Overview
The STM32L412KBU6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L412xx family. 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.
The device features high-speed memories, including up to 128 Kbytes of flash memory and 40 Kbytes of SRAM. It also includes a Quad SPI flash memories interface and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses, and a 32-bit multi-AHB bus matrix.
The STM32L412KBU6 is designed for low-power applications, with various power-saving modes and independent power supplies for analog components. It operates in a temperature range of -40 to +85 °C (or +125 °C junction temperature) and supports a power supply range of 1.71 to 3.6 V.
Key Specifications
| Parameter | Specification |
|---|---|
| Clock Frequency | Up to 80 MHz |
| Core | Arm® Cortex®-M4 32-bit RISC core with FPU |
| Flash Memory | Up to 128 Kbytes |
| SRAM | 40 Kbytes |
| ADC | Two fast 12-bit ADCs (5 Msps) |
| Timers | One 32-bit timer, four 16-bit timers, two 16-bit low-power timers |
| Communication Interfaces | Three I2Cs, two SPIs, three USARTs, one Low-Power UART, one USB full-speed device |
| Power Supply | 1.71 to 3.6 V (internal LDO), 1.00 to 1.32 V (external SMPS) |
| Temperature Range | -40 to +85 °C (or +125 °C junction temperature) |
| Package | Available in 32 to 64-pin packages |
| Integrated Components | One operational amplifier, two comparators, low-power RTC, capacitive sensing channels |
Key Features
- Ultra-low-power with FlexPowerControl
- Includes ST state-of-the-art patented technology
- Batch acquisition mode (BAM)
- Fast wakeup from Stop mode (4 µs)
- Brown out reset (BOR)
- Interconnect matrix
- Adaptive real-time accelerator (ART Accelerator™) for 0-wait-state execution from flash memory
- Memory protection unit (MPU)
- DSP instructions and 100DMIPS performance
- Low-power modes: VBAT mode, Shutdown mode, Standby mode, Stop 2 mode
Applications
The STM32L412KBU6 is suitable for a wide range of low-power applications, including:
- IoT devices and smart sensors
- Wearable electronics and health monitoring devices
- Industrial automation and control systems
- Automotive systems requiring low power consumption
- Consumer electronics with power efficiency requirements
Q & A
- What is the core architecture of the STM32L412KBU6?
The STM32L412KBU6 is based on the Arm® Cortex®-M4 32-bit RISC core with a Floating Point Unit (FPU).
- What is the maximum clock frequency of the STM32L412KBU6?
The maximum clock frequency is up to 80 MHz.
- How much flash and SRAM memory does the STM32L412KBU6 have?
The device has up to 128 Kbytes of flash memory and 40 Kbytes of SRAM.
- What types of ADCs are available on the STM32L412KBU6?
The device features two fast 12-bit ADCs with a sampling rate of 5 Msps.
- What communication interfaces are supported by the STM32L412KBU6?
The device supports three I2Cs, two SPIs, three USARTs, one Low-Power UART, and one USB full-speed device.
- What is the power supply range for the STM32L412KBU6?
The power supply range is 1.71 to 3.6 V (internal LDO) and 1.00 to 1.32 V (external SMPS).
- What are the low-power modes available on the STM32L412KBU6?
The device supports VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode.
- How many high-current I/Os does the STM32L412KBU6 have?
The device has 26 high-current I/Os.
- Does the STM32L412KBU6 include any integrated operational amplifiers or comparators?
Yes, it includes one operational amplifier and two comparators.
- What is the temperature range for the STM32L412KBU6?
The operating temperature range is -40 to +85 °C (or +125 °C junction temperature).
