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RTC (PCF8563A) and EEPROM (24L01BT-SN) is not working if connected to I2C

Discussion created by Internet search on Jan 19, 2017
  1. after writing RTC i am unable to read it back.
  2. if i put write command to eeprom after RTC write then  i am able to read back the RTC  
  3. i am using RL78 D1A controller EEPROM and RTC communicating on I2C