Hello.
Recently,i install a new seven segments display instead of failed one
in an air conditioner display pcb and i wondered if i can
change,also,the MCU in the same manner(if it was failed)as the 7 segments display.
I mean:if i need to buy 7 segments display,i can buy it by looking for a one that is
with the same specification and install it.
If i need to replace a failed driver(in my case HC373/D type latches)i can find it
by this code and solder it.
As you can see without any special process.
But if i need to replace a failed MCU,in my case:68HC05P9,
Is it enough simply to look for a MCU with that code,buy it and solder it directly to the pcb?
or the MCU should be programed first?
I don't have any failed MCU,but i wonder if buying a MCU follow its code that marked on it,
means that the MCU has already a special and unique programmable,that is already made in it and it fitted only to the same display circuit, or,perhaps,buying a MCU with the same code is not enough,as you must program it?
I took my recent job as an example,but it is a general question?
Thanks in advance.
Recently,i install a new seven segments display instead of failed one
in an air conditioner display pcb and i wondered if i can
change,also,the MCU in the same manner(if it was failed)as the 7 segments display.
I mean:if i need to buy 7 segments display,i can buy it by looking for a one that is
with the same specification and install it.
If i need to replace a failed driver(in my case HC373/D type latches)i can find it
by this code and solder it.
As you can see without any special process.
But if i need to replace a failed MCU,in my case:68HC05P9,
Is it enough simply to look for a MCU with that code,buy it and solder it directly to the pcb?
or the MCU should be programed first?
I don't have any failed MCU,but i wonder if buying a MCU follow its code that marked on it,
means that the MCU has already a special and unique programmable,that is already made in it and it fitted only to the same display circuit, or,perhaps,buying a MCU with the same code is not enough,as you must program it?
I took my recent job as an example,but it is a general question?
Thanks in advance.