topic MC9S12DJ128CFUE EEPROM cannot work in S12 / MagniV Microcontrollers https://community.nxp.com/t5/S12-MagniV-Microcontrollers/MC9S12DJ128CFUE-EEPROM-cannot-work/m-p/1080359#M17327 <HTML><HEAD></HEAD><BODY><P>We use MC9S12DJ128CFUE a lot of years. Recently we find some MCUs have problem.&nbsp;&nbsp;</P><P><SPAN style="color: #1f497d;">We have made some detailed investigation of the problem.</SPAN><SPAN style="color: #1f497d;">Here is a summary of the faulty MCUs…</SPAN></P><P><SPAN style="color: #1f497d;">&nbsp;</SPAN>* programming (flashing) MCU takes a little longer than a good chip<BR /> * EEPROM module does not work (cannot save settings) when chip is secure<BR /> * EEPROM module only works when chip is unsecure (FSEC = 0xFE)<BR /> * <SPAN style="color: red;">MCU reports PARTID = 0x0100, which not listed in data sheet</SPAN><BR /> * All are 2017 batches (xx17xx) but this is <STRONG>*not*</STRONG> an indication of pass/fail<BR /> * <SPAN style="color: red;">some chips with same xx17xx batch number (outside) report different PARTID (inside)</SPAN></P><P><SPAN style="font-size: 11.0pt; color: #1f497d;">The PARTID mentioned above is the identification read from inside the chip.</SPAN></P><P></P><P><SPAN style="font-size: 11.0pt; color: #1f497d;">Can you tell me what's the problem?</SPAN></P><P></P><P><SPAN style="font-size: 11.0pt; color: #1f497d;">Best Regards,</SPAN></P><P><SPAN style="font-size: 11.0pt; color: #1f497d;">KY Chang</SPAN></P></BODY></HTML> Wed, 27 May 2020 10:09:24 GMT kychang 2020-05-27T10:09:24Z MC9S12DJ128CFUE EEPROM cannot work https://community.nxp.com/t5/S12-MagniV-Microcontrollers/MC9S12DJ128CFUE-EEPROM-cannot-work/m-p/1080359#M17327 <HTML><HEAD></HEAD><BODY><P>We use MC9S12DJ128CFUE a lot of years. Recently we find some MCUs have problem.&nbsp;&nbsp;</P><P><SPAN style="color: #1f497d;">We have made some detailed investigation of the problem.</SPAN><SPAN style="color: #1f497d;">Here is a summary of the faulty MCUs…</SPAN></P><P><SPAN style="color: #1f497d;">&nbsp;</SPAN>* programming (flashing) MCU takes a little longer than a good chip<BR /> * EEPROM module does not work (cannot save settings) when chip is secure<BR /> * EEPROM module only works when chip is unsecure (FSEC = 0xFE)<BR /> * <SPAN style="color: red;">MCU reports PARTID = 0x0100, which not listed in data sheet</SPAN><BR /> * All are 2017 batches (xx17xx) but this is <STRONG>*not*</STRONG> an indication of pass/fail<BR /> * <SPAN style="color: red;">some chips with same xx17xx batch number (outside) report different PARTID (inside)</SPAN></P><P><SPAN style="font-size: 11.0pt; color: #1f497d;">The PARTID mentioned above is the identification read from inside the chip.</SPAN></P><P></P><P><SPAN style="font-size: 11.0pt; color: #1f497d;">Can you tell me what's the problem?</SPAN></P><P></P><P><SPAN style="font-size: 11.0pt; color: #1f497d;">Best Regards,</SPAN></P><P><SPAN style="font-size: 11.0pt; color: #1f497d;">KY Chang</SPAN></P></BODY></HTML> Wed, 27 May 2020 10:09:24 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/MC9S12DJ128CFUE-EEPROM-cannot-work/m-p/1080359#M17327 kychang 2020-05-27T10:09:24Z