Overview
The STM32L452REY6TR is an ultra-low-power microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core. This MCU operates at a frequency of up to 80 MHz and features a Floating Point Unit (FPU) that supports all Arm® single-precision data-processing instructions and data types. It also includes a full set of DSP instructions and a Memory Protection Unit (MPU) to enhance application security.
The device is part of the STM32L452xx family, known for its ultra-low-power consumption and extensive range of peripherals and interfaces. It is designed to support a wide range of applications requiring low power consumption and high performance.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Flash Memory | Up to 512 KB single bank, proprietary code readout protection |
| SRAM | 160 KB, including 32 KB with hardware parity check |
| Power Supply | 1.71 V to 3.6 V, external SMPS support |
| Temperature Range | -40 °C to 85/125 °C |
| Low Power Modes | VBAT mode: 145 nA, Shutdown mode: 22 nA, Standby mode: 106 nA, Stop 2 mode: 2.05 µA (with RTC: 2.40 µA) |
| Timers | 1x 32-bit, 5x 16-bit (including 1 advanced motor-control), 2x low-power 16-bit timers |
| Analog Peripherals | 1x 12-bit ADC (5 Msps), 1x 12-bit DAC, 1x operational amplifier, 2x ultra-low-power comparators |
| Communication Interfaces | USB 2.0 full-speed, 1x SAI, 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, CAN 2.0B |
| Capacitive Sensing Channels | Up to 21 channels |
| Package | WLCSP 64 3.4x3.7x0.6 P 0.4 mm |
Key Features
- Ultra-low-power with FlexPowerControl, including multiple low power modes (VBAT, Shutdown, Standby, Stop 2)
- High-performance Arm® Cortex®-M4 core with FPU and DSP instructions
- Extensive range of peripherals: timers, analog peripherals (ADC, DAC, operational amplifier, comparators), and communication interfaces (USB, SAI, I2C, SPI, USART, UART, LPUART, CAN)
- Up to 21 capacitive sensing channels supporting touchkey, linear, and rotary touch sensors
- Independent power supplies for analog peripherals and RTC backup
- Interconnect matrix and brown out reset (BOR)
- Quad SPI memory interface and support for external SMPS
Applications
- IoT devices requiring low power consumption and high performance
- Industrial automation and control systems
- Medical devices and healthcare applications
- Consumer electronics with touch sensing capabilities
- Automotive systems, especially those requiring low power and high reliability
- Smart home and building automation
Q & A
- What is the core architecture of the STM32L452REY6TR?
The core is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU) and supports DSP instructions.
- What is the maximum frequency of the STM32L452REY6TR?
The maximum frequency is up to 80 MHz.
- What are the power supply ranges for the STM32L452REY6TR?
The device operates from 1.71 V to 3.6 V and supports external SMPS.
- What are the low power modes available on the STM32L452REY6TR?
The device features VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode, among others.
- What types of timers are available on the STM32L452REY6TR?
The device includes 1x 32-bit timer, 5x 16-bit timers (including 1 advanced motor-control), and 2x low-power 16-bit timers.
- What analog peripherals are included in the STM32L452REY6TR?
The device features a 12-bit ADC, a 12-bit DAC, an operational amplifier, and two ultra-low-power comparators.
- What communication interfaces are available on the STM32L452REY6TR?
The device includes USB 2.0 full-speed, SAI, I2C, SPI, USART, UART, LPUART, and CAN 2.0B interfaces.
- How many capacitive sensing channels does the STM32L452REY6TR support?
The device supports up to 21 capacitive sensing channels.
- What is the package type for the STM32L452REY6TR?
The package type is WLCSP 64 3.4x3.7x0.6 P 0.4 mm.
- What is the temperature range for the STM32L452REY6TR?
The device operates in the -40 °C to 85/125 °C temperature range.
- Does the STM32L452REY6TR support external power supplies for analog peripherals?
Yes, it supports independent power supplies for analog peripherals and RTC backup.
