Overview
The STM32L431RCT6TR is an ultra-low-power microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core. This microcontroller operates at a frequency of up to 80 MHz and features a Floating Point Unit (FPU) single precision, supporting 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 device is designed for low-power applications, with a comprehensive set of power-saving modes and a wide temperature range of -40 to +85 °C, +105 °C, or +125 °C, depending on the junction temperature. It supports a power supply range of 1.71 to 3.6 V.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® Cortex®-M4 32-bit RISC core |
| Frequency | Up to 80 MHz |
| Power Supply | 1.71 to 3.6 V |
| Temperature Range | -40 to +85 °C, +105 °C, or +125 °C |
| Flash Memory | Up to 256 Kbyte |
| SRAM | 64 Kbyte |
| ADC | Fast 12-bit ADC (5 Msps) |
| DAC Channels | 2 |
| Operational Amplifier | 1 |
| Comparators | 2 |
| Timers | 1 x 32-bit, 5 x 16-bit, 2 x 16-bit low-power |
| PWM Timer | 1 x 16-bit dedicated to motor control |
| Capacitive Sensing Channels | Up to 21 |
| Communication Interfaces | SPI, USART, I2S, CAN 2.0 |
| Package | 64-pin WLCSP 3.2x3.2x0.6 P 0.35 mm |
Key Features
- Ultra-low-power consumption with FlexPowerControl.
- High-performance Arm® Cortex®-M4 32-bit RISC core with FPU single precision.
- Full set of DSP instructions and memory protection unit (MPU).
- Fast 12-bit ADC (5 Msps), two comparators, one operational amplifier, and two DAC channels.
- Internal voltage reference buffer, low-power RTC, and various timers (32-bit, 16-bit, and low-power timers).
- Up to 21 capacitive sensing channels.
- Standard and advanced communication interfaces including SPI, USART, I2S, and CAN 2.0.
- Independent power supplies for analog components and VBAT input for RTC and backup registers.
- Comprehensive set of power-saving modes.
Applications
- Low-power IoT devices and smart sensors.
- Industrial automation and control systems.
- Medical devices requiring low power consumption.
- Automotive systems, especially those needing robust temperature range support.
- Consumer electronics such as wearables and portable devices.
- Motor control and power management systems.
Q & A
- What is the core architecture of the STM32L431RCT6TR?
The STM32L431RCT6TR is based on the Arm® Cortex®-M4 32-bit RISC core.
- What is the maximum operating frequency of the STM32L431RCT6TR?
The maximum operating frequency is up to 80 MHz.
- What is the power supply range for the STM32L431RCT6TR?
The power supply range is from 1.71 to 3.6 V.
- What are the temperature ranges supported by the STM32L431RCT6TR?
The device supports temperature ranges of -40 to +85 °C, +105 °C, or +125 °C.
- How much flash memory and SRAM does the STM32L431RCT6TR have?
The device has up to 256 Kbyte of flash memory and 64 Kbyte of SRAM.
- What types of timers are available on the STM32L431RCT6TR?
The device includes one 32-bit timer, five 16-bit timers, two 16-bit low-power timers, and one 16-bit PWM timer dedicated to motor control.
- Does the STM32L431RCT6TR support capacitive sensing?
Yes, it supports up to 21 capacitive sensing channels.
- What communication interfaces are available on the STM32L431RCT6TR?
The device supports SPI, USART, I2S, and CAN 2.0 communication interfaces.
- What is the package type for the STM32L431RCT6TR?
The package type is a 64-pin WLCSP 3.2x3.2x0.6 P 0.35 mm.
- What are some typical applications for the STM32L431RCT6TR?
Typical applications include low-power IoT devices, industrial automation, medical devices, automotive systems, consumer electronics, and motor control systems.
