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VP990, verify DS1287 Reply

kruPL Hello, I have DS1287, VP990, fw19, soft 2013-08-08. I can read, compare, but I can"t verify chip. Sequence: read (ok), compare(ok), verify (fail) >>.Verify...... >>Device Address:0000003FH　Device Data:00H　Buffer Address:0000003FH　Buffer Data:FFH >>Verify fail! Go back list [ Posted:2013-08-14 18:02:58 ]

Re:VP990, verify DS1287 Reply

myx1 we have tested and it is ok. is there a verify fail after program? Go back list [ Posted:2013-08-20 15:05:24 ]

Re:VP990, verify DS1287 Reply

kruPL 1.Read chip: 00 00 00 00 01 01 01 01 01 01 7F 87 00 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 00 Address 3Fh or all area 10h-3Fh change -> FF or 55 2.AutoProgram/Program/verify ok! 3.Click compare ok 4.Click verify >Device Address:0000003FH Device Data:00H Buffer Address:0000003FH Buffer Data:55H >>Verify fail! 5.Read chip Last byte RAM always 00h Go back list [ Posted:2013-08-21 22:50:48 ]

Re:VP990, verify DS1287 Reply

myx1 Uaually this series of chips like DSxxx or M48xxx are Real Time Clock plus RAM,with lithium energy source. After AutoPrgoram is ok,read or verify again may cause the RAM data　 change.Cancel the Insertion Test is just avoided this situation. So when Prgoram ok,do not chick others.use it on board.Check the board work or not. But it must be sure the source files are right.Read from chip can not be reliable. Go back list [ Posted:2013-08-22 10:11:09 ]

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