The Meadow F7 is a workhorse Wi-Fi and Bluetooth enabled System-on-Module (SoM) microcontroller-based board designed for sophisticated IoT applications and is based on the STMicroelectronics STM32F7 microcontroller (MCU) with an Espressif ESP-32 coprocessor.

The Meadow F7 is provisioned with Meadow.OS which runs full .NET Standard v2.1 applications and can be managed remotely via Meadow.Cloud with secure, over-the-air (OtA) updates, reliable push messaging, and device and application health monitoring over a Wi-Fi or ethernet (F7 Production model only) network.

Form-Factors

The Meadow F7v2 System-on-Module (SoM) is available in two models, based on two differing form factors:

  • Meadow F7v2 Micro Development Module - An Adafruit Feather specification compatible design, intended for development, prototyping, and low-volume (1,000 or less) production.
  • Meadow F7v2 Core-Compute Module - A surface mount device (SMD) intended for high-volume and industrial production, the F7 Production also adds Ethernet and SD card capabilities.

F7v2 Features

  • Fully Surface Mount Technology (SMT) compatible. Both modules can be used in SMD designs without the need for through-hole (PTH) soldering.
  • STMicroelectronics STM32F7 32-bit ARM Cortex-M7 based core MCU at up to 216MHz
    • 2MB internal Flash memory
    • 412Kb internal RAM
    • 2D Graphics Acceleration (DMA2D) via ST Chrom-ART Accelerator
    • Internal, low-power realtime clock (RTC)
    • Cryptographic Hardware Acceleration for AES 128, 192, 256, triple DES, HASH (MD5, SHA-1, SHA-2), and HMAC True random number generator Floating point unit (FPU) Secure Boot secure, encrypted firmware loader
  • Espressif ESP32 (ESP-Pico-D4) Xtensa 32-bit dual-core LX6 up to 240MHz coprocessor.
    • 2.4GHz WiFi 802.11 b/g/n with WFA, WPA/WPA2 and WAPI
    • Bluetooth 4.2, 5.1
  • 32MB external, onboard QSPI RAM
  • 64MB external, onboard non-volatile Flash memory (60MB available for user code)
  • 25 Mixed Signal IO ports (6/8x Analog, 12x PWM, 3x UART, I2C, SPI, CAN, 2x DAC)
  • On-board 2.4GHz ceramic chip antenna
  • U.FL external antenna connector
  • RoHS compliant (lead and hazardous materials-free)

Meadow F7v2 Micro Features

The Meadow F7 Micro model has additional onboard features designed to make developing and prototyping easier.

  • Reset and Boot buttons
  • Onboard user-accessible RGB LED
  • Micro USB 3.0 with USB On-the-Go (OTG)
  • Integrated 3.7V LiPo/LiIon battery charging and JST-PH 2-pin battery connector
  • Can be powered via standard USB, or 5V/3V3 rails
  • Integrated switching power supply capable of providing 800mA when powered from USB or 5V rail
  • SMT and PTH compatible

Meadow F7v2 Core-Compute Features

The Meadow F7 Core-Compute model is designed to be an easy upgrade path to production volume solution, or for when Ethernet and an external SD card interface is required.

  • Ultra-small Surface Mount Device (SMD) form factor.
  • External SD Card interface
  • Dual-Port External Ethernet interface

 


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