All Questions
Tagged with eeprom non-volatile-memory
19
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What is the memory address for 24AA16 EEPROM IC?
I am using 24AA16 EEPROM IC to read and write. But i don't know exactly the memory adddress to write something in this IC and also read from that. This is the datasheet for this IC,
https://ww1....
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External NOR Flash malfunctioning
External NOR Flash malfunctioning
Part used: ZD25WQ16CTIGT Zetta NOR Flash
We are using Zetta family 16MBit NOR Flash in a partitioned format. One partition is used as an emulated EEPROM, and another ...
2
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Is it safe to replace a 120ns Flash memory with a 90ns part?
Here is an old PLC board with a pair of AM29F200AB-120SI SOP-44 256kB 5V flash chips. One is unable to retain data, after nearly three decades in service.
These are very challenging to find today, ...
- 16.3k
1
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2
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210
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Non volatile memory on simple hardware board [duplicate]
I'm designing a low frequency board with some analog signals inputs and a few discrete logic gates which drive warning LEDs. I want to save the status of the LED even if the board is powered off. No ...
- 89
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1
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314
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EEPROM memory erase bit vs word
If I have an EEPROM 1K X 16, can I erase bit by bit or just word by word (2 bytes/16 bits) in my matrix of registers ? In digital systems - TOCCI, the EEPROM is modeled by a matrix of registers, each ...
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How Many EEPROM Write Cycles Left in My EEPROM
I ordered some AT28C256 EEPROMs, but none of them were cleared, they all have some garbage programmed, probably from the last user. Obviously they're supposed to be clean and new. I wanted to ask, is ...
13
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8
answers
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EEPROM being both "programmable" and "read-only"
Since it is called programmable, I tend to think that it should also be named with the write option. What is the deal here?
- 2,106
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How is an EEPROM different from a Flash memory? [duplicate]
I am trying to understand the terminology used for various non-volatile memory chips for example as EEPROM and Flash.
Is there any preference to use the word EEPROM or Flash for specific type of ...
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7
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3
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Why isn't there any EEPROM in STM32F4 MCUs? [closed]
Why isn't there any EEPROM in the STM32F4 series MCUs?
Mostly I have Microchip MCUs and they have EEPROM available in them, but I just found out that it is not available in the STM32F4 MCUs... And it ...
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2
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1
answer
756
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Are EEPROM chips getting obsolete?
I am making a circuit with a microcontroller that has a periodic need to save about 500 bytes of information in a non-volatile storage. Running only on a supercap that might be charged up rarely, the ...
- 300
-1
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DIL IC for simple non-volatile memory [closed]
Can anyone suggest a DIL IC where I can store a couple bits of memory without having to use a complicated interface like serial, I2C, and etc. I want to be able to store at least 2 bits of memory to ...
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3
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Why fram instead of eeprom
Why do all the gameboy cartridge mods for nonvolatile save use a type of ram like fram? Why isn't a sufficiently fast eeprom or flash ic used?
EDIT: We all know this is about parallel interface ICs, ...
- 613
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3
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3k
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Why use RAM IC over EEPROM IC?
I have been looking at various different external storage ICs that would work with an arduino. When I looked at the specs of some EEPROM chips and compared it to the specs of other RAM chips, I ...
- 515
19
votes
4
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Why do most of the non-volatile memories have logical 1 as the default state?
I have used non volatile memory, like EEPROM and FLASH memory, in embedded applications and I have always found that unused memory (EEPROM/FLASH) bit locations are always set to ...
- 2,138
4
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2
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EEPROM Write Cycle Time and Write Cycle Endurance
I have an embedded software application that is copying a buffer from RAM to EEPROM. In this case, the EPROM device is a 28C010 (128K x 8). The copying is done at non-regular intervals, generally in ...
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