Part identification - datasheet required

Thread Starter


Joined Jan 4, 2020
Hi Guys and Gals, new to the forum!

I'm trying to identify and source a datasheet for an IC. It's a small 28pin Square IC.

Part number reads exactly as:


There is an underscore underneath the capital B.

There is a dot before the top line of A708 (Possibly to denote pin 1 on the chip?).

The camera on my phone isn't the best (Iphone SE), but it's the square chip in the middle of the board in the photo.



Joined Feb 22, 2014
I cant find any info from the numbers you listed, at a guess i would say it was a micro-controller. Probably a QFN package.


Joined Mar 30, 2015
The picture isn't at all helpful. This is what we see:

What sort of device is this used in? Why do you want to know what it is?

Thread Starter


Joined Jan 4, 2020
It would help if you told us what is the unit and the make and model of the unit.
It's a holden car remote programmer.

The board has a tiny 6 pin header (smaller than normal), I'm after a datasheet to that chip so I can understand how I can go about connecting a programmer up to it.

Thread Starter


Joined Jan 4, 2020

Microchip have come back and say the chip is an "ATMega88a", they even gave me a file to help identify their chips along with atmel chips.

Full statement below:

From what I checked the device you mentioned is ATmega88A (28 pin VQFN package).
You can see this marking in the PCN page 23, last line (24/28 VQFN 4x4MM): marking guideline_part1.pdf
A quick google brings up the datasheet.

Now it's just a matter of figuring out how to connect my programmer to it! I've got a TL866 II Plus.

I had to go to my mates crib who had a decent camera with the ability to focus on that chip, pictures are attached.



Joined Jul 11, 2016
who had a decent camera
at the past job we had to make the product images for our sales database . . . it may be also the cam . . . but we got 3x 250W spotlights and you still got some nasty shadows and or high contrast in between light and dark areas . . . usually made over 20 pics of which then 2 or 3 came out suitable
. . . you need a lot of light and guess/trial out the right relative camera angle to those lights - best images come on a clear mid-day taken outside at natural sunlight

??? quick Gooleing Photography/PhotoHints.html

Thread Starter


Joined Jan 4, 2020
??? quick Gooleing
A quick google of "atmega88" brought up a datasheet.

I'll have to confirm that is the correct datasheet though, looking at the datasheet, pin 3 is Vcc, the circuit board trace has this pin going through a capacitor and then to the signal ground of the obdII port... :confused:


Joined Oct 2, 2009
What are you trying to do?
MCUs are programmed at the OEM factory and most likely code protected so that you cannot read the code.