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12 years ago.
How do I get more input IOs?
Hi,
I'm new to mbed and thinking of using it for a prototype I'm building.
The thing is I need more input IOs in my project and was wondering if there is a simple solution?
I would like to see an IC with multiple inputs/outputs that connects through SPI/I2C and sends messages on IO changes. I need around 60 input IOs which rarely change.
This is a better solution than using a mux in my opinion.
Any ideas?
1 Answer
12 years ago.
IO expander is the search term you are looking for. There are many different ones, both for I2C and SPI (in that case it is essentially just a shiftregister), and also with interrupt output included they exist.