Overview
The STM32L412K8T6 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 microcontroller is equipped with high-speed memories, including up to 128 Kbytes of flash memory and 40 Kbytes of SRAM. It also features a Quad SPI flash memories interface and an extensive range of enhanced I/Os and peripherals connected to multiple buses.
The STM32L412K8T6 is designed for low-power applications, offering various power-saving modes and a wide operating temperature range from -40 °C to 85 °C (or 125 °C junction temperature).
Key Specifications
| Parameter | Value |
|---|---|
| Microcontroller Family | STM32L4 Series |
| Core | Arm® Cortex®-M4 32-bit RISC |
| CPU Speed | Up to 80 MHz |
| Program Memory Size | 128 KB |
| RAM Memory Size | 40 KB |
| Number of Pins | 32 Pins |
| Package Type | LQFP 32 (7x7x1.4 mm), UFQFPN 32 (5x5x0.55 mm) |
| Supply Voltage Min | 1.71 V |
| Supply Voltage Max | 3.6 V |
| Operating Temperature Range | -40 °C to 85 °C (or 125 °C junction temperature) |
| Embedded Interfaces | I2C, SPI, UART, USART, USB |
| ADC Resolution | 12-bit, 5 Msps |
| Timers | 1 x 32-bit, 4 x 16-bit, 2 x 16-bit low-power timers |
| Capacitive Sensing Channels | Up to 12 channels |
Key Features
- Ultra-low-power with FlexPowerControl
- 1.71 V to 3.6 V power supply
- Operating temperature range: -40 °C to 85/125 °C
- Low power modes: 300 nA in VBAT mode, 16 nA Shutdown mode, 32 nA Standby mode, 245 nA Standby mode with RTC, 0.7 μA Stop 2 mode, 0.95 μA with RTC
- Run mode power consumption: 79 μA/MHz (LDO Mode), 28 μA/MHz (@3.3 V SMPS Mode)
- Batch acquisition mode (BAM) and 4 μs wakeup from Stop mode
- Brown out reset (BOR) and interconnect matrix
- Integrated op-amp, comparator, and low-power RTC
- Standard and advanced communication interfaces: I2C, SPI, UART, USART, USB full-speed device crystal less
Applications
The STM32L412K8T6 is suitable for a wide range of applications that require low power consumption and high performance. These include:
- IoT devices and smart home appliances
- Industrial automation and control systems
- Medical devices and healthcare equipment
- Automotive systems and telematics
- Consumer electronics and wearable devices
- Energy management and metering systems
Q & A
- What is the core architecture of the STM32L412K8T6?
The STM32L412K8T6 is based on the Arm® Cortex®-M4 32-bit RISC core.
- What is the maximum CPU speed of the STM32L412K8T6?
The maximum CPU speed is up to 80 MHz.
- How much flash and SRAM memory does the STM32L412K8T6 have?
The device has up to 128 KB of flash memory and 40 KB of SRAM.
- What are the operating temperature ranges for the STM32L412K8T6?
The operating temperature range is from -40 °C to 85 °C (or 125 °C junction temperature).
- What are the power-saving modes available on the STM32L412K8T6?
The device offers several low power modes including VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode.
- Does the STM32L412K8T6 support capacitive sensing?
Yes, it supports up to 12 capacitive sensing channels.
- What communication interfaces are available on the STM32L412K8T6?
The device features I2C, SPI, UART, USART, and USB full-speed device interfaces.
- Is the STM32L412K8T6 RoHS compliant?
Yes, the STM32L412K8T6 is RoHS compliant.
- What are the typical applications for the STM32L412K8T6?
Typical applications include IoT devices, industrial automation, medical devices, automotive systems, and consumer electronics.
- What is the supply voltage range for the STM32L412K8T6?
The supply voltage range is from 1.71 V to 3.6 V.
- Does the STM32L412K8T6 have an integrated op-amp and comparator?
Yes, it includes an integrated op-amp and comparator.
