All Questions
Tagged with eeprom integrated-circuit
11
questions
0
votes
1
answer
182
views
AT24C32 as a replace?
i want to make this part of circuit .
It uses 24AA32A IC. Can i use AT24C32 instead . im worry about A0, A1 and A2.
my question : if i want to use 24C32 , to work exactly like 24AA32 i should not ...
- 377
0
votes
1
answer
1k
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Combine two 8bit EEPROM to make 16bit EEPROM
I am working on building a computer out of logic chips.
I want to use an EEPROM as the instruction memory. However, my EEPROM's only has 8bits data output, but I want my instructions to be 16bits long....
- 139
3
votes
1
answer
568
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What's the difference between 1kb(64x16) and 1kb(128x8) for EEPROM memory size?
In addition to the question in the title, I have the following subquestions:
I'm guessing 64x16 means something like 64 cells of 16 bytes each. Is this accurate?
What is the significance (if any) of ...
2
votes
3
answers
1k
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Can no-connect pins on EEPROM ever be connected to VCC or GND?
I created a circuit in which all the address inputs of an AT28C256 are connected to outputs of shift registers (74HC164).
In the future I will do many of these circuits, however I haven't yet ...
-1
votes
1
answer
298
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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 ...
- 1,191
3
votes
1
answer
277
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How easy to indentify memory like ROM or EEPROM Flash Memory Areas of a Chip
Can anyone tell me would the memory circuit areas (ROM, EEPROM, SDRAM, Flash Memory) of the layers of a die belonging to a MCU and SoC IC's be relatively easy to identify compared to identify circuit ...
- 221
11
votes
3
answers
2k
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Why does this EPROM have comb-like structures around the wire bonding pads?
I took some pictures of a Microchip EPROM die from the late 80s / early 90s (I can't recall the exact part number). The wire bonding pads are surrounded by a comb-like structure. What is the purpose ...
- 397
2
votes
3
answers
2k
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Looking for 4 bit memory option
I'm building a small and simple 4-bit CPU and I'm looking for an IC to store the program opcodes. I've considered using eeproms although they seem too large for my purpose, being in the kilobyte ...
- 469
2
votes
2
answers
811
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Play PCM stored in EEPROM without microcontroller
Is it possible to connect digital-to-audio converter with a EEPROM storing PCM data to play that data with a speaker? I am interested in a solution that does not employ any kind of microcontroller. ...
2
votes
1
answer
483
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Dot Matrix IC message board [closed]
I'm trying to make a dot matrix message board -type thing work,
The dot matrix IC's are the DL-57 Alpha Numeric Dot Matrix Display [Data Sheet] : https://drive.google.com/file/d/...
- 251
6
votes
1
answer
7k
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Replacing 27C256 with 28C256, how to wire /WE?
I am looking to replace a 27C256 compatible maskRom (nintendo Nrom PRG and CHR if it matters) with a socketed 28C256 in order to make a development cart.
It looks like the pin for A14 is in the wrong ...
