Overview
The STM32L462VEI6 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 microcontroller is designed for low-power applications, with a power supply range of 1.71 to 3.6 V and an operating temperature range of -40 to +85 °C (or +125 °C junction temperature). It includes high-speed memories such as up to 512 Kbyte of Flash memory and 160 Kbyte of SRAM, along with a Quad SPI Flash memories interface.
The STM32L462VEI6 offers a comprehensive set of peripherals and interfaces, including analog peripherals, communication interfaces, and power-saving modes, making it suitable for a wide range of applications.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memory | 512 KB single bank Flash, 160 KB SRAM (including 32 KB with hardware parity check) |
| Power Supply | 1.71 to 3.6 V |
| Temperature Range | -40 to +85 °C (or +125 °C junction temperature) |
| ADC | 1x 12-bit ADC, 5 Msps, up to 16-bit with hardware oversampling |
| DAC | 1x 12-bit DAC output channels, low-power sample and hold |
| Timers | 1x 16-bit advanced motor-control, 1x 32-bit, 3x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers |
| Communication Interfaces | USB 2.0 full-speed, 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, CAN (2.0B Active), SDMMC |
| Power Modes | VBAT mode: 145 nA, Shutdown mode: 22 nA, Standby mode: 106 nA, Stop 2 mode: 2.05 µA, Run mode: 84 µA/MHz |
| Package | UFBGA 100 7x7x0.6 P 0.5 mm |
Key Features
- Ultra-low-power with FlexPowerControl
- Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™), and DSP instructions
- High-speed memories: up to 512 Kbyte Flash, 160 Kbyte SRAM, Quad SPI Flash memories interface
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, operational amplifier, ultra-low-power comparators
- Comprehensive set of communication interfaces: USB, I2C, SPI, USART, UART, LPUART, CAN, SDMMC
- Advanced power-saving modes: VBAT mode, Shutdown mode, Standby mode, Stop 2 mode
- Up to 21 capacitive sensing channels for touchkey, linear, and rotary touch sensors
- AES hardware accelerator for 128/256-bit key encryption
- Internal multispeed oscillators and PLLs for system clock, audio, and ADC
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
The STM32L462VEI6 is suitable for a variety of low-power applications, including:
- IoT devices and smart home appliances
- Wearable electronics and health monitoring devices
- Industrial automation and control systems
- Automotive systems requiring low power consumption
- Consumer electronics such as smart meters and energy management systems
Q & A
- What is the core architecture of the STM32L462VEI6?
The STM32L462VEI6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the power supply range for the STM32L462VEI6?
The power supply range is from 1.71 to 3.6 V.
- What are the key power-saving modes of the STM32L462VEI6?
The device features VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode, among others.
- What types of communication interfaces are available on the STM32L462VEI6?
The device includes USB 2.0 full-speed, I2C, SPI, USART, UART, LPUART, CAN (2.0B Active), and SDMMC interfaces.
- What is the maximum frequency of the Cortex-M4 core?
The Cortex-M4 core operates at a frequency of up to 80 MHz.
- What is the memory configuration of the STM32L462VEI6?
The device has up to 512 Kbyte of Flash memory and 160 Kbyte of SRAM.
- Does the STM32L462VEI6 support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- What security features are included in the STM32L462VEI6?
The device includes an AES hardware accelerator for 128/256-bit key encryption and various memory protection mechanisms.
- What are the available packages for the STM32L462VEI6?
The device is available in several packages, including UFBGA 100 and LQFP 100.
- Does the STM32L462VEI6 support real-time clock (RTC) functionality?
Yes, it includes an RTC with hardware calendar, alarms, and calibration.
- What development tools are supported for the STM32L462VEI6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
