I want to find out max core temperature Tj of the microcontroller we are using, pic18F67J60 purchased from http://www.kynix.com/Parts/163212/PIC18F67J60T-I%2FPT.html, but I can not find it anywhere.
The datasheet says that chip will work in range of -40 to +85. But it locks up around 55C ambient. I did thermal calculation based on the package, it shows that this particular part if locked up at 55C, its max Tj is only 101C. Would that be too low for this industrial grade part?
Is is kind of disappointment for this chip not able to work in the full -40 to +85C range. Does anyone know how much heatsink I should add to make it work in 60C or 70C? I like passive heatsink not active fan if that could help cooling off this chip.:mellow::mellow:
The datasheet says that chip will work in range of -40 to +85. But it locks up around 55C ambient. I did thermal calculation based on the package, it shows that this particular part if locked up at 55C, its max Tj is only 101C. Would that be too low for this industrial grade part?
Is is kind of disappointment for this chip not able to work in the full -40 to +85C range. Does anyone know how much heatsink I should add to make it work in 60C or 70C? I like passive heatsink not active fan if that could help cooling off this chip.:mellow::mellow:
