Overview
The STM32L4A6ZGT6P 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 STM32L4A6ZGT6P is part of the STM32L4A6xG family, which is designed for low-power applications, offering various power-saving modes and a comprehensive set of peripherals and interfaces.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memory | 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 (+105 °C junction), -40 °C to +125 °C (+130 °C junction) |
| 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 |
| ADCs | Up to 3 fast 12-bit ADCs (5 Msps) |
| DACs | 2x 12-bit DAC output channels |
| Communication Interfaces | USB OTG 2.0 full-speed, 4x I2C, 3x SPI, 5x USART, 2x CAN, SDMMC, SWPMI |
| Package | 144-pin LQFP |
| Power Modes | Shutdown (25 nA), Standby (108 nA), Stop 2 (2.57 µA), Run mode (91 µA/MHz LDO, 37 µA/MHz SMPS) |
Key Features
- Ultra-low-power consumption with FlexPowerControl
- Arm® Cortex®-M4 core with FPU, Adaptive real-time accelerator (ART Accelerator™), and DSP instructions
- Memory protection unit (MPU) for enhanced security
- High-speed memories: 1 MB flash, 320 KB SRAM
- External memory interface for static memories (SRAM, PSRAM, NOR, NAND)
- Dual-flash Quad SPI memory interface
- Rich analog peripherals: 3x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, 2x ultra-low-power comparators
- Advanced communication interfaces: USB OTG 2.0, I2C, SPI, USART, CAN, SDMMC, SWPMI
- Encryption hardware accelerators: AES (128/256-bit key), HASH (SHA-256)
- Dedicated Chrom-ART Accelerator for enhanced graphic content creation (DMA2D)
- Up to 24 capacitive sensing channels and integrated LCD driver
- Low-power RTC with HW calendar, alarms, and calibration
Applications
- Low-power IoT devices and wearables
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as smart home devices and audio equipment
- Automotive systems, including infotainment and driver assistance
- Smart meters and energy management systems
Q & A
- What is the core architecture of the STM32L4A6ZGT6P?
The core 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 STM32L4A6ZGT6P?
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 STM32L4A6ZGT6P?
The device operates from 1.71 V to 3.6 V using the internal LDO regulator, and from 1.05 V to 1.32 V using an external SMPS supply.
- What are the key power-saving modes of the STM32L4A6ZGT6P?
The device offers Shutdown (25 nA), Standby (108 nA), Stop 2 (2.57 µA), and Run mode (91 µA/MHz LDO, 37 µA/MHz SMPS).
- What communication interfaces are available on the STM32L4A6ZGT6P?
The device includes USB OTG 2.0, I2C, SPI, USART, CAN, SDMMC, and SWPMI interfaces.
- Does the STM32L4A6ZGT6P support encryption?
Yes, it includes hardware accelerators for AES (128/256-bit key) and HASH (SHA-256).
- What is the temperature range for the STM32L4A6ZGT6P?
The device operates in the -40 °C to +85 °C (+105 °C junction) and -40 °C to +125 °C (+130 °C junction) temperature ranges.
- What are the key analog peripherals of the STM32L4A6ZGT6P?
The device features 3x 12-bit ADCs, 2x 12-bit DACs, 2x operational amplifiers, and 2x ultra-low-power comparators.
- Does the STM32L4A6ZGT6P support capacitive sensing?
Yes, it supports up to 24 capacitive sensing channels.
- What is the package type of the STM32L4A6ZGT6P?
The device is available in a 144-pin LQFP package.
