Overview
The STM32L4A6RGT7 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 STM32L4A6RGT7 is part of the STM32L4A6xG family, which is designed for low-power applications. It embeds high-speed memories, including 1 Mbyte of flash memory and 320 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 |
| Memory | 1 Mbyte of flash memory, 320 Kbyte of SRAM |
| Power Supply | 1.71 V to 3.6 V (internal LDO), 1.05 to 1.32 V (external SMPS) |
| Temperature Range | -40 °C to +85 °C (+105 °C junction), -40 °C to +125 °C (+130 °C junction) |
| ADCs | Up to three fast 12-bit ADCs (5 Msps) |
| DACs | Two 12-bit DAC output channels |
| Operational Amplifiers | Two operational amplifiers with built-in PGA |
| Comparators | Two ultra-low-power comparators |
| Communication Interfaces | USB OTG 2.0 full-speed, 4x I2C, 3x SPI, 5x USARTs, 2x CANs, SDMMC, SWPMI, etc. |
| Timers | Two 32-bit timers, nine 16-bit timers, two 16-bit low-power timers |
| Capacitive Sensing Channels | Up to 24 capacitive sensing channels |
| Package | LQFP 64 10x10x1.4 mm |
Key Features
- Ultra-low-power with FlexPowerControl, featuring various power-saving modes such as VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode.
- High-performance Arm® Cortex®-M4 32-bit RISC core with FPU and DSP instructions.
- Rich analog peripherals including ADCs, DACs, operational amplifiers, and comparators with independent supply inputs.
- Extensive range of communication interfaces including USB OTG, I2C, SPI, USARTs, CANs, and SDMMC.
- Integrated LCD driver with internal step-up converter and support for up to 24 capacitive sensing channels.
- AES and HASH hardware accelerators for enhanced security.
- Development support with serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
Applications
The STM32L4A6RGT7 is suitable for a wide range of applications that require low power consumption and high performance. These 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 needing advanced motor control and communication interfaces.
- IoT devices that demand low power and robust communication capabilities.
Q & A
- What is the core architecture of the STM32L4A6RGT7?
The STM32L4A6RGT7 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU).
- What is the power supply range for the STM32L4A6RGT7?
The device operates from a power supply of 1.71 V to 3.6 V using the internal LDO regulator, and 1.05 to 1.32 V using an external SMPS supply.
- What are the key analog peripherals of the STM32L4A6RGT7?
The device includes up to 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 STM32L4A6RGT7?
The device features USB OTG 2.0 full-speed, four I2Cs, three SPIs, five USARTs, two CANs, SDMMC, and SWPMI among others.
- What is the temperature range for the STM32L4A6RGT7?
The device operates in the temperature range of -40 °C to +85 °C (+105 °C junction), and -40 °C to +125 °C (+130 °C junction).
- What are the power-saving modes available on the STM32L4A6RGT7?
The device supports various power-saving modes including VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode.
- Does the STM32L4A6RGT7 support capacitive sensing?
Yes, the device supports up to 24 capacitive sensing channels.
- What is the package type for the STM32L4A6RGT7?
The device is available in LQFP 64 10x10x1.4 mm packages.
- Does the STM32L4A6RGT7 have built-in security features?
Yes, the device includes AES and HASH hardware accelerators for enhanced security.
- What development tools are supported by the STM32L4A6RGT7?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™ for development.
