Overview
The STM32L476VGT3 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L476xx family. It is based on the high-performance Arm® Cortex®-M4 32-bit RISC core, operating at frequencies up to 80 MHz. This microcontroller features a Floating Point Unit (FPU) that supports all Arm® single-precision data-processing instructions and includes a full set of DSP instructions and a Memory Protection Unit (MPU) for enhanced application security.
The device is designed for low-power applications, offering various power-saving modes and a wide range of peripherals and interfaces. It is suitable for applications requiring high performance, low power consumption, and advanced features.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memories | 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 |
| ADCs | Up to three 12-bit ADCs, 5 Msps |
| DACs | Two 12-bit DAC output channels |
| Timers | 16x timers (including 2x 16-bit advanced motor-control, 2x 32-bit, and 5x 16-bit general purpose) |
| Communication Interfaces | USB OTG 2.0 full-speed, 3x I2Cs, 3x SPIs, 3x USARTs, 2x UARTs, 1x Low-Power UART, 2x SAIs, 1x SDMMC, 1x CAN |
| Package | LQFP 100 14x14x1.4 mm |
Key Features
- Ultra-low-power with FlexPowerControl
- Includes ST state-of-the-art patented technology
- RTC with HW calendar, alarms, and calibration
- LCD 8×40 or 4×44 with internal step-up converter
- Up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors
- Rich analog peripherals including 3x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, and 2x ultra-low-power comparators
- 20x communication interfaces including USB OTG, I2Cs, SPIs, USARTs, UARTs, SAIs, SDMMC, and CAN
- Low-power modes: VBAT mode, Shutdown mode, Standby mode, Stop 2 mode
- Batch acquisition mode (BAM) and 4 µs wakeup from Stop mode
- Brown out reset (BOR) and interconnect matrix
Applications
The STM32L476VGT3 is versatile and can be used in a variety of applications that require low power consumption and high performance. Some typical applications include:
- Industrial automation and control systems
- Medical devices requiring low power and high precision
- Consumer electronics such as smart home devices and wearables
- Automotive systems, especially those requiring low power and robust communication interfaces
- IoT devices that need efficient power management and advanced peripherals
Q & A
- What is the core architecture of the STM32L476VGT3?
The STM32L476VGT3 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU), operating at frequencies up to 80 MHz.
- What are the power supply and temperature ranges of the STM32L476VGT3?
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 memories are available on the STM32L476VGT3?
The device features up to 1 MB of flash memory and up to 128 KB of SRAM.
- What are the key analog peripherals of the STM32L476VGT3?
The device includes 3x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, and 2x ultra-low-power comparators.
- What communication interfaces are available on the STM32L476VGT3?
The device supports USB OTG 2.0 full-speed, 3x I2Cs, 3x SPIs, 3x USARTs, 2x UARTs, 1x Low-Power UART, 2x SAIs, 1x SDMMC, and 1x CAN.
- What are the low-power modes available on the STM32L476VGT3?
The device offers VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode for low-power operation.
- Does the STM32L476VGT3 support capacitive sensing?
Yes, the device supports up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- What is the package type of the STM32L476VGT3?
The device is available in an LQFP 100 14x14x1.4 mm package.
- Is the STM32L476VGT3 suitable for industrial applications?
Yes, the device is suitable for industrial automation and control systems due to its robust features and low power consumption.
- Does the STM32L476VGT3 have any specific power-saving features?
Yes, the device features batch acquisition mode (BAM) and a fast 4 µs wakeup from Stop mode, along with other power-saving modes.
- Is the STM32L476VGT3 compliant with environmental standards?
Yes, the device is ECOPACK2 compliant, ensuring it meets environmental standards.
