Oscillator speed, what does 16F628A-04p mean

[tasmod]

Does this mean the chip onboard oscillator is limited to 4mhz maximum or is it the external oscillator that has a 4mhz maximum.

Typical, i've a project to build using a 10.240mhz crystal and I've just one 16F628A-04p left.

[mackrackit]

It has a 4MHz internal and it is a PDIP.

It will work for your project.

[davmart]

The internal oscillator for that chip is 4Mhz. Different external crystals up to 20Mhz can be used. Either way you will need to define the oscillator (internal or external) and freequency in the configuration part of the program. For a better explaination of the chip you can go to Microchip's web site and get the Data Book for the 16F6xxx series chips in PDF format.