Help me please with TMS87C510 eprom
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Topic URL: http://www.mcumall.com/forum/topic.asp?TOPIC_ID=6102
Printed on: 05/01/2024
Topic:
Topic author: uferi
Subject: Help me please with TMS87C510 eprom Dear forum members/moderator,
Replies:
Posted on: 09/22/2014 05:24:54
Message:
I need your help, I'm fighting with this chip type which exist in the GQ-4X device list, but that need adapter(ADP-063 V2.0). I already ordered that but I will get to late for the current urgent project.
So my request is the next: please check with a multimeter the connection between the pins marked with red (control signals) and the adapter pins. Please note them, and also please draw a wiring sketch with the connection of the components from the adapter PCB (I'm sure they are connected on the control signal for inverting a signal for example). The rest of the signals (Data/scriptddress/Power/Vpp) I already fixed, I have problem with the marked pins.
Thank you in advance, best regards,
Feri
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Reply author: uferi
Replied on: 09/23/2014 21:40:06
Message:
Dear forum members,
the chip reading now is working but the writing isn't, that fail at the byte verify (SNAP I programming method).
Probably I have a problem at chip enable or output enable signal applied on the eprom.
The current wiring built by me is attached in the second picture.
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Best regards,
Feri
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