Overview
The STM32L452REI6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L452xx family. It is based on the high-performance Arm® Cortex®-M4 32-bit RISC core, operating at a frequency of up to 80 MHz. This microcontroller features a Floating Point Unit (FPU) that supports all Arm® single-precision data-processing instructions and includes a full set of DSP instructions and a Memory Protection Unit (MPU) for enhanced application security.
Key Specifications
| Parameter | Specification |
|---|---|
| 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 |
| Temperature Range | -40 °C to 85/125 °C |
| Package | UFBGA 64 5x5x0.6 P 0.5 mm |
| Timers | 1x 32-bit, 5x 16-bit general purpose, 2x 16-bit low-power timers |
| ADC | 1x 12-bit, 5 Msps |
| DAC | 1x 12-bit output channel |
| Communication Interfaces | USB 2.0 full-speed, 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, 1x CAN, 1x SDMMC |
| Capacitive Sensing Channels | Up to 21 channels |
Key Features
- Ultra-low-power with FlexPowerControl
- Low power modes: VBAT mode, Shutdown mode, Standby mode, Stop 2 mode
- High-speed memories: Flash and SRAM with protection mechanisms
- Quad SPI Flash memories interface
- Rich analog peripherals: ADC, DAC, operational amplifier, comparators
- Extensive communication interfaces: USB, I2C, SPI, USART, UART, CAN, SDMMC
- Up to 21 capacitive sensing channels
- Internal voltage reference buffer and low-power RTC
- Development support: SWD, JTAG, Embedded Trace Macrocell™
Applications
The STM32L452REI6 is suitable for a wide range of applications that require low power consumption and high performance. These include:
- IoT devices and smart sensors
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Consumer electronics and wearable devices
- Automotive systems and telematics
Q & A
- What is the core architecture of the STM32L452REI6?
The STM32L452REI6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU). - What is the maximum operating frequency of the STM32L452REI6?
The maximum operating frequency is up to 80 MHz. - What are the power supply voltage ranges for the STM32L452REI6?
The power supply voltage ranges from 1.71 V to 3.6 V. - What are the key low power modes of the STM32L452REI6?
The key low power modes include VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode. - What types of memory does the STM32L452REI6 have?
The STM32L452REI6 has up to 512 KB of Flash memory and 160 KB of SRAM. - What communication interfaces are available on the STM32L452REI6?
The available communication interfaces include USB 2.0 full-speed, I2C, SPI, USART, UART, LPUART, CAN, and SDMMC. - Does the STM32L452REI6 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels. - What is the temperature range for the STM32L452REI6?
The temperature range is -40 °C to 85/125 °C. - What package options are available for the STM32L452REI6?
The STM32L452REI6 is available in a UFBGA 64 5x5x0.6 P 0.5 mm package. - Does the STM32L452REI6 have any specific development support features?
Yes, it supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
