Overview
The STM32L412CBT6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L4 series. It is based on the high-performance Arm® Cortex®-M4 32-bit RISC core, operating at a frequency of up to 80 MHz. The Cortex-M4 core includes a Floating Point Unit (FPU) that supports all Arm® single-precision data-processing instructions and data types, along with a full set of DSP instructions and a Memory Protection Unit (MPU) for enhanced application security.
This microcontroller is designed for low-power applications, featuring advanced power-saving modes such as VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode. It also includes a comprehensive set of peripherals and interfaces, making it suitable for a wide range of applications requiring high performance and low power consumption.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memory | 128 KB flash, 40 KB SRAM |
| Power Supply | 1.71 V to 3.6 V (internal LDO), 1.00 to 1.32 V (external SMPS) |
| Temperature Range | -40 °C to 85 °C / 125 °C |
| ADC | 2x 12-bit ADC, 5 Msps |
| Timers | 1x 32-bit, 4x 16-bit general purpose, 2x low-power 16-bit timers |
| Communication Interfaces | 3x I2C, 2x SPI, 3x USART, 1x Low-Power UART, 1x USB full-speed device |
| Package | 48-pin LQFP |
| Power Modes | VBAT mode: 300 nA, Shutdown mode: 16 nA, Standby mode: 32 nA, Stop 2 mode: 0.7 µA |
Key Features
- Ultra-low-power with FlexPowerControl
- Includes ST state-of-the-art patented technology
- Adaptive real-time accelerator (ART Accelerator™) for 0-wait-state execution from flash memory
- Memory protection unit (MPU) for enhanced security
- Rich analog peripherals: 2x 12-bit ADC, 1x operational amplifier, 1x ultra-low-power comparator
- Up to 12 capacitive sensing channels
- Batch acquisition mode (BAM) and 4 µs wakeup from Stop mode
- Brown out reset (BOR) and interconnect matrix
- True random number generator, CRC calculation unit, and 96-bit unique ID
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
The STM32L412CBT6 is suitable for a variety of applications that require high performance and low power consumption, such as:
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Consumer electronics and IoT devices
- Automotive systems, including EV vehicles
- Smart home and building automation
Q & A
- What is the core architecture of the STM32L412CBT6?
The STM32L412CBT6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L412CBT6?
The maximum operating frequency is up to 80 MHz.
- What are the power supply ranges for the STM32L412CBT6?
The power supply ranges are 1.71 V to 3.6 V (internal LDO) and 1.00 to 1.32 V (external SMPS).
- What are the key power-saving modes of the STM32L412CBT6?
The key power-saving modes include VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode.
- What types of timers are available on the STM32L412CBT6?
The microcontroller features 1x 32-bit timer, 4x 16-bit general purpose timers, and 2x low-power 16-bit timers.
- What communication interfaces are supported by the STM32L412CBT6?
The microcontroller supports 3x I2C, 2x SPI, 3x USART, 1x Low-Power UART, and 1x USB full-speed device.
- What is the package type of the STM32L412CBT6?
The package type is 48-pin LQFP.
- Does the STM32L412CBT6 support capacitive sensing?
Yes, it supports up to 12 capacitive sensing channels.
- What are the temperature ranges for the STM32L412CBT6?
The temperature ranges are -40 °C to 85 °C / 125 °C.
- Does the STM32L412CBT6 have any specific features for automotive applications?
Yes, it is designed to meet the enhanced digital control and high-performance analog requirements for EV vehicles.
