Overview
The STM32L476ZGT6 is an ultra-low-power microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core. This MCU 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 device is part of the STM32L476xx family, which is known for its ultra-low-power consumption and advanced peripherals. It includes high-speed memories such as up to 1 Mbyte of flash memory and up to 128 Kbyte of SRAM, along with a flexible external memory controller and a Quad SPI flash memories interface.
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: 2x 16-bit advanced motor-control, 2x 32-bit, 5x 16-bit general purpose, etc. |
| Communication Interfaces | USB OTG 2.0 full-speed, 3x I2C, 3x SPI, 5x USARTs, CAN, SDMMC, etc. |
| Capacitive Sensing Channels | Up to 24 channels: support touchkey, linear and rotary touch sensors |
| RTC | RTC with HW calendar, alarms, and calibration |
| LCD Driver | LCD 8×40 or 4×44 with internal step-up converter |
| Power Modes | 300 nA in VBAT mode, 30 nA Shutdown mode, 120 nA Standby mode, etc. |
Key Features
- Ultra-low-power with FlexPowerControl, supporting various power-saving modes.
- Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™), and DSP instructions.
- High-speed memories: up to 1 Mbyte flash, up to 128 Kbyte SRAM, and external memory interface.
- Advanced analog peripherals: three 12-bit ADCs, two 12-bit DACs, two operational amplifiers, and two ultra-low-power comparators.
- Extensive range of communication interfaces: USB OTG 2.0, I2C, SPI, USART, CAN, SDMMC, and more.
- Integrated LCD driver and capacitive sensing channels for touchkey, linear, and rotary touch sensors.
- RTC with hardware calendar, alarms, and calibration.
- Multiple power supplies: independent supply for ADC, DAC, OPAMPs, and comparators, and dedicated supply for USB.
- Development support: serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
Applications
- Low-power IoT devices and smart home applications.
- Industrial automation and control systems.
- Medical devices requiring low power consumption and high performance.
- Automotive systems, including infotainment and driver assistance.
- Consumer electronics such as wearables, fitness trackers, and smartwatches.
- Energy metering and smart grid applications.
Q & A
- What is the core architecture of the STM32L476ZGT6?
The STM32L476ZGT6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the maximum operating frequency of the STM32L476ZGT6?
The maximum operating frequency is up to 80 MHz.
- What are the power supply ranges for the STM32L476ZGT6?
The power supply ranges from 1.71 V to 3.6 V.
- What are the key analog peripherals of the STM32L476ZGT6?
The key analog peripherals include three 12-bit ADCs, two 12-bit DACs, two operational amplifiers, and two ultra-low-power comparators.
- Does the STM32L476ZGT6 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 the STM32L476ZGT6?
The device features USB OTG 2.0, I2C, SPI, USART, CAN, SDMMC, and more.
- What is the temperature range for the STM32L476ZGT6?
The temperature range is from -40 °C to 85/105/125 °C.
- Does the STM32L476ZGT6 have an integrated LCD driver?
Yes, it includes an LCD driver for 8×40 or 4×44 displays with an internal step-up converter.
- What are the power-saving modes available on the STM32L476ZGT6?
The device supports various power-saving modes including VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode.
- Is the STM32L476ZGT6 suitable for low-power applications?
Yes, it is designed for ultra-low-power applications with features like FlexPowerControl and multiple power-saving modes.
