Overview
The STM32L412RBT6 is a microcontroller from STMicroelectronics, part of the STM32L412xx family. It is an ultra-low-power device based on the Arm Cortex-M4 CPU with a floating-point unit (FPU), operating at frequencies up to 80 MHz. This MCU is designed for low-power applications and features advanced power-saving modes, including shutdown, standby, and stop modes, making it suitable for battery-powered devices and energy-efficient systems.
Key Specifications
| Parameter | Value |
|---|---|
| Core | Arm 32-bit Cortex-M4 CPU with FPU |
| Frequency | Up to 80 MHz |
| Flash Memory | 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 |
| ADC | 2x 12-bit, 5 Msps |
| Timers | 1x 32-bit, 4x 16-bit general purpose, 2x 16-bit low-power, 1x 16-bit advanced motor control |
| Communication Interfaces | 3x I2C, 2x SPI, 3x USART, 1x LPUART, 1x USB 2.0 full-speed |
| Package | 64-pin LQFP |
Key Features
- Ultra-low-power consumption with FlexPowerControl, including shutdown, standby, and stop modes.
- Advanced analog peripherals: 2x 12-bit ADCs, 1x operational amplifier, 1x ultra-low-power comparator.
- Rich communication interfaces: USB 2.0 full-speed, I2C, SPI, USART, LPUART.
- Support for capacitive sensing with up to 12 channels.
- RTC with hardware calendar, alarms, and calibration.
- True random number generator, CRC calculation unit, and 96-bit unique ID.
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell.
Applications
The STM32L412RBT6 is suitable for a wide range of low-power applications, including:
- Battery-powered devices such as wearables, smart home devices, and IoT nodes.
- Energy-efficient industrial control systems and automation.
- Medical devices requiring low power consumption.
- Automotive systems, especially those needing robust and reliable performance in varying temperatures.
- Consumer electronics that demand high performance with low energy usage.
Q & A
- What is the core architecture of the STM32L412RBT6?
The core is based on the Arm 32-bit Cortex-M4 CPU with a floating-point unit (FPU). - What is the maximum operating frequency of the STM32L412RBT6?
The maximum operating frequency is up to 80 MHz. - How much flash and SRAM memory does the STM32L412RBT6 have?
The device has 128 KB of flash memory and 40 KB of SRAM. - What are the power supply ranges for the STM32L412RBT6?
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 operating temperature ranges for the STM32L412RBT6?
The operating temperature ranges are -40 °C to +85 °C / +125 °C. - What types of timers are available on the STM32L412RBT6?
The device features 1x 32-bit timer, 4x 16-bit general-purpose timers, 2x 16-bit low-power timers, and 1x 16-bit advanced motor control timer. - Does the STM32L412RBT6 support capacitive sensing?
Yes, it supports up to 12 capacitive sensing channels. - What communication interfaces are available on the STM32L412RBT6?
The device includes USB 2.0 full-speed, I2C, SPI, USART, and LPUART interfaces. - What development tools are supported by the STM32L412RBT6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell. - Is the STM32L412RBT6 suitable for battery-powered devices?
Yes, it is designed for low-power applications and is highly suitable for battery-powered devices.
