GreenPAK™ GPIO Expander Demonstration Board
The SLG4IOEXP-DMO is a GPIO expander demonstration board. Many programmable mixed-signal products include an I2C block which makes these components perfect for a GPIO...
Choosing GreenPAK™ at the very beginning of your project is a perfect decision to avoid unforeseen issues from the start. Choosing an MCU with the exact right amount of IO at the beginning of a project may be difficult as new requirements often creep in and some unforeseen engineering challenges occur during development. Adding differentiation to your project can be challenging as well since most MCUs available are available to everyone.
Many new GreenPAK devices include an I2C block which makes these components perfect for an ideal GPIO expander allowing you to add new features, logic, timing, and sensing to already highly integrated designs.
Using GreenPAK's I2C block allows for easy expansion of both input and output. With simple I2C commands the matrix input of each component on the chip, including the GPIO, can be read, expanding input. With simple I2C write commands, I2C virtual inputs can push digital signals into the device or directly to GPIO.
GreenPAK can often implement multiple functions in one small device. This isn’t limited to GPIO expansion applications. Just one GreenPAK device can implement glue logic, timing adjustment, reset, power sequencing, LED control, and more depending on design requirements and resource configuration.
All of GreenPAK 5 devices contain the needed I2C block for GPIO expansion and are only limited by the number of pins. Below is a chart of the maximum number of direct inputs or outputs achievable for each member of the family.
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