Overview
The STM32L412RBI6P 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. This 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, as well as a Quad SPI flash memory interface. It also includes an extensive range of enhanced I/Os and peripherals connected to multiple buses.
The STM32L412RBI6P is designed for low-power applications, offering various power-saving modes and a wide temperature range of -40 to +85 °C (or +125 °C junction temperature). It supports independent power supplies for analog components and features a comprehensive set of communication interfaces.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memory | Up to 128 Kbytes of flash memory, 40 Kbytes of 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 (or +125 °C junction temperature) |
| ADC | Two 12-bit ADCs, 5 Msps, up to 16-bit with hardware oversampling |
| Timers | One 32-bit timer, four 16-bit timers, two low-power 16-bit timers |
| Communication Interfaces | Three I2Cs, two SPIs, three USARTs, one Low-Power UART, one USB full-speed device |
| Package | UFBGA 64 5x5x0.6 P 0.5 mm |
| Power Modes | Shutdown mode (16 nA), Standby mode (32 nA), Stop 2 mode (0.7 µA), etc. |
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
- Quad SPI flash memory interface
- Rich analog peripherals: two 12-bit ADCs, one operational amplifier, one ultra-low-power comparator
- Up to 12 capacitive sensing channels
- Comprehensive set of power-saving modes: Shutdown, Standby, Stop 2, etc.
- Independent power supplies for analog components
- Support for external SMPS supply
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
The STM32L412RBI6P is suitable for a wide range of low-power applications, including:
- IoT devices and smart sensors
- Wearable electronics and health monitors
- Industrial automation and control systems
- Automotive systems requiring low power consumption
- Consumer electronics such as smart home devices and energy meters
Q & A
- What is the core architecture of the STM32L412RBI6P?
The STM32L412RBI6P is based on the Arm® 32-bit Cortex®-M4 CPU with an integrated FPU.
- What is the maximum frequency of the STM32L412RBI6P?
The maximum frequency is up to 80 MHz.
- What types of memory does the STM32L412RBI6P have?
It has up to 128 Kbytes of flash memory and 40 Kbytes of SRAM.
- What is the power supply range for the STM32L412RBI6P?
The power supply range is 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 STM32L412RBI6P?
The key power-saving modes include Shutdown, Standby, Stop 2, and others, with current consumptions as low as 16 nA in Shutdown mode.
- What communication interfaces are available on the STM32L412RBI6P?
The device features three I2Cs, two SPIs, three USARTs, one Low-Power UART, and one USB full-speed device.
- What is the package type of the STM32L412RBI6P?
The package type is UFBGA 64 5x5x0.6 P 0.5 mm.
- Does the STM32L412RBI6P support capacitive sensing?
Yes, it supports up to 12 capacitive sensing channels.
- What are the temperature ranges for the STM32L412RBI6P?
The temperature range is -40 °C to +85 °C (or +125 °C junction temperature).
- Does the STM32L412RBI6P have any dedicated power supplies for analog components?
Yes, it has independent power supplies for ADC, OPAMP, and comparator.
- What development tools are supported by the STM32L412RBI6P?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
