Overview
The STM32L476MEY6TR is a high-performance, ultra-low-power microcontroller from STMicroelectronics, part of the STM32L4 series. It is based on the Arm® Cortex®-M4 32-bit processor with a floating-point unit (FPU) and operates at a frequency of up to 80 MHz. This MCU is designed for applications requiring high processing power, low energy consumption, and a rich set of peripherals. The device is particularly suited for use in battery-powered devices, IoT applications, and other systems where power efficiency is critical.
Key Specifications
| Parameter | Value |
|---|---|
| Program Memory Size | 512 kB (up to 1 MB for the series) |
| Data Bus Width | 32 bit |
| ADC Resolution | 3 x 12 bit, up to 16 bit with hardware oversampling |
| Maximum Clock Frequency | 80 MHz |
| Power Supply Voltage | 1.71 V to 3.6 V |
| Temperature Range | -40 °C to 85/105/125 °C |
| SRAM | Up to 128 KB (including 32 KB with hardware parity check) |
| Package Type | WLCSP81 |
| Communication Interfaces | USB OTG 2.0, 2x SAIs, 3x I2C, 5x USARTs, 1x LPUART, 3x SPIs, Quad SPI, CAN, SDMMC |
Key Features
- Ultra-low-power with FlexPowerControl: Features such as 300 nA in VBAT mode, 30 nA Shutdown mode, and 1.1 µA Stop 2 mode with RTC.
- Rich Analog Peripherals: Includes 3x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, and 2x ultra-low-power comparators.
- Advanced Timers and Clocks: 16 timers including advanced motor-control, general-purpose, and low-power timers, along with multiple clock sources and PLLs.
- Communication Interfaces: USB OTG 2.0, serial audio interfaces, I2C, USARTs, LPUART, SPIs, Quad SPI, CAN, and SDMMC.
- Capacitive Sensing and LCD Support: Up to 24 capacitive sensing channels and LCD controller with step-up converter.
- Security and Development Tools: True random number generator, CRC calculation unit, 96-bit unique ID, and support for serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
Applications
The STM32L476MEY6TR is suitable for a wide range of applications, including:
- Battery-Powered Devices: Due to its ultra-low-power consumption, it is ideal for devices that require long battery life.
- IoT Applications: With its rich set of communication interfaces and low power modes, it is well-suited for Internet of Things (IoT) devices.
- Industrial Automation: The advanced motor-control timers and robust analog peripherals make it a good fit for industrial automation applications.
- Consumer Electronics: It can be used in various consumer electronics such as smart home devices, wearables, and other portable electronics.
Q & A
- What is the maximum clock frequency of the STM32L476MEY6TR?
The maximum clock frequency is up to 80 MHz. - What is the power supply voltage range for this MCU?
The power supply voltage range is from 1.71 V to 3.6 V. - What types of timers are available on this MCU?
The MCU includes 16 timers: 2x 16-bit advanced motor-control, 2x 32-bit, 5x 16-bit general purpose, 2x 16-bit basic, and 2x low-power 16-bit timers available in Stop mode, along with 2 watchdogs and a SysTick timer. - Does the STM32L476MEY6TR support capacitive sensing?
Yes, it supports up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors. - What communication interfaces are available on this MCU?
The MCU includes USB OTG 2.0, 2x SAIs, 3x I2C, 5x USARTs, 1x LPUART, 3x SPIs, Quad SPI, CAN, and SDMMC. - What is the SRAM capacity of the STM32L476MEY6TR?
The SRAM capacity is up to 128 KB, including 32 KB with hardware parity check. - Is the STM32L476MEY6TR suitable for battery-powered devices?
Yes, it is highly suitable due to its ultra-low-power consumption features such as 300 nA in VBAT mode and 1.1 µA Stop 2 mode with RTC. - What type of package does the STM32L476MEY6TR come in?
The STM32L476MEY6TR comes in a WLCSP81 package. - Does the MCU support LCD displays?
Yes, it supports LCD displays with an 8× 40 or 4× 44 configuration and includes a step-up converter. - What development tools are supported by the STM32L476MEY6TR?
The MCU supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
