MCUmall EPROM BIOS Chip Burner Forum - Fail to write M2716 on GQ-4x4

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Fail to write M2716 on GQ-4x4

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MannyTC

USA
3 Posts

Posted - 01/22/2018 : 21:59:33

Am new to the GQ-4x4 and am having difficulty writing to a ST M2716. The writing seems to fail almost immediately. I am using an external power supply of 9v rated at 850mA. The eprom says 21V Fast on it but looking at the specsheet of M2716-1F1 from ST it says it is 25V. I first tried at 21V and then at 25V with the same results. I see lots of posts with 2716 issues but it seems others are able to write fine.

Is there anything you all suggest I check? I suppose it could be a bad eprom too since I received it pre-installed in a project kit I purchased that was programmed by the seller and it didn't work out of the box. When I read the eprom in with the GQ-4x4 it was almost all FF so either he didn't write it successfully or something happened during shipping. It does erase successfully when I put in eraser and then run a blank check.

MannyTC

Reply #1

anniel

2572 Posts

Posted - 01/23/2018 : 06:26:19

quote:
Originally posted by MannyTC

Am new to the GQ-4x4 and am having difficulty writing to a ST M2716. The writing seems to fail almost immediately. I am using an external power supply of 9v rated at 850mA. The eprom says 21V Fast on it but looking at the specsheet of M2716-1F1 from ST it says it is 25V. I first tried at 21V and then at 25V with the same results. I see lots of posts with 2716 issues but it seems others are able to write fine.

Is there anything you all suggest I check? I suppose it could be a bad eprom too since I received it pre-installed in a project kit I purchased that was programmed by the seller and it didn't work out of the box. When I read the eprom in with the GQ-4x4 it was almost all FF so either he didn't write it successfully or something happened during shipping. It does erase successfully when I put in eraser and then run a blank check.

Try a lower speed.