Overview
The STM32L4A6ZGT6 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) single precision, supporting 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 STM32L4A6xG family, known for its ultra-low-power consumption and advanced peripherals, making it suitable for a wide range of low-power applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memories | 1 MB flash, 320 KB SRAM (including 64 KB with hardware parity check) |
| Power Supply | 1.71 V to 3.6 V (internal LDO), 1.05 V to 1.32 V (external SMPS) |
| Temperature Range | -40 °C to 85 °C / 125 °C |
| ADCs | Up to 3 fast 12-bit ADCs (5 Msps), up to 16-bit with hardware oversampling |
| DACs | 2x 12-bit DAC output channels, low-power sample and hold |
| Timers | 16 timers: 2x 32-bit, 9x 16-bit general purpose, 2x 16-bit low-power timers |
| Communication Interfaces | USB OTG 2.0 full-speed, 4x I2C, 3x SPI, 5x U(S)ARTs, 2x CANs, SDMMC |
| Security Features | AES (128/256-bit key), HASH (SHA-256), readout protection, write protection, proprietary code readout protection, Firewall |
| Power Modes | VBAT mode: 320 nA, Shutdown mode: 25 nA, Standby mode: 108 nA, Stop 2 mode: 2.57 µA |
Key Features
- Ultra-low-power with FlexPowerControl and multiple power-saving modes
- Includes ST state-of-the-art patented technology
- Dedicated Chrom-ART Accelerator for enhanced graphic content creation (DMA2D)
- 8- to 14-bit camera interface up to 32 MHz (black & white) or 10 MHz (color)
- Encryption hardware accelerator: AES (128/256-bit key), HASH (SHA-256)
- Rich analog peripherals: 3x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, 2x ultra-low-power comparators
- Up to 24 capacitive sensing channels: support touchkey, linear and rotary touch sensors
- 20x communication interfaces including USB OTG, I2C, SPI, USART, CAN, and SDMMC
- True random number generator, CRC calculation unit, 96-bit unique ID
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
- Low-power IoT devices and smart sensors
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Automotive systems, especially those needing advanced security features
- Consumer electronics such as wearables and smart home devices
- Energy metering and monitoring systems
Q & A
- What is the core architecture of the STM32L4A6ZGT6?
The STM32L4A6ZGT6 is based on the Arm® 32-bit Cortex®-M4 CPU with a Floating Point Unit (FPU), operating at up to 80 MHz.
- What are the memory specifications of the STM32L4A6ZGT6?
The device features 1 MB of flash memory and 320 KB of SRAM, including 64 KB with hardware parity check.
- What is the power supply range for the STM32L4A6ZGT6?
The power supply range is from 1.71 V to 3.6 V (internal LDO) and 1.05 V to 1.32 V (external SMPS).
- What are the temperature operating ranges for the STM32L4A6ZGT6?
The device operates in the -40 °C to 85 °C / 125 °C temperature range.
- What are the key analog peripherals of the STM32L4A6ZGT6?
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 STM32L4A6ZGT6?
The device features USB OTG 2.0 full-speed, 4x I2C, 3x SPI, 5x U(S)ARTs, 2x CANs, and SDMMC.
- What security features are integrated into the STM32L4A6ZGT6?
The device includes AES (128/256-bit key), HASH (SHA-256), readout protection, write protection, proprietary code readout protection, and Firewall.
- What are the power modes and their respective current consumptions for the STM32L4A6ZGT6?
The device has VBAT mode: 320 nA, Shutdown mode: 25 nA, Standby mode: 108 nA, and Stop 2 mode: 2.57 µA.
- What development tools and interfaces are supported by the STM32L4A6ZGT6?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™.
- What are some typical applications for the STM32L4A6ZGT6?
Typical applications include low-power IoT devices, industrial automation, medical devices, automotive systems, consumer electronics, and energy metering systems.
- How does the STM32L4A6ZGT6 support capacitive sensing?
The device supports up to 24 capacitive sensing channels for touchkey, linear, and rotary touch sensors.
