A radio frequency identification (RFID) transponder (tag) integrated circuit includes "on-chip" test circuitry. The test circuitry includes a serially-loaded test register. The test register controls the execution of on-chip tests. Such tests may include the testing of EEPROM circuitry included within...http://www.google.com.hk/patents/US6412086?utm_source=gb-gplus-share專利 US6412086 - Radio frequency identification transponder integrated circuit having a serially loaded test mode register
