Part Identification

Need help to identify this part on DigiKey…

Thanks in advance!


Hello @panegyric13

That chip is part number TSV912IST


 

Image

MFR PART # TSV912IST
DIGIKEY PART # 497-5771-2-ND
MANUFACTURER STMicroelectronics
DESCRIPTION
DATASHEET [Click Here][TSV912IST-DS]

[TSV912IST-DS]:Datasheet - TSV91x, TSV91xA - Single, dual, and quad rail-to-rail input/output 8 MHz operational amplifiers
 


Hi panegyric13,

Can you show us a bit more of your circuit board to see how the part is connected to other parts on that board? Might help to clarify whether it’s an op-amp or an EEPROM.


What parts are U7 and U13? They seem to be working together with U12 and U14, respectively.

U12 and U14 are the same part and are one adjacent sides of the board. (Both need replacement)

I can check U7 and U13 models if helpful.

HI @panegyric13 ,
With a reasonable probability this is a 1M EEPROM.

Note, that when you replace the chip, you’d need to copy the contents of the chip, otherwise the host equipment may refuse to work properly, depending on the role of the EEPROMs.
Cheers, heke

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So I ordered and received DIGIKEY PART # [497-5771-2-ND] and they are the wrong size. I should have added a measurement. Recommendation for proper sized part? Also, would it still be likely an EEROM chip if the pins are burnt off?

Hello panegyric13,

497-5771-2-ND is not an EEPROM chip. It is an OPAMP. If you need the OPAMP, it is available in different sizes. The size on your board appears to the the 8-SOIC, and not the 8-MiniSO. 497-8165-1-ND will be the same part as 497-5771-2-ND, but will be about 4.90mm long.
The dimensions for this 8-SOIC (SO8) is Figure 24 on page 19 of the DATASHEET.

The part heke recommended for an EEPROM chip (M24M01-RMN6TP), is DigiKey part number 497-6351-1-ND, will be the 4.9mm length also, in the 8-SOIC package.

Also, is there an easy way to test whether this is an opamp or eeprom when I remove the chip?

Hi panegyric13,

I’m not sure there is an easy way to test them without potentially destroying it, however the best bet for identifying it between one or the other is by part marking. In the case of what you have provided in the form of pictures, and in reviewing the datasheet for that part, I am confident the part is the same EEPROM that @heke had advised. The part number breakdown for the EEPROM is on page 42 of the attached datasheet (m24m01-r.pdf) and is as follows:

Trying to test it otherwise without knowing which pins to apply voltage to for measurement could end up ruining the device, unfortunately.

Regards,
Klint

Thanks for the info! I haven’t programmed an eeprom before but I’m an IT technician and tutorials I find don’t look difficult. Should be able to confirm when I plug into programmer. Any cheap programmers you guys recommend?

Hello panegyric13,

I searched for EEPROM programmers, and found THESE OPTIONS.
Maybe one of the engineers or someone with more experience with them, can offer a better solution.

heke,You are absolutely right!
24M01RP = M24M01-R, M24M01-DF.

1 Like

Hi guys. Please help me identify this part from Asus Tinker Board S.

It is marked C4C, has 4 pins on each side and a middle pin. No leads. Size is 2mmx2mm.

Here’s the schematic for the board, but I can’t quite figure it out myself. Thanks a lot in advance!



Hello in_sympathy,

Welcome to the DigiKey TechForum! I’d searched through the schematic and tried to see what I could find online. Unfortunately, I’m not finding anything that might give us more of an identifier on what this part is. Without knowing the function of this part or having more identifiers, I’m not going to be able to add any more context to this one.

Regards,
Klint

Hey Klint, thanks a lot for trying to help anyway :slight_smile: Quite a few people tried to help me on this and so far all of us failed to find anything :slightly_frowning_face:

Hi panegyric13,

A few points. First, without a doubt, your part is not the TSV912IDT, as the part markings for that part are “V912I”, as seen on p.22 of the datasheet for that part. Only the smaller TSV912IST has the “K125” marking. It’s definitely an STMicro M24M01-R EEPROM.

Second, any chip can have burnt pins, given the right set of conditions. However, this may indicate more problems with your board that are not necessarily clearly visible, so just replacing these chips may not solve the problem.

Third, even if only the EEPROMs were damaged, replacing them won’t necessarily fix your problem, depending on their function in the board.

EEPROMs have two common uses.

  • One use is to store permanent data that the board uses to load on start-up in order to operate properly, such as for calibration or configuration info, or sometimes to actually store code which a processor uses to execute instructions.

  • The other common use is to store data that the system obtains during operation, such as measured sensor data or other information which the system does not want to lose during a power-down event. This data will typically be rewritten to the EEPROM periodically by the system.

If the EEPROM in your system is used as in the first case above, you would have to obtain that data in order to program the EEPROM before installing on the board. If you can’t get that data, then the board will not function correctly.

If the EEPROM is used as described in the latter case, then replacing it with a blank device might work. Unfortunately, we would have no way to know whether yours is the first or second case.

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It is NCP6324, NCV6324, NCV6324BMTAATBG.

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Oh wow, amazing, thank you so much :pray:t2: