Plenty of 27C010 1 Megabit (128 K x 8-Bit) CMOS EPROM - 32 Pin DIP

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Par Stt1

Hero (603)

Portrait de Stt1

20-01-2015, 21:07

I have a lot (hundreds of them) of these chips available, they are UV-erasable.

If someone is interested in a batch, drop me a note, please. I will sell these a lot lower than the current Ebay-prices (around 1eur = 1 chip).

Wouldn't 1mbit be still quite good amount for MSX software...?

NOTE: I posted this here as this isn't exactly stuff for collecting, trading maybe, but at least developers might be interested in.

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Par flyguille

Prophet (3028)

Portrait de flyguille

20-01-2015, 23:01

Sounds interesting, but you know, flash memory exists.

But it is suitable for releasing a batch of new game cartridges, but then... the carts will be less interesting as it is not like mega flash rom, you know, used to burn another game... But, maybe it is suitable for a low low cost cart, but you know, the PCB & case & some glue logic is most the cost of it.

Par Grauw

Ascended (10565)

Portrait de Grauw

20-01-2015, 23:53

Uridium was released on EPROM.

Par ericb59

Paragon (1071)

Portrait de ericb59

21-01-2015, 07:08

I think eprom is a cool way to build Oldschool homebrew game cartridges.
first, it's retro...
second it's very reliable. Flash memory are not eternal, Flashing and reflashing them will finish by destroy them.
Also, memory can be erase by itself more or less after 10 years.

i'm not using 27c010.... 27c040 are cheaper and have bigger capacity.

Par Guillian

Prophet (3502)

Portrait de Guillian

21-01-2015, 09:44

ericb59 wrote:

second it's very reliable. Flash memory are not eternal, Flashing and reflashing them will finish by destroy them.

EPROMs are not eternal either.
Modern flashROM can be erased/rewriten about 1.000.000. The ones I'm using a minimum of 100.000. So they will fail in 273 years if you erase/rewrite them once per day. Probaly enough for must of us.
EPROM has an endurance of 1.000 erase/write cycles. A lot less than flashROM.
More info

ericb59 wrote:

Also, memory can be erase by itself more or less after 10 years.

That depends on the flashROM type. EPROM will loose its content also.
I.e.: Old PCs have its BIOS in old flashROMs and they are working after more than 20 years.
More info

Par Grauw

Ascended (10565)

Portrait de Grauw

21-01-2015, 10:04

Stt1 wrote:

I have a lot (hundreds of them) of these chips available, they are UV-erasable.

If someone is interested in a batch, drop me a note, please. I will sell these a lot lower than the current Ebay-prices (around 1eur = 1 chip).

Par gdx

Enlighted (5368)

Portrait de gdx

21-01-2015, 11:33

Guillian wrote:

EPROMs are not eternal either.
Modern flashROM can be erased/rewriten about 1.000.000. The ones I'm using a minimum of 100.000. So they will fail in 273 years if you erase/rewrite them once per day. Probaly enough for must of us.
EPROM has an endurance of 1.000 erase/write cycles. A lot less than flashROM.

The endurance cycles of an AT29C040 is around 10,000 but the problem is not here. Look for data retention in flashROM datasheets. You will be surprised with some flashROM.

Par Grauw

Ascended (10565)

Portrait de Grauw

21-01-2015, 13:02

I think the point of this thread is that Stt1 has cheap EPROM chips for sale, not FlashROM Smile.

Stt1 wrote:

I have a lot (hundreds of them) of these chips available, they are UV-erasable.

If someone is interested in a batch, drop me a note, please. I will sell these a lot lower than the current Ebay-prices (around 1eur = 1 chip).

Par Stt1

Hero (603)

Portrait de Stt1

21-01-2015, 20:50

Well, yeah, I have EPROM chips indeed.

And yes, I know that flash exists...

Par Stt1

Hero (603)

Portrait de Stt1

09-05-2015, 00:39

Ok, last call. No one interested?

In couple of weeks I'll trash at least half of the chips. Means minimum 1000 pieces.

Par megatron

Resident (41)

Portrait de megatron

09-05-2015, 10:56

Hi.

Possibly you could pop them on ebay.. low price say 10pcs for $5.0 plus shipping, just so they go to a good home rather than throwing them away ? This way at least you'll get some money for them !

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