Overview
The STM32L475VCT6 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 STM32L475VCT6 is designed for low-power applications, offering various power modes such as VBAT, Shutdown, Standby, and Stop modes, with current consumption as low as 300 nA in VBAT 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 rich in peripherals, including multiple timers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), operational amplifiers, and advanced communication interfaces like USB OTG, SAIs, I2C, USARTs, SPIs, and CAN.
Key Specifications
| Specification | Details |
|---|---|
| Core | ARM® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memory | Up to 1 MB Flash, up to 128 KB SRAM |
| Power Supply | 1.71 V to 3.6 V |
| Temperature Range | -40 °C to 85/105/125 °C |
| Timers | 16x timers: 2x 16-bit advanced motor-control, 2x 32-bit, 5x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers |
| ADCs | Up to 2x 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 FM+, 6x USARTs, 3x SPIs, CAN (2.0B Active), SDMMC interface |
| Capacitive Sensing Channels | Up to 21 capacitive sensing channels |
| DMA Controller | 14-channel DMA controller |
| Random Number Generator | True random number generator |
| CRC Calculation Unit | CRC calculation unit, 96-bit unique ID |
Key Features
- Ultra-low-power with FlexPowerControl
- ARM® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™)
- Up to 1 MB Flash, 2 banks read-while-write, proprietary code readout protection
- Up to 128 KB of SRAM including 32 KB with hardware parity check
- External memory interface for static memories supporting SRAM, PSRAM, NOR and NAND memories
- Quad SPI memory interface
- Rich analog peripherals: 2x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, 2x ultra-low-power comparators
- Advanced communication interfaces: USB OTG 2.0 full-speed, 2x SAIs, 3x I2C FM+, 6x USARTs, 3x SPIs, CAN (2.0B Active), SDMMC interface
- Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors
- 16x timers: 2x 16-bit advanced motor-control, 2x 32-bit and 5x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers
- True random number generator, CRC calculation unit, 96-bit unique ID
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as smart home devices and wearables
- Automotive systems, especially those requiring low power and high performance
- IoT devices and smart sensors
- Energy-efficient solutions in various sectors
Q & A
- What is the core architecture of the STM32L475VCT6?
The STM32L475VCT6 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 STM32L475VCT6?
The device operates with a power supply of 1.71 V to 3.6 V and a temperature range of -40 °C to 85/105/125 °C.
- What types of memory does the STM32L475VCT6 have?
The device includes up to 1 MB Flash and up to 128 KB SRAM.
- What are the key analog peripherals of the STM32L475VCT6?
The device features 2x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, and 2x ultra-low-power comparators.
- What communication interfaces are available on the STM32L475VCT6?
The device includes USB OTG 2.0 full-speed, 2x SAIs, 3x I2C FM+, 6x USARTs, 3x SPIs, CAN (2.0B Active), and SDMMC interface.
- How many capacitive sensing channels does the STM32L475VCT6 support?
The device supports up to 21 capacitive sensing channels.
- What are the low-power modes available on the STM32L475VCT6?
The device offers VBAT, Shutdown, Standby, and Stop modes with very low current consumption.
- Does the STM32L475VCT6 support external memory interfaces?
Yes, it supports external memory interfaces for static memories like SRAM, PSRAM, NOR, and NAND memories.
- What development tools are available for the STM32L475VCT6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- Is the STM32L475VCT6 RoHS compliant?
Yes, the STM32L475VCT6 is RoHS compliant and follows the ECOPACK2® standards.
- What is the typical current consumption in Run mode for the STM32L475VCT6?
The typical current consumption in Run mode is 100 μA/MHz.
