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10 years, 3 months ago.
IO expander IC for additional Interrupt
ANybody can suggest me a gpio expander chip that can provide me interrupt peripherals
1 Answer
10 years, 3 months ago.
I2C expanders such as PCF8574 and MCP23008 support interrupt out pins that trigger on level changes on one or more pins.
Accepted Answer
A quick look at their datasheets indicates that both support both rising and falling edge sensitive interrupts.
http://www.nxp.com/documents/data_sheet/PCF8574.pdf http://ww1.microchip.com/downloads/en/DeviceDoc/21919e.pdf
posted by 12 Sep 2014