Overview
The STM32L452VET6 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 and high performance.
Key Specifications
| Parameter | Value |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU |
| Frequency | Up to 80 MHz |
| Flash Memory | Up to 512 KB |
| SRAM | 160 KB (including 32 KB with hardware parity check) |
| Power Supply | 1.71 V to 3.6 V (internal LDO), 1.05 to 1.32 V (external SMPS) |
| Temperature Range | -40 °C to +85 °C (+105 °C junction), -40 °C to +125 °C (+130 °C junction) |
| ADC | 12-bit, 5 Msps |
| DAC | 1x 12-bit output channel |
| Timers | 1x 32-bit, 5x 16-bit (including 1 advanced motor-control and 2 low-power timers) |
| Communication Interfaces | 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, 1x SAI, 1x SDMMC, 1x CAN (2.0B Active) |
| Package | LQFP 100 (14x14x1.4 mm) |
| I/Os | Up to 83 fast I/Os, most 5 V-tolerant |
Key Features
- Ultra-low-power with FlexPowerControl
- Batch acquisition mode (BAM) and fast wakeup from Stop mode (4 µs)
- Low-power modes: VBAT mode (145 nA), Shutdown mode (22 nA), Standby mode (106 nA), Stop 2 mode (2.05 µA), and Run mode (84 µA/MHz in LDO Mode, 36 μA/MHz in SMPS Mode)
- Quad SPI Flash memories interface
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, operational amplifier, and ultra-low-power comparators
- Advanced communication interfaces: USB 2.0 full-speed, SAI, SDMMC, CAN (2.0B Active)
- Capacitive sensing channels: up to 21 channels for touchkey, linear, and rotary touch sensors
- Internal voltage reference buffer and low-power RTC
- True random number generator, CRC calculation unit, and 96-bit unique ID
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
The STM32L452VET6 is suitable for a wide range of applications that require low power consumption and high performance. These include:
- Automotive systems
- Industrial control and automation
- Medical devices
- Consumer electronics requiring low power
- IoT devices and smart home applications
- Wearable devices and fitness trackers
Q & A
- What is the core architecture of the STM32L452VET6?
The STM32L452VET6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L452VET6?
The maximum operating frequency is up to 80 MHz.
- What are the power supply ranges for the STM32L452VET6?
The device operates from 1.71 V to 3.6 V using the internal LDO regulator and from 1.05 to 1.32 V using an external SMPS supply.
- What are the key low-power modes of the STM32L452VET6?
The device features VBAT mode (145 nA), Shutdown mode (22 nA), Standby mode (106 nA), and Stop 2 mode (2.05 µA).
- What types of communication interfaces does the STM32L452VET6 support?
The device supports USB 2.0 full-speed, SAI, SDMMC, CAN (2.0B Active), I2C, SPI, USART, and UART interfaces.
- What is the temperature range for the STM32L452VET6?
The device operates in the -40 °C to +85 °C (+105 °C junction) and -40 °C to +125 °C (+130 °C junction) temperature ranges.
- What are the memory specifications of the STM32L452VET6?
The device has up to 512 KB of Flash memory and 160 KB of SRAM.
- Does the STM32L452VET6 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- What development tools are available for the STM32L452VET6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™ for development.
- Is the STM32L452VET6 RoHS compliant?
Yes, the device is ECOPACK2® compliant and RoHS compliant.
- What package options are available for the STM32L452VET6?
The device is available in LQFP 100 (14x14x1.4 mm) and UFBGA 100 packages.
