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Mega-IO Home Expansion Card for Raspberry Pi

Mega-IO Home Expansion Card for Raspberry Pi
Only 9 left!
£ 30.00

Sequent Microsystems MEGA-IO is a stackable expansion card for Raspberry Pi B+, 2, 3 and Zero/W. The Mega-IO is packed with useful input/output ports to help you expand physical hardware interfacing on the Rasberry Pi / Pi Zero.

Two of the Raspberry Pi’s GPIO pins are used for I2C communication. Another pin is allocated for the interrupt handler, leaving 23 GPIO pins available for the user.

Up to four MEGA-IO cards can be stacked on top of a Raspberry Pi. Any of the inputs of the MEGA-IO can be configured as interrupt inputs.

MEGA-IO adds the following I/O functions:

  • Eight on-board relays
  • Eight 12 bit A/D inputs
  • Eight optically isolated inputs
  • One 12 bit DAC Output
  • Four open collector outputs
  • Six GPIO's

Technical Specifications:

    • Operating voltage: 3.3V
    • CPU frequency: 16 MHz
    • Touch sensing capability
    • Max. input voltage on any pin: 4V
    • Series protection resistor on IO pins: 51 Ohms
    • Output Low Level Voltage on I/O pins: Max. 0.45V
    • Output High Level Voltage on I/O pins: Min. 2.6V
    • Driver: ULN2003F12FN-7
    • Output Low Voltage: 0.6V
    • Max Pull Up Voltage: 20V
    • Max sink per channel: 100mA @ 3.3V Logic Input
    • 140mA @ 5.0V Logic Input
    • ESD: 4kV HBM, 1kV CDM
  • EIGHT 12 bit ADC
    • Sample rate: Up to 1 Msps
    • Input low pass filter: 0.22µF/51 Ohms
    • LED current limit resistor: 1 Kohm
    • Input Forward Current: Typ. 5 mA, Max 50 mA
    • Input Reverse Voltage: 5V
    • Input Forward Voltage: 1.25V @ 10 mA
    • Isolation Resistance: Min 10 exp(12) Ohms
    • Isolation Voltage: Typ 10,000 V
    • Relay max current/voltage: 10A/25V
    • PCB max current/voltage: 2.5A/24V
    • 60 mA @ +5V (all relays off)
    • 800 mA @ 5V (all relays on)


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