Overview
The STM32L462CEU6TR 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 STM32L462CEU6TR is designed for low-power applications, offering various power-saving modes such as VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode. It supports a wide temperature range from -40 °C to 85/125 °C and operates from a 1.71 to 3.6 V power supply.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memories | 512 KB single bank Flash, 160 KB of SRAM (including 32 KB with hardware parity check) |
| Power Supply | 1.71 V to 3.6 V |
| Temperature Range | -40 °C to 85/125 °C |
| Power Modes | VBAT mode: 145 nA, Shutdown mode: 22 nA, Standby mode: 106 nA, Stop 2 mode: 2.05 µA (2.40 µA with RTC) |
| Timers | 1x 32-bit, 5x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers |
| Analog Peripherals | 1x 12-bit ADC 5 Msps, 1x 12-bit DAC output channels, 1x operational amplifier, 2x ultra-low-power comparators |
| Communication Interfaces | USB 2.0 full-speed, 1x SAI, 4x I2C, 3x SPI, 3x USART, 1x UART, 1x LPUART, CAN 2.0B |
| Security | AES 128/256-bit key encryption hardware accelerator |
| Package | UFQFPN 48 7x7x0.55 mm |
Key Features
- Ultra-low-power with FlexPowerControl and multiple power-saving modes
- 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 including 12-bit ADC, 12-bit DAC, operational amplifier, and ultra-low-power comparators
- Extensive communication interfaces: USB 2.0, SAI, I2C, SPI, USART, UART, LPUART, and CAN 2.0B
- AES 128/256-bit key encryption hardware accelerator for enhanced security
- Up to 21 capacitive sensing channels supporting touchkey, linear, and rotary touch sensors
- RTC with hardware calendar, alarms, and calibration
- Multiple timers: 1x 32-bit, 5x 16-bit general purpose, 2x 16-bit basic, and 2x low-power 16-bit timers
Applications
- Low-power IoT devices and smart sensors
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Automotive systems, especially those needing high reliability and low power
- Consumer electronics such as wearables and portable devices
- Smart home and building automation systems
Q & A
- What is the core architecture of the STM32L462CEU6TR?
The STM32L462CEU6TR is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L462CEU6TR?
The maximum operating frequency is up to 80 MHz.
- What are the power supply and temperature ranges for the STM32L462CEU6TR?
The device operates from a 1.71 to 3.6 V power supply and supports a temperature range from -40 °C to 85/125 °C.
- What are the key power-saving modes of the STM32L462CEU6TR?
The device features VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode for low-power operation.
- What types of memories are available on the STM32L462CEU6TR?
The device includes 512 KB single bank Flash and 160 KB of SRAM, along with a Quad SPI memory interface.
- What analog peripherals are included in the STM32L462CEU6TR?
The device features a 12-bit ADC, a 12-bit DAC, an operational amplifier, and two ultra-low-power comparators.
- What communication interfaces are available on the STM32L462CEU6TR?
The device includes USB 2.0 full-speed, SAI, I2C, SPI, USART, UART, LPUART, and CAN 2.0B interfaces.
- Does the STM32L462CEU6TR have any security features?
Yes, it includes an AES 128/256-bit key encryption hardware accelerator for enhanced security.
- What is the package type for the STM32L462CEU6TR?
The device is available in a UFQFPN 48 7x7x0.55 mm package.
- What are some typical applications for the STM32L462CEU6TR?
Typical applications include low-power IoT devices, industrial automation, medical devices, automotive systems, consumer electronics, and smart home systems.
- How many capacitive sensing channels does the STM32L462CEU6TR support?
The device supports up to 21 capacitive sensing channels.
