STM32L476QEI6

STM32L476QEI6 is a low‑power 32‑bit MCU from STMicroelectronics, in the STM32L4+ family, built around an ARM Cortex‑M4F core. It targets energy‑efficient industrial and IoT applications.
Key points
- Core and performance: Cortex‑M4F up to about 80 MHz, DSP and FPU for floating‑point math.
- Power: multiple run/low‑power modes, voltage range 1.65–3.6 V, optimized for very low sleep currents.
- Memory and package: industrial temperature variant in an LQFP100 package (QEI6); memory options vary by device variant (on‑chip flash and SRAM sized for typical mid‑ to high‑density applications).
- Peripherals: USB FS, CAN, multiple USART/UART, I2C, SPI, 12‑bit ADCs, DACs, analog comparators, op‑amps; multiple timers (including advanced TIMs), DMA; LCD controller for segment/TFT displays; cryptographic accelerators (AES/HASH/RNG) for security.
- Development: supported by STM32CubeIDE/CubeMX, ecosystem of middleware, examples, and ST’s extensive developer resources.
- Applications: energy‑efficient sensors, motor control, user interfaces with LCDs, secure IoT nodes, and portable/industrial devices.

Key features of STM32L476QEI6 (concise):
- 32‑bit ARM Cortex‑M4F core with DSP and single‑precision FPU; up to 80 MHz
- ART Accelerator for fast Flash access
- Memory: up to 1 MB Flash, up to 320 KB RAM
- Ultra‑low‑power design with multiple run/stop/sleep/standby modes; VBAT RTC
- Crypto and security: hardware AES/DES/HASH engine and RNG
- Connectivity: USB Full‑Speed device; multiple I2C, SPI, and USART/UART peripherals
- Analog: up to 16‑channel 12‑bit ADC; up to 2× 12‑bit DAC
- Timers: rich timer set (advanced/general‑purpose) for PWM and timing
- DMA, CRC, and debug interfaces
- Operating voltage: 1.65–3.6 V; temp range typically −40 °C to 85 °C (industrial) (some variants extend to 105 °C)
- Package: QEI6 variant
Note: exact peripheral counts and memory sizes vary by package; check datasheet for the specific device in your footprint.

LQFP-176 package (176‑pin thin quad flat package).

- Pin count: 100 pins (LQFP-100 package).
- Function: 32‑bit ARM Cortex‑M4 microcontroller (STM32L476 series) designed for low‑power embedded applications, with integrated memory and peripherals (GPIOs, timers, ADC/DAC, serial interfaces such as USART/SPI/I2C, USB, etc.).

- Manufacturer: STMicroelectronics (ST)
- What kind of company: A multinational electronics and semiconductor manufacturer headquartered in Geneva, Switzerland. It’s a leading global supplier of microcontrollers (STM32), sensors/MEMS, analog and power ICs.

- Low-power MCU for battery-powered and portable apps
- Motor control and encoder-based position/speed sensing (QEI)
- Wearables and sensors
- IoT edge devices and gateways
- Industrial automation and smart home
- Energy metering and power management
- Medical/portable instruments
- Human–machine interfaces (HMI) and displays