Overview
The STM32L471VGT3 is a high-performance, ultra-low-power microcontroller from STMicroelectronics, part of the STM32L4 series. It is based on the Arm® Cortex®-M4 CPU with a floating-point unit (FPU) and features the Adaptive real-time accelerator (ART Accelerator™) for 0-wait-state execution from Flash memory. This microcontroller is designed to offer a balance between high processing performance and low power consumption, making it suitable for a wide range of applications, including industrial, medical, and consumer electronics.
Key Specifications
| Specification | Value |
|---|---|
| Supply Voltage | 1.71 V to 3.6 V |
| Operating Temperature | -40 °C to 85/105/125 °C |
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Flash Memory | Up to 1 MB |
| SRAM | Up to 128 KB |
| Power Consumption | 300 nA in VBAT mode, 30 nA in Shutdown mode, 120 nA in Standby mode |
| Clock Sources | 4 to 48 MHz crystal oscillator, 32 kHz crystal oscillator for RTC, internal 16 MHz and 32 kHz RC oscillators |
| I/Os | Up to 114 fast I/Os, most 5 V-tolerant |
| Analog Peripherals | 3x 12-bit ADC, 2x 12-bit DAC, 2x operational amplifiers, 2x ultra-low-power comparators |
| Communication Interfaces | 2x SAIs, 3x I2C, 5x USARTs, 3x SPIs, CAN (2.0B Active), SDMMC interface |
| Timers | 16x timers including advanced motor-control, general purpose, and low-power timers |
Key Features
- Ultra-low-power with FlexPowerControl, including 300 nA in VBAT mode and 30 nA in Shutdown mode.
- Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™), and up to 80 MHz frequency.
- High performance with 100 DMIPS and DSP instructions.
- Rich analog peripherals including 3x 12-bit ADCs, 2x 12-bit DACs, operational amplifiers, and ultra-low-power comparators.
- Extensive communication interfaces such as SAIs, I2C, USARTs, SPIs, CAN, and SDMMC.
- Advanced timers and watchdogs, including low-power timers available in Stop mode.
- RTC with hardware calendar, alarms, and calibration.
- Up to 24 capacitive sensing channels supporting touchkey, linear, and rotary touch sensors.
- True random number generator and CRC calculation unit.
- Development support with serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
Applications
The STM32L471VGT3 is versatile and can be used in various applications due to its high performance and low power consumption. Some of the key application areas include:
- Industrial automation and control systems.
- Medical devices requiring low power and high reliability.
- Consumer electronics such as smart home devices and wearables.
- Automotive systems, especially those requiring low power modes.
- IoT devices that need efficient power management and robust communication capabilities.
Q & A
- What is the core architecture of the STM32L471VGT3?
The STM32L471VGT3 is based on the Arm® 32-bit Cortex®-M4 CPU with a floating-point unit (FPU) and features the Adaptive real-time accelerator (ART Accelerator™).
- What is the power supply range for the STM32L471VGT3?
The power supply range is from 1.71 V to 3.6 V.
- What are the operating temperature ranges for the STM32L471VGT3?
The operating temperature ranges from -40 °C to 85/105/125 °C.
- How much flash memory does the STM32L471VGT3 have?
The STM32L471VGT3 has up to 1 MB of flash memory.
- What are the key analog peripherals of the STM32L471VGT3?
The key analog peripherals include 3x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, and 2x ultra-low-power comparators.
- What communication interfaces are available on the STM32L471VGT3?
The communication interfaces include 2x SAIs, 3x I2C, 5x USARTs, 3x SPIs, CAN (2.0B Active), and SDMMC interface.
- What are the power consumption modes of the STM32L471VGT3?
The power consumption modes include 300 nA in VBAT mode, 30 nA in Shutdown mode, and 120 nA in Standby mode.
- Does the STM32L471VGT3 support capacitive sensing?
Yes, it supports up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- What development tools are supported by the STM32L471VGT3?
The development tools include serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- Is the STM32L471VGT3 environmentally friendly?
Yes, all packages are ECOPACK2® compliant.
- What is the maximum frequency of the STM32L471VGT3?
The maximum frequency is up to 80 MHz.
