Overview
The STM32L462CEU6 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 designed for low-power applications, offering various power-saving modes and a wide range of peripherals and interfaces. It is suitable for applications requiring high performance, low power consumption, and advanced analog and digital capabilities.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU |
| Frequency | 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 |
| Low Power Modes | 145 nA in VBAT mode, 22 nA Shutdown mode, 106 nA Standby mode, 375 nA Standby mode with RTC, 2.05 µA Stop 2 mode, 2.40 µA with RTC |
| 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 |
| Operational Amplifier | 1x operational amplifier with built-in PGA |
| Comparators | 2x ultra-low-power comparators |
| Communication Interfaces | USB 2.0 full-speed, 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, CAN 2.0B, SDMMC |
| Package | UFQFPN 48 7x7x0.55 mm |
Key Features
- Ultra-low-power with FlexPowerControl and various low-power modes (VBAT, Shutdown, Standby, Stop 2)
- Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™), and DSP instructions
- High-speed memories: 512 KB Flash, 160 KB SRAM, and Quad SPI memory interface
- Rich analog peripherals: 12-bit ADC, 12-bit DAC, operational amplifier, and ultra-low-power comparators
- AES hardware accelerator for 128/256-bit key encryption
- Extensive range of communication interfaces: USB, I2C, SPI, USART, UART, LPUART, CAN, SDMMC
- Up to 21 capacitive sensing channels and support for touchkey, linear, and rotary touch sensors
- Internal voltage reference buffer, low-power RTC, and multiple timers (including 16-bit and 32-bit timers)
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
- Industrial automation and control systems
- Automotive applications, especially in electric vehicles (EVs)
- Medical devices requiring low power and high performance
- Consumer electronics with advanced analog and digital requirements
- IoT devices and smart home applications
- Energy-efficient and sustainable technology projects
Q & A
- What is the core architecture of the STM32L462CEU6?
The STM32L462CEU6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L462CEU6?
The maximum operating frequency is up to 80 MHz.
- What are the power supply and temperature ranges for the STM32L462CEU6?
The power supply range is 1.71 V to 3.6 V, and the temperature range is -40 °C to 85/125 °C.
- What are the key low-power modes of the STM32L462CEU6?
The device features VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode, among others, with very low current consumption.
- What analog peripherals are available on the STM32L462CEU6?
The device includes a 12-bit ADC, a 12-bit DAC, an operational amplifier, and ultra-low-power comparators.
- What communication interfaces does the STM32L462CEU6 support?
The device supports USB 2.0 full-speed, I2C, SPI, USART, UART, LPUART, CAN 2.0B, and SDMMC interfaces.
- Does the STM32L462CEU6 have any security features?
Yes, it includes an AES hardware accelerator for 128/256-bit key encryption and a Memory Protection Unit (MPU).
- What is the package type for the STM32L462CEU6?
The package type is UFQFPN 48 7x7x0.55 mm.
- What development tools are available for the STM32L462CEU6?
Development support includes serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- What are some typical applications for the STM32L462CEU6?
Typical applications include industrial automation, automotive systems, medical devices, consumer electronics, and IoT devices.
- Is the STM32L462CEU6 compliant with any environmental standards?
Yes, it is ECOPACK2 compliant, indicating it meets certain environmental and sustainability standards.
