Read and write unknown eeprom printer

[minanapil13]

hallo every one i need help to read and save this chip and write it again to reset paper counting in my samsung printer so i just photo i dont know why the pin out is deferent than the regular eeprom flash like 24XXX and 25XXX series i have arduino uno and CH341A i dont fine any datasheet for it

[J-M-L]

The 1815 make me think it's may be it's a ViewSonic E-IC-0401-1815

A quick search leads to IC-M24C08BN6 (EEPROM)) and this datasheet...

There is also the WinBond 25Q32JVSIG-1815 chip (Flash Serial SPI)

really just a guess...

[minanapil13]

is not detectable if i wired the same 25XX serials

[J-M-L]

it's really a shot in the dark...

[minanapil13]

its has a defrent name also

[minanapil13]

another name same function

[J-M-L]

Seems replacement parts are being sold. May be it's not a rewritable EEPROM

[minanapil13]

i want to read it only so i can make a dump

[J-M-L]

OK - unfortunately without the exact component information it's hard to know.. poking around trying to find an I2C address for example could be a good start

[minanapil13]

what is component take the same pins legs name ?

[Smajdalf]

Get a logic analyzer and look how the printer uses the device.

[Smajdalf]

C5 is connected to pin 6 and this is connected to the small Vcc pad. But I don't see connection between the large and small Vcc pad! I think pins 5 and 6 are NOT connected externally. The device may be an EERAM. Example DS is included.
downloads-1.pdf (539.7 KB)

[minanapil13]

the thing that i want to extract or read the eeprom form it so i can reset it so i need to connect it correctly in my CH341A to read it or its cannot to read it ? if not how to read it ? if i read it i can make clone from it

[MarshaJ847]

Printer companies do a good job of making their counter chips un-hackable by ordinary users. I have the same problem with Lexmark, I end up buying Asian eBay chips.

Off hand, what model of Samsung printer?

[J-M-L]

Exactly, if you look for P8H4110 you’ll find tons of non branded board that claim to be compatible. And they sell the full board…

[minanapil13]

M2020 samsung if we can read it we can rewrite it again in another chip

[minanapil13]

Necessity is the mother of invention
yes the same chip P8H4110

[minanapil13]

how to modify eeprom in board .bin file the eeprom solder it to main printer board so we can modify it to overcount the paper or somthing

[minanapil13]

like this one how to modify it to be able to reset or block the reading of the counter chip