City Union Bank Ltd branches in Periyakulam: Get the list of City Union Bank Ltd MICR codes in Periyakulam which are made available by Branch. Periyakulam MICR code is a character-recognition technology used mainly by the banking industry to ease the processing and clearance of cheques and other documents. Periyakulam MICR code has 9 digits first three digits are Periyakulam City Code, second three digits are Periyakulam bank code and last three are Periyakulam branch code.