[aprssig] 27C256
scott at opentrac.org
scott at opentrac.org
Thu Mar 2 17:41:14 EST 2006
There may be some variations in programming voltage among different versions. Different access speeds, too. You can get one-time programmable chips (no window) significantly cheaper than the eraseable type, too.
If it's for UIDIGI, I just need the configuration file (or better yet, the finished binary) and a shipping address and I'll send them free (one-time programmable chips). A few of us are subsidizing this offer to help get the digipeater network upgraded.
In fact, I just added a coupon code so you can order online at http://www.argentdata.com/catalog/product_info.php?cPath=24&products_id=24. Coupon code is UIDIGI. It might only apply it once per order, though.
Scott
N1VG
----- Original Message -----
From: Fred Atkinson <fred at wb4aej.com>
To: TAPR APRS <aprssig at lists.tapr.org>
Sent: Thu, 2 Mar 2006 13:34:56 -0800
Subject: [aprssig] 27C256
> I have an MFJ-1270B Turbo TNC. I have access to an EPROM burner. However,
> I need to round up somw 27C256 EPROMs to burn the UIDIGI code into.
>
> I notice that 27C256s are being sold in small lots on Ebay.
>
> Is there anything I should be sure of before purchasing them? I don't know
> a lot about EPROMs, but I do remember what I learned about TTL in school. There
> are variants of TTL out there and you need to get the right one in some cases.
> I'm just covering base here.
>
> Regards,
>
>
>
> Fred
>
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