We would like to request for FA

Hi, Refer below: 1. Please provide full device details. 1.1. Device name: IC 1.695M-bit EEPROM CMOS 20-PLCC 1.2. Full part number: AE1818-7675LF 2. What is the failure rate? What is the failure rate vs. tested sample? Example: 2 out of 100 units. - 7 / 246 3. What is the failure symptom? Please elaborate the failure symptom in detail. - Test program aborted due to E8251-60666 failed at Store Module Eeprom. [cid:[email protected]][cid:[email protected]] 4. When did the failure happen? How did you discover the failure? - The failure happen while perform Download Firmware. - The test program shown E8251-60666 “Eeprom header read from UUT does NOT match header written to UUT. 5. How did you determine the failure? Please elaborate the procedures. - Refer to the schematic, U101 is the configuration Eeprom. - We have perform measurement VOLTAGE for U101, good vs bad. [cid:[email protected]] U101 Measurement Voltage (V) No U101 GOOD BAD 1 Pin 1 3.35v 3.30v 2 Pin 2 3.38v 3.30v 3 Pin 3 0 0 4 Pin 4 0 0 5 Pin 5 3.26v 3.30v 6 Pin 6 0 0 7 Pin 7 0 0 8 Pin 8 3.30v 0.035v 9 Pin 9 3.30v 0.035v 10 Pin 10 0 0 11 Pin 11 2.8v 2.79v 12 Pin 12 3.26v 3.30v 13 Pin 13 3.30v 3.30v 14 Pin 14 3.30v 3.30v 15 Pin 15 0 0 16 Pin 16 0 0 17 Pin 17 0 0 18 Pin 18 3.30v 3.30v 19 Pin 19 3.30v 3.30v 20 Pin 20 3.30v 3.30v 6. Does the failure unit ever working before failure? No 7. Did they violate solder re-flow temperature profiles, moisture sensitivity? No 8. Did you swap the failure device to a known good board? Is the failure following the device or board? We have done swapping experiment, the failure is following device. Thank you. Regards, Nabilah