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Topic: How can I use a 29DL3230T-80 memory with the Arduino? (Read 1 time) previous topic - next topic

Hello! I have a 29DL3230T-80 flash memory and I want to know if I can use it with my Arduino UNO board.
I have looked for the memory datasheet but I`m not sure is the correct one. I hope tha anyone can help me. Thanks.

CrossRoads

You were able to find a datasheet on that? I am not having any luck with it.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Not really, y found a datasheet for MBM29DL323BD but I think it is not the one that I need. The diagrams dont match with my chip..

CrossRoads

Any other markings on it? Like a manufacturer?
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

The pins dont match because the round mark in the chip isnt in the same place. I cant figure up what kind of package have my chip.
(Sorry if my english is not perfect, im argentinian)

I think it is a 48-pin plastic TSOP, do you know it?

CrossRoads

That many pins will require several external chips to drive the address bus and the data bus.
It will be impossible without a datasheet on the memory chip. We won't even know where to connect power & ground, or if it needs 3.3V power vs 5V power.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Yes, without the datasheet will be imposible. Do you say that we cuold need external devices because the Atmega dosnt have enough pins to work with that big memory?

CrossRoads

Yes.
48 pins,
say 4 are power & ground.
4 are control lines (chip select, write enable, output enable, maybe another chip select),
16 datalines,
and 24 address lines (16 megaword part?)
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Yes it will be a little hard to work with this chip and the Arduino, even if we had the datasheet.
I didnt undestand "16 megaword part?"..

CrossRoads

Say you had a memory part that had 20 address lines and had data 8  bits. That would be a 1 MegaByte part, 1 million address of 1 byte each.
If the same part had 16 data bits, it would be a Word wide, so 1 Megaword.
Now add some more address lines - 24 lines (16 Mega-address locations), and 16 bits, so 16 Megawords.

No datasheet, no progress.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

I cant find the datasheet yet so I think we will have to wait for a some help. Im a little disapointed because the memory was really cheap and I wanted to take advantage of it and also use my Arduino.

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