Identifying Unknown IC from Clone HP Toner Cartridge Modules with e3 Logo

Hello all!

I have a bunch of modules (photos attached) rescued from clone HP toner cartridges with an IC (presumably, a microcontroller) that I cannot identify, despite a lot of searching and even trying with ChatGPT...

Other similar modules use PIC 12F683 and 16LF819, but the number of pins is not the same.

The manufacturer's logo is something like e3 or e&, the marking is 0650, and a variable code below (OCP, ODM, ODO...)

Could somebody there help identify the chips or, at least, the manufacturer?

Thank you very much!!

It is likely to be a random Chinese company producing customised chips. The documentation for the chips is only given to those ordering them, so you can let go of further searching.

Such e3 is a Pb-free design, not a manufacturer's logo.
They are often found on various manufacturers

.

found:
According to IPC/JEDEC J-STD-609
e0 - contains intentionally added lead (Pb)
e1 - SnAgCu (shall not be included in category e2)
e2 - Sn alloys with no Bi or Zn excluding SnAgCu
e3 - Sn
e4 - Preplated (e.g., Ag, Au, NiPd, NiPdAu)
e5 - SnZn, SnZnx (no Bi)
e6 - contains Bi
e7 - low temperature solder (≤ 150C) containing Indium (no Bi)
e8, e9 - unassigned