Hi Lidou,
The LPC18xx contains the below features that you can use:
– One Fast-mode Plus I2C-bus interface with monitor mode and with open-drain I/O pins conforming to the full I2C-bus specification. Supports data rates of up to 1 Mbit/s.
– One standard I2C-bus interface with monitor mode and standard I/O pins.
However, it is possible to implement a GPIO to simulate I2C, but you need to create your own algorithm and change the pin configuration between output and input every time you need.
Have a nice day!
Have a great day,
Sol
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