Overview
The STM32L462REI6 is an ultra-low-power microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core. This device 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 STM32L462REI6 is designed for low-power applications, offering a comprehensive set of power-saving modes. It includes high-speed memories such as 512 KB of Flash memory and 160 KB of SRAM, along with a Quad SPI Flash memory interface. The device supports various communication interfaces, including USB, I2C, SPI, USART, and CAN, making it versatile for a wide range of applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Flash Memory | 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 |
| Temperature Range | -40 °C to 85/125 °C |
| ADC Resolution | 12-bit, up to 5 Msps |
| DAC Channels | 1x 12-bit |
| Timers | 1x 32-bit, 5x 16-bit, 2x low-power 16-bit timers |
| Communication Interfaces | USB 2.0 full-speed, 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, 1x CAN, 1x SDMMC |
| Package Options | UFBGA 64, LQFP 64, WLCSP 64 |
Key Features
- Ultra-low-power with FlexPowerControl
- High-performance Arm® Cortex®-M4 CPU with FPU and DSP instructions
- Comprehensive set of power-saving modes (e.g., VBAT mode, Shutdown mode, Standby mode, Stop 2 mode)
- Rich analog peripherals including 12-bit ADC, 12-bit DAC, operational amplifier, and comparators
- AES hardware accelerator for 128/256-bit key encryption
- Up to 21 capacitive sensing channels
- Internal voltage reference buffer and low-power RTC
- Advanced communication interfaces including USB, I2C, SPI, USART, UART, LPUART, CAN, and SDMMC
- ECOPACK2 compliant packages
Applications
The STM32L462REI6 is suitable for a variety of low-power applications, including:
- IoT devices and smart sensors
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Consumer electronics requiring low power consumption
- Automotive systems and telematics
Q & A
- What is the core architecture of the STM32L462REI6?
The STM32L462REI6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum clock frequency of the STM32L462REI6?
The maximum clock frequency is up to 80 MHz.
- How much Flash and SRAM memory does the STM32L462REI6 have?
The device has 512 KB of Flash memory and 160 KB of SRAM.
- What are the power-saving modes available on the STM32L462REI6?
The device offers several power-saving modes including VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode.
- What communication interfaces are supported by the STM32L462REI6?
The device supports USB 2.0 full-speed, I2C, SPI, USART, UART, LPUART, CAN, and SDMMC interfaces.
- Does the STM32L462REI6 have any cryptographic features?
Yes, it includes an AES hardware accelerator for 128/256-bit key encryption.
- What is the temperature range for the STM32L462REI6?
The device operates in the -40 °C to 85/125 °C temperature range.
- What types of timers are available on the STM32L462REI6?
The device includes 1x 32-bit timer, 5x 16-bit timers, and 2x low-power 16-bit timers.
- Does the STM32L462REI6 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels.
- Is the STM32L462REI6 RoHS compliant?
Yes, the device is RoHS compliant and ECOPACK2 certified.
