Overview
The STM32L412RBT6P is a ultra-low-power microcontroller from STMicroelectronics, part of the STM32L4 series. It features an Arm Cortex-M4 32-bit CPU with a floating-point unit (FPU), operating at up to 80 MHz. This MCU is designed for low-power applications, leveraging ST's patented FlexPowerControl technology. It offers a comprehensive set of peripherals and interfaces, making it suitable for a wide range of applications requiring high performance and low energy consumption.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm 32-bit Cortex-M4 CPU with FPU |
| Operating Frequency | Up to 80 MHz |
| Flash Memory | Up to 128 KB |
| SRAM | 40 KB (including 8 KB with hardware parity check) |
| Power Supply | 1.71 V to 3.6 V (internal LDO), 1.00 to 1.32 V (external SMPS) |
| Operating Temperature | -40 °C to +85 °C / +125 °C |
| Package | LQFP 64 (10x10x1.4 mm) |
| ADC | 2x 12-bit ADC, 5 Msps |
| Timers | 1x 16-bit advanced motor-control, 1x 32-bit, 2x 16-bit general purpose, 1x 16-bit basic, 2x low-power 16-bit timers |
| Communication Interfaces | 3x I2C, 2x SPI, 3x USART, 1x LPUART, 1x USB 2.0 full-speed |
| Capacitive Sensing Channels | Up to 12 channels |
| I/Os | Up to 52 fast I/Os, most 5 V-tolerant |
Key Features
- Ultra-low-power with FlexPowerControl, offering various power-saving modes such as Shutdown, Standby, and Stop modes.
- High-performance Arm Cortex-M4 CPU with FPU, achieving up to 100 DMIPS.
- Rich set of analog peripherals including 2x 12-bit ADCs, 1x operational amplifier, and 1x ultra-low-power comparator.
- Comprehensive communication interfaces including USB 2.0 full-speed, I2C, SPI, and USART.
- Up to 12 capacitive sensing channels supporting touchkey, linear, and rotary touch sensors.
- Advanced motor control timers and multiple general-purpose timers.
- RTC with hardware calendar, alarms, and calibration.
- True random number generator, CRC calculation unit, and 96-bit unique ID.
Applications
- IoT devices requiring low power consumption and high performance.
- Industrial automation and control systems.
- Medical devices and healthcare equipment.
- Consumer electronics such as smart home devices and wearables.
- Automotive systems, especially those requiring advanced motor control and low power modes.
Q & A
- What is the core architecture of the STM32L412RBT6P?
The core architecture is based on the Arm 32-bit Cortex-M4 CPU with a floating-point unit (FPU).
- What is the maximum operating frequency of the STM32L412RBT6P?
The maximum operating frequency is up to 80 MHz.
- What are the power supply ranges for the STM32L412RBT6P?
The power supply ranges are 1.71 V to 3.6 V (internal LDO) and 1.00 to 1.32 V (external SMPS).
- What types of timers are available on the STM32L412RBT6P?
The MCU features 1x 16-bit advanced motor-control timer, 1x 32-bit timer, 2x 16-bit general-purpose timers, 1x 16-bit basic timer, and 2x low-power 16-bit timers.
- Does the STM32L412RBT6P support capacitive sensing?
Yes, it supports up to 12 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- What communication interfaces are available on the STM32L412RBT6P?
The MCU includes 3x I2C, 2x SPI, 3x USART, 1x LPUART, and 1x USB 2.0 full-speed interface.
- What is the operating temperature range of the STM32L412RBT6P?
The operating temperature range is -40 °C to +85 °C / +125 °C.
- Does the STM32L412RBT6P have any power-saving modes?
Yes, it features various power-saving modes including Shutdown, Standby, and Stop modes.
- What is the package type of the STM32L412RBT6P?
The package type is LQFP 64 (10x10x1.4 mm).
- Is the STM32L412RBT6P suitable for IoT applications?
Yes, it is highly suitable for IoT applications due to its ultra-low-power consumption and high performance.
