Best would be to use the PSoC5 internal EEProm, not emulated. Specs are in datasheet.
to save some data or settings in EEPROM you can use this component, which handles access to EEPOM and has some options
Optional Wear Leveling is supported in latest Em_EEPROM 2.0. This version will be supported from PSoC Creator 4.2. For characteristics, refer to Flash DC Specifications and Flash AC Specifications in the specific device datasheet.