Overview
The STM32L475VET6 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 STM32L475VET6 is designed for low-power applications, offering various power-saving modes such as VBAT, Shutdown, Standby, and Stop modes, with current consumption as low as 30 nA in Shutdown mode and 1.1 µA in Stop 2 mode. The device includes high-speed memories, a flexible external memory controller, and a Quad SPI flash memories interface.
This microcontroller is equipped with a rich set of peripherals, including analog and digital interfaces, communication interfaces like USB OTG, I2C, SPI, and CAN, and advanced timers for motor control. It also supports capacitive sensing and touchkey, linear, and rotary touch sensors.
Key Specifications
| Specification | Details |
|---|---|
| Core | ARM® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memories | Up to 1 MB Flash, 2 banks read-while-write, up to 128 KB SRAM |
| Power Supply | 1.71 V to 3.6 V |
| Temperature Range | -40 °C to 85/105/125 °C |
| Power Consumption | 300 nA in VBAT mode, 30 nA in Shutdown mode, 120 nA in Standby mode, 1.1 µA in Stop 2 mode |
| ADCs | Up to 2 fast 12-bit ADCs (5 Msps), up to 16-bit with hardware oversampling |
| DACs | 2x 12-bit DAC output channels, low-power sample and hold |
| Operational Amplifiers | 2x operational amplifiers with built-in PGA |
| Comparators | 2x ultra-low-power comparators |
| Communication Interfaces | USB OTG 2.0 full-speed, 2x SAIs, 3x I2C, 5x USARTs, 3x SPIs, CAN (2.0B Active), SDMMC interface |
| Timers | 2x 32-bit, 9x 16-bit general-purpose timers, 2x 16-bit low-power timers, 2x watchdogs, SysTick timer |
| Capacitive Sensing | Up to 21 capacitive sensing channels |
| Package | LQFP 100 14x14x1.4 mm |
Key Features
- Ultra-low-power with FlexPowerControl: Various power-saving modes including VBAT, Shutdown, Standby, and Stop modes.
- High-performance Core: ARM® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait-state execution from Flash memory.
- Rich Analog Peripherals: Includes 2x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, and 2x ultra-low-power comparators.
- Advanced Communication Interfaces: USB OTG 2.0 full-speed, 2x SAIs, 3x I2C, 5x USARTs, 3x SPIs, CAN (2.0B Active), and SDMMC interface.
- Extensive Timer Support: 2x 32-bit timers, 9x 16-bit general-purpose timers, 2x 16-bit low-power timers, and 2x watchdogs.
- Capacitive Sensing: Up to 21 capacitive sensing channels supporting touchkey, linear, and rotary touch sensors.
- Security Features: Readout protection, write protection, proprietary code readout protection, and Firewall.
- Development Support: Serial wire debug (SWD), JTAG, Embedded Trace Macrocell™.
Applications
- Industrial Automation: Suitable for motor control, sensor interfaces, and other industrial automation tasks due to its advanced timers and analog peripherals.
- Medical Devices: The low power consumption and rich set of peripherals make it ideal for medical devices that require precise analog measurements and low energy usage.
- Consumer Electronics: Can be used in various consumer electronics such as smart home devices, wearables, and other IoT applications where low power and high performance are required.
- Automotive Systems: Applicable in automotive systems for sensor interfaces, control units, and other applications requiring robust and low-power microcontrollers.
- Energy Management: Suitable for energy management systems due to its ultra-low-power modes and efficient power management features.
Q & A
- What is the core architecture of the STM32L475VET6?
The STM32L475VET6 is based on the ARM® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What are the power supply and temperature range specifications of the STM32L475VET6?
The power supply range is 1.71 V to 3.6 V, and the temperature range is -40 °C to 85/105/125 °C.
- What are the different power-saving modes available in the STM32L475VET6?
The device offers VBAT, Shutdown, Standby, and Stop modes, with current consumption as low as 30 nA in Shutdown mode and 1.1 µA in Stop 2 mode.
- What types of analog peripherals are available on the STM32L475VET6?
The device includes 2x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, and 2x ultra-low-power comparators.
- What communication interfaces does the STM32L475VET6 support?
The device supports USB OTG 2.0 full-speed, 2x SAIs, 3x I2C, 5x USARTs, 3x SPIs, CAN (2.0B Active), and SDMMC interface.
- How many capacitive sensing channels does the STM32L475VET6 have?
The device supports up to 21 capacitive sensing channels.
- What is the package type of the STM32L475VET6?
The package type is LQFP 100 14x14x1.4 mm.
- Does the STM32L475VET6 support any security features?
Yes, it includes readout protection, write protection, proprietary code readout protection, and Firewall.
- What development tools are available for the STM32L475VET6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- What are some typical applications of the STM32L475VET6?
It is suitable for industrial automation, medical devices, consumer electronics, automotive systems, and energy management systems.
- Is the STM32L475VET6 compliant with any environmental standards?
Yes, all packages are ECOPACK2® compliant.
