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ATmega328P Low-Power Arduino Compatible Controller Board

SKU: DFR0343

μHex is the first Arduino-compatible low-power controller, ideal for battery setups—a 210mAh CR2032 supports 60-day standby with PIR sensor SEN0171. Using Atmega 328, it has 14 GPIO & 7 power ports (4 controllable) for most projects.

Front of μHex low power controller with gold pins and black circuitry.-DFRobot product sku:DFR0343 image.

Downloadable Resources

  • Docs
  • Tech Specs

    • Specification

    Parameter Details
    Microcontroller ATmega328P （board type: Arduino Pro or Pro Mini (3.3V, 8 MHz) w/ ATmega328）
    Operating Voltage 2.7 - 5V
    Clock Frequency 8MHz （RC）
    Sleep Current 0.12uA@3V3， 0.16uA@5V （watchdog OFF）
    Flash 32 KB （ 0.5KB used by bootloader)
    SRAM 2 KB
    EEPROM 1 KB
    Digital I/O Pins 14 (PWM: 3,5,9,10,11)
    Analog I/O Pins 6
    UART Interface 1
    I2C Interface 1
    Interrupt interface 2
    Power in Port 1
    Power out Port 6 (4 of them are controllable power port)
    Maximum Current from Controllable Power out 2A
    Dimension 28 x 31 x 2.3 (mm)
    Weight 10g

    Pinout

    uhex pinout

    Silk-screen Digital Interface PWM Interface Analog Interface Proprietary Function
    RX 0 Serial
    TX 1
    2 2 INT0
    3 3 3 INT1
    5 5 5
    9 9 9
    10 10 10
    11 11 11
    A0 A0 A0
    A1 A1 A1
    A2 A2 A2
    A3 A3 A3
    SDA SDA A4 I2C
    SCL SCL A5
    DTR DTR
    + VCC
    - GND
    ⊕ Controllable power port

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