Overview
The STM32L476ZET6TR 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 a frequency of up to 80 MHz. The device features a Floating Point Unit (FPU) and 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) for enhanced application security.
This microcontroller is designed for low-power applications, offering various power-saving modes and a wide range of peripherals and interfaces. It is suitable for a variety of applications requiring high performance and low energy consumption.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Flash Memory | Up to 1 MB, 2 banks read-while-write, proprietary code readout protection |
| SRAM | Up to 128 KB, including 32 KB with hardware parity check |
| Power Supply | 1.71 V to 3.6 V, external SMPS supply: 1.05 to 1.32 V |
| Temperature Range | -40 °C to 85/105/125 °C |
| ADCs | Up to three fast 12-bit ADCs (5 Msps), up to 16-bit with hardware oversampling |
| DACs | Two 12-bit DAC output channels, low-power sample and hold |
| Operational Amplifiers | Two operational amplifiers with built-in PGA |
| Comparators | Two ultra-low-power comparators |
| Timers | 16 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 |
| Communication Interfaces | USB OTG 2.0 full-speed, 3x I2C, 3x SPI, 5x USART, 1x LPUART, CAN (2.0B Active), SDMMC interface |
| Package | LQFP 144 20x20x1.4 mm |
| Power Consumption | 300 nA in VBAT mode, 30 nA Shutdown mode, 120 nA Standby mode, 1.1 µA Stop 2 mode, 100 µA/MHz run mode (LDO Mode) |
Key Features
- Ultra-low-power with FlexPowerControl
- 1.71 V to 3.6 V power supply
- -40 °C to 85/105/125 °C temperature range
- 300 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
- Low-power modes: Shutdown, Standby, Stop 2, and more
- RTC with HW calendar, alarms, and calibration
- LCD 8×40 or 4×44 with internal step-up converter
- Up to 24 capacitive sensing channels: support touchkey, linear and rotary touch sensors
- Rich analog peripherals: ADCs, DACs, operational amplifiers, and comparators
- 20x communication interfaces including USB OTG, I2C, SPI, USART, CAN, and SDMMC
- 14-channel DMA controller, true random number generator, and CRC calculation unit
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
- All packages are ECOPACK2 compliant
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 metering and monitoring systems
Q & A
- What is the core architecture of the STM32L476ZET6TR?
The STM32L476ZET6TR is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU), operating at up to 80 MHz.
- What is the power supply range for the STM32L476ZET6TR?
The device operates from a 1.71 V to 3.6 V power supply, with an external SMPS supply option from 1.05 to 1.32 V.
- What are the key low-power modes of the STM32L476ZET6TR?
The device features several low-power modes including Shutdown, Standby, Stop 2, and more, with consumption as low as 300 nA in VBAT mode.
- What types of memory does the STM32L476ZET6TR have?
The device includes up to 1 MB of Flash memory and up to 128 KB of SRAM, with external memory interface support for static memories.
- What are the key analog peripherals of the STM32L476ZET6TR?
The device features three 12-bit ADCs, two 12-bit DAC output channels, two operational amplifiers, and two ultra-low-power comparators.
- What communication interfaces are available on the STM32L476ZET6TR?
The device includes USB OTG 2.0 full-speed, three I2C, three SPI, five USART, one LPUART, CAN (2.0B Active), and SDMMC interface.
- What is the package type of the STM32L476ZET6TR?
The device is available in an LQFP 144 20x20x1.4 mm package.
- Is the STM32L476ZET6TR environmentally friendly?
Yes, all packages are ECOPACK2 compliant.
- What development tools are supported by the STM32L476ZET6TR?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- What are some typical applications for the STM32L476ZET6TR?
The device is suitable for industrial automation, medical devices, consumer electronics, automotive systems, IoT devices, and energy metering systems.
