8-Pin Chip in Automotive Modules – How Much Do You Know?

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Instruction: explanation of the eight-pin chip, for fun with various automotive modules!

What is an eight pin chip?
There are two types of eight pin chips: square and rectangle. Below, they can be divided into two types: straight insert and patch, with four antennae on each side. This kind of chip has a small amount of data storage and is easy to replace, but it needs our patience to test welders. Common eight pin chips include: 24C04, 24C08, 24C16, 24c32, 25020, 25160, 25320, 25640, 25256, 93C66, 93c76, 93c86, 93a86, 95160, 95320, 95640, 95256, 35080, 160D, 35160wt, 35128wt, etc.

What modules are eight pin chips used in?
In our daily work, eight pin chips are mostly used in combination meters and airbag computers, and some are used in other body computers, but most of our customers are used for mileage repair and airbag repair.

Why are octet chips hard to distinguish, or to locate?
This kind of situation often occurs in the instrument module. Generally, the CPU of this kind of instrument and the eight pin chip coexist, or close to, or on the other side, or even under the display screen. The position is not fixed, and the chip is engraved with a mask. For new customers, we only know the full name of the chip, and we know nothing about mask, which tests our vision.

1:Determination of chip model
In the auto repair career, even if the chip is right now, we may not be able to recognize it, because many chips are printed with masks, that is, small names. The eight pin chip is different from the 9s chip mentioned in the last lesson, either only the full name of the model is marked or only the mask is marked, so we must remember the corresponding mask name to use it freely. There are three pictures below, the first is 24C04, the second is 95160, and the third is 93C66.


2:In order to facilitate the identification of eight pin chip, we specially make a mask table, welcome to add.
C46M6=93C46
85C82=24C02=02B1 
85C92=24C04=04B1 
3132=24C01A=01B1 
X24C01=X24C01 
68343=25010
9355093=24C08=08B1 
LRA10-425=LC46 
S220=93C56
95160=25160
25640=95640
L56R=93C56
574252=24C02
RL56=93C56
LC46=93C46=46D 
D6252=24C01
D6253=24C01
D6254=24C01
PDH001=X24C44 
PDH004=X24C44
DD72=93CS56 
DD82=93CS66
C56M6=93CS66 
S330=RA57=93C56 
RA86=93A86 
S130=93C46 
S530=93C86 
C46=93C46
0D080=35080 
ST14771=25020 
5P08C3=95040 
58597=B58=24C02
S244=PDH001 
ST1001376=B11AB=24C16 
M851G=93C46 
S2943=93C76
5LCA=25640=95640
H160=95160
H320=95320
H128=95128
L16=24C16
RH86=93C86
4G16=24C16
52B0=95020
RS16=95160
4G04=24C04