Datasheet

7.8. Instructions for Burning the EPROM
Once in production the configuration settings will be burned into the EPROM at the factory. Sample units will not
have the configuration information saved in EPROM. This can be verified by reading register 72h. The low four bits
will read back as 0000b if the configuration portion of the EPROM has not been burned. A successfully burned
configuration EPROM will read back as 0Fh.
Once a configuration is set it can be burned to the EPROM. First program all of the CFG registers to their desired
value. A write of value 80h is written to register 72h. This sets the write bit. The voltage applied to the VLDO pin
is increased to 6V. Another write of 00h to 72h is needed to complete the write process. The VLDO pin can be
returned to nominal voltage. Then a read of register 72h should be 0Fh to indicate a successful burn.