Overview
The STM32L496QEI6TR 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 microcontroller is designed for low-power applications, offering various power-saving modes and a wide range of peripherals and interfaces. It is suitable for applications requiring high performance, low power consumption, and advanced features such as encryption hardware accelerators and rich analog peripherals.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz |
| Memories | Up to 1 MB Flash, 320 KB 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 85/125 °C |
| ADCs | Up to three 12-bit ADCs, 5 Msps |
| DACs | Two 12-bit DAC output channels |
| Timers | Two 32-bit timers, nine 16-bit timers, two low-power 16-bit timers |
| Communication Interfaces | USB OTG 2.0 full-speed, four I2Cs, three SPIs, three USARTs, two UARTs, two CANs, SDMMC |
| Package | UFBGA 132 (7x7x0.6 mm), LQFP144, UFBGA169, WLCSP100, LQFP100, LQFP64, WLCSP115 |
Key Features
- Ultra-low-power with FlexPowerControl, supporting various power-saving modes (VBAT, Shutdown, Standby, Stop 2)
- High-speed memories: up to 1 MB Flash, 320 KB SRAM, external memory controller for static memories
- Rich analog peripherals: three 12-bit ADCs, two 12-bit DACs, two operational amplifiers, two ultra-low-power comparators
- Advanced communication interfaces: USB OTG 2.0 full-speed, four I2Cs, three SPIs, three USARTs, two UARTs, two CANs, SDMMC
- Integrated LCD driver 8x40 or 4x44 with internal step-up converter
- Up to 24 capacitive sensing channels and four digital filters for sigma delta modulators
- Encryption hardware accelerator: HASH (SHA-256)
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
Applications
The STM32L496QEI6TR is versatile and can be used in a variety of applications, including:
- Industrial automation and control systems
- Medical devices requiring low power consumption and high performance
- Consumer electronics such as smart home devices and wearables
- Automotive systems, especially those requiring advanced communication interfaces and low power modes
- IoT devices that need efficient power management and robust security features
Q & A
- What is the core architecture of the STM32L496QEI6TR?
The STM32L496QEI6TR 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 power supply options for this microcontroller?
The device can operate from a 1.71 V to 3.6 V power supply using the internal LDO regulator, or from 1.05 to 1.32 V using an external SMPS supply.
- What are the key power-saving modes available?
The device supports VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode, among others, to minimize power consumption.
- What types of memories are available on this microcontroller?
The STM32L496QEI6TR features up to 1 MB of Flash memory and 320 KB of SRAM, including external memory interfaces for static memories.
- What are the main communication interfaces available?
The device includes USB OTG 2.0 full-speed, four I2Cs, three SPIs, three USARTs, two UARTs, two CANs, and an SDMMC interface.
- Does the microcontroller support any encryption hardware accelerators?
Yes, it includes a HASH hardware accelerator (SHA-256) for enhanced security.
- What types of analog peripherals are available?
The device features three 12-bit ADCs, two 12-bit DACs, two operational amplifiers, and two ultra-low-power comparators.
- Can the microcontroller support capacitive sensing?
Yes, it supports up to 24 capacitive sensing channels and includes four digital filters for sigma delta modulators.
- What development tools are supported?
The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™ for development and debugging.
- What is the temperature range for this microcontroller?
The device operates in the -40 °C to 85/125 °C temperature range.
