SBOU024C august 2004 – july 2023 PGA309
If at any time the PGA309 detects an invalid Checksum1 from the first part of the EEPROM, the PGA309 will disable VOUT, wait for approximately 33ms, and try to read the EEPROM again from the beginning. It will continue to reread the EEPROM indefinitely.
If at any time the PGA309 detects an invalid Checksum2 from the second part of the EEPROM (the Lookup Table data), it will disable VOUT, set the Gain and Zero DACs to their POR values, return to the read configuration register portion (first part of the EEPROM) of the loop, and then try to read the EEPROM Lookup Table again when the next temperature conversion completes.