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标题: KM28C64A fails programming, also AT28C64 fails [打印本页]

作者: stevemas 时间: 2023-3-16 11:06 标题: KM28C64A fails programming, also AT28C64 fails

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

附件: P_log.zip (2023-3-16 11:06, 330 Bytes) / 下载次数 21269
http://forums.xgecu.com/attachment.php?aid=1716&k=ebcb685e8b8f6a0c73f7e7ba086f778f&t=1752511729&sid=UZLja5

附件: P_log2.zip (2023-3-16 11:06, 339 Bytes) / 下载次数 21237
http://forums.xgecu.com/attachment.php?aid=1717&k=d8bfc22b2642dd99f96468f9dc768c0a&t=1752511729&sid=UZLja5

作者: stevemas 时间: 2023-3-17 09:14

Reply 1# stevemas

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

作者: admin 时间: 2023-3-17 15:30

回复 2# stevemas

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

作者: stevemas 时间: 2023-3-19 06:55

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

附件: P_log4.zip (2023-3-19 06:54, 336 Bytes) / 下载次数 21168
http://forums.xgecu.com/attachment.php?aid=1719&k=0dea25be9822cd8fce4bd4ae12fa7562&t=1752511729&sid=UZLja5

作者: admin 时间: 2023-3-19 17:56

回复 4# stevemas

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

作者: admin 时间: 2023-3-20 13:55

回复 4# stevemas
all are normal.

图片附件: 28c64.JPG (2023-3-20 13:53, 96.87 KB) / 下载次数 12522
http://forums.xgecu.com/attachment.php?aid=1726&k=49b32d95c902c2f1d46095b7816a0d17&t=1752511729&sid=UZLja5

图片附件: 28c64-2.JPG (2023-3-20 13:55, 132.12 KB) / 下载次数 12656
http://forums.xgecu.com/attachment.php?aid=1727&k=7ea0709cacdb0d7eb55063782633896a&t=1752511729&sid=UZLja5

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