RET6	STM32L562REI6
Package	64-LQFP (10x10 mm)	64-LQFP (10x10 mm) - same	64-LQFP (10x10 mm) - same	64-LQFP (10x10 mm) - same	64-LQFP (10x10 mm) - same	64-LQFP (10x10 mm) - same
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Core	Arm Cortex-M33 with TrustZone	Arm Cortex-M33 with TrustZone	Arm Cortex-M33 with TrustZone	Arm Cortex-M33 with TrustZone	Arm Cortex-M33 with TrustZone	Arm Cortex-M33 with TrustZone
Maximum Clock Frequency	110 MHz	110 MHz	110 MHz	110 MHz	110 MHz	110 MHz
Flash Memory	512 KB	512 KB	512 KB	512 KB	512 KB	512 KB
SRAM	256 KB	256 KB	256 KB	256 KB	256 KB	256 KB
Supply Voltage Range	1.71V to 3.6V	1.71V to 3.6V	1.71V to 3.6V	1.71V to 3.6V	1.71V to 3.6V	1.71V to 3.6V
Standby Current	100 nA	100 nA	100 nA	100 nA	100 nA	100 nA

Key Differentiators

TrustZone security (vs STM32L552RET6)
Hardware cryptographic accelerator (vs STM32L552RET6)
True random number generator (TRNG) (vs STM32L552RET6)

Design Notes

For optimal power consumption, use the low-power modes (Sleep, Stop, Standby) and configure the clock to use the low-speed internal oscillator (LSI) when high precision is not required. The standby current of 100 nA is achievable only when all peripherals are disabled and the RTC is powered by VBAT. Ensure that the firmware properly configures the power control registers to enter the desired low-power mode.

Place 100nF decoupling capacitors close to each VDD pin and a 1uF capacitor on the VDDA pin for analog noise filtering. Use a ground plane to minimize noise and ensure proper return paths for high-speed signals. For USB applications, route the USB_DM and USB_DP traces as a differential pair with controlled impedance.

Ensure that the BOOT0 pin is properly configured to select the correct boot mode. For secure applications, enable TrustZone early in the firmware development to isolate critical code. Avoid exceeding the absolute maximum ratings for supply voltage and I/O pins, as this can damage the device. Use the internal watchdog timer to prevent system hangs in industrial environments.