[General] a strange microcontrolle

[adeyan_2015]

Dear guys

I have a chip,but the type was errased,no Logo,no type, so I wanna find the type of chip,It's very important to me !
And I list information about pin's function
And so many people tell me it's not a Microcontroller,it's like CPLD or other's programable device,

28 PIN SOP

1-4 pin input
5 pin 485 interface
6 pin 485 interface
7 pin GND
8-9 pin oscillator
10-14 output
15 pin output
16 pin output
17-18 pin output
19-20 pin output
21 pin VDD
22-28 pin output

 

[betwixt]

For the manufacturer to have erased the part number it probably is a generic part. What is the product?

Brian.

 

[adeyan_2015]

The mcu can make 12 way pluse,and control the thyristor

 

[FvM]

I didn't yet get the point why you call it a "strange" microcontroller? It looks quite normal so far.

 

[mtkr]

Go to Farnell or Mouser or Digikey to use their search mechanisms. Search for all microcontrollers in SOP28 housing. Then find the ones with GND on pin 7 and Vdd on pin 21. Fortunately his way you will narrow your search to a specific producer and uC family...