I2CIO-8X

Features

• 8 bits of Digital I/O
• I2C interface
• MCP23008P
• Base address = 0x20
• Address offset jumpers (0-7)
• Interrupt pin on I2C connectors
• I2C Daisy-chain connectors
• GVS (Ground/Voltage/Signal) pins for all 8-bits
• 2.7V to 5.5V
• 49x49mm form factor
• (4) #4-40 mounting holes

Drivers/Example Code

• Github repo - Driver code
• Github repo - Example code

Factory Acceptance Test

Test Station Theory of Operations

• Test Station controls the I2C interface on the UUT
• Three tests
  • Internal Test
  • External Loopback Test
  • Bounce an LED Test

Test Station Set-up

• Uses ODAS Test Station V2
• Ribbon cable sets
  • Loopback cable Connector
  • LED-32 cable
• Unit Under Test (UUT)
• Attach Host Computer USB to the Arduino NANO on the Test Station
• Run puTTY on the Host Computer
  • 9600 baud

Running Loopback Card Test

• Use loopback cable
• Select Card Tests = "C"
• Select Run Tests = "T"
• Observe test results

Running Internal Tests

• Remove loopback cable
• Select Card Tests = "C"
• Select Run Tests = "I"
• Observe test results

Running Blink LED Test

• Attach LED-32 cable
• Select Card Tests = "C"
• Select Run Tests = "B"
• Observe LEDs scanning in LED-32

Reference

• Arduino Based Test Station
• ODAS Tester Github Repo

Assembly Sheet

• I2CIO8-X Assembly Sheet