MCUmall EPROM BIOS Chip Burner Forum
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 3.3V DIP32 EPROM ? Do you know one?

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T O P I C    R E V I E W
MCU-Matt Posted - 01/29/2011 : 16:11:09
Hi,

I have spend days searching for a DIP32 E/EPROM or FLASH that meets
the following specs:
3.3V, DIP32 / DIL32

Can you point me to one that actually can be purchased?

There is nothing in production that I can see. Almost all is 5V or
PLCC32 for 3.3V.

I have some NICs that use DIP32 for boot prom but are 3.3V - I have no idea why they would design it that way, but hey - what can you do.

Any recommendations welcome.

Matt
4   L A T E S T    R E P L I E S    (Newest First)
Bad_Ad84 Posted - 03/07/2011 : 06:38:17
chip

120ns
AT49BV512-12PC
AT49BV512-12PI

150ns
AT49BV512-15PC
AT49BV512-15PI

32 pin dip, 3v 512kb

Found on a NIC I was just replacing and thought of this post.
Bad_Ad84 Posted - 02/21/2011 : 01:57:52
If you have no luck, just buy the PLCC32 and use an adapter.

Something like:
hxxp://cgi.ebay.co.uk/PLCC32-PLCC-32-DIP32-Adapter-Universal-Xeltek-UP48-/360342965579?pt=LH_DefaultDomain_0&hash=item53e61d4d4b#ht_2688wt_1026
MCU-Matt Posted - 02/15/2011 : 20:19:04
Sure for programming it is the programmer. But for normal operation it is for example the NIC controller (e.g. Realtec RTL8139C) which uses a 3.3V boot PROM/FLASH/EEPROM.

In cases like that the VCC is actually 3.3V not 5V. This becomes more and more common. And in one NIC I actually have a DIP EPROM socket that is 3.3V powered - escapes me why anyone would design it that way in the first place - maybe because the DIP sockets are cheaper than the PLCC.

The real problem here is that there are no DIP FLASH/PROM/EPROM/EEPROMs I could find.

Matt
ZLM Posted - 02/01/2011 : 11:41:52
the voltage should be controlled by programmer, not the adapter. If your chip is DIP chip, then you do not need the adapter.

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