Overview
The STM32L431CCU6TR is an ultra-low-power microcontroller from STMicroelectronics, based on the high-performance Arm Cortex-M4 32-bit RISC core. This device is part of the STM32L431xx series and is designed for applications requiring low power consumption and high performance. The Cortex-M4 core includes a Floating Point Unit (FPU) for single-precision operations, a full set of DSP instructions, and a Memory Protection Unit (MPU) for enhanced application security.
The microcontroller operates within a temperature range of -40 to +85 °C (or up to +125 °C junction temperature) and is powered by a 1.71 to 3.6 V supply. It features dynamic voltage scaling to optimize power consumption and supports various power-saving modes, including low-power run and sleep modes.
Key Specifications
| Parameter | Value |
|---|---|
| Microcontroller Core | Arm Cortex-M4 32-bit RISC |
| Operating Temperature (°C) | -40 to +85 (up to +125 °C junction) |
| Power Supply (V) | 1.71 to 3.6 |
| Flash Memory | Up to 256 Kbyte |
| SRAM | 64 Kbyte (48 Kbyte + 16 Kbyte) |
| ADC | 12-bit, 5 Msps |
| DAC Channels | 2 (12-bit) |
| Timers | 1 x 32-bit, 5 x 16-bit, 2 x 16-bit low-power |
| Communication Interfaces | 3 x I2C, 3 x SPI, 3 x USART, 1 x Low-Power UART, 1 x SAI |
| Capacitive Sensing Channels | Up to 21 |
| Integrated Op-Amps | 1 |
| Comparators | 2 |
| High Current I/Os | 38 |
Key Features
- Ultra-low-power consumption with dynamic voltage scaling and multiple power-saving modes.
- High-performance Arm Cortex-M4 32-bit RISC core with FPU and DSP instructions.
- Memory Protection Unit (MPU) for enhanced security.
- Fast 12-bit ADC and two DAC channels.
- One operational amplifier and two comparators.
- Extensive range of communication interfaces including I2C, SPI, USART, and SAI.
- Up to 21 capacitive sensing channels.
- Low-power RTC and various timer options.
- Independent power supplies for analog components.
- VBAT input for RTC and backup register backup.
Applications
- Low-power IoT devices and sensors.
- Industrial automation and control systems.
- Medical devices requiring low power consumption.
- Automotive systems, especially those needing advanced motor control.
- Consumer electronics with power efficiency requirements.
- Smart home devices and energy management systems.
Q & A
- What is the core architecture of the STM32L431CCU6TR?
The STM32L431CCU6TR is based on the Arm Cortex-M4 32-bit RISC core with a Floating Point Unit (FPU) and DSP instructions.
- What is the operating temperature range of the STM32L431CCU6TR?
The device operates within a temperature range of -40 to +85 °C (or up to +125 °C junction temperature).
- What is the power supply voltage range for the STM32L431CCU6TR?
The power supply voltage range is 1.71 to 3.6 V.
- How much Flash and SRAM memory does the STM32L431CCU6TR have?
The device has up to 256 Kbyte of Flash memory and 64 Kbyte of SRAM.
- What communication interfaces are available on the STM32L431CCU6TR?
The device features 3 x I2C, 3 x SPI, 3 x USART, 1 x Low-Power UART, and 1 x SAI.
- Does the STM32L431CCU6TR support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels.
- What are the power-saving modes available on the STM32L431CCU6TR?
The device supports low-power run and sleep modes, among others.
- Can the STM32L431CCU6TR be used in automotive applications?
Yes, it is suitable for automotive systems, especially those requiring advanced motor control.
- Does the STM32L431CCU6TR have integrated op-amps and comparators?
Yes, it includes one operational amplifier and two comparators.
- What is the purpose of the VBAT input on the STM32L431CCU6TR?
The VBAT input is used to backup the RTC and backup registers.
