KM28C64A fails programming, also AT28C64 fails

Both chips fail, random errors in programming, they are good EPROMs. Logs attached.

P_log.zip (330 Bytes)

P_log2.zip (339 Bytes)

Rank: 9 Rank: 9 Rank: 9

6^#

admin发表于 2023-3-20 13:55 | 只看该作者

回复 4# stevemas
all are normal.

Rank: 9 Rank: 9 Rank: 9

5^#

admin发表于 2023-3-19 17:56 | 只看该作者

回复 4# stevemas

I have tested the AT28C64B and there is no problem. I will find several chips to try。

Rank: 1

4^#

stevemas发表于 2023-3-19 06:55 | 只看该作者

Still does not work.[attach] [attach] 1719[/attach] 1719[/attach]

P_log4.zip (336 Bytes)

Rank: 9 Rank: 9 Rank: 9

3^#

admin发表于 2023-3-17 15:30 | 只看该作者

回复 2# stevemas

select IC: AT28C64, not AT28C64E.
they have diffrent page size when programming.
error on adaddress: 0x00080 and 0x00040

Rank: 1

2^#

stevemas发表于 2023-3-17 09:14 | 只看该作者

Reply 1# stevemas

I'm just going to return it, it doesn't work for 8k EEPROMS.