If you're not using an external crystal in your circuit, it's internal. Select the 1MHz one if you're using the chip out of the box, as it were, or the 8MHz one if you've followed the instructions to set the chip to 8.
Cheers ! Geoff
If you're not using an external crystal in your circuit, it's internal. Select the 1MHz one if you're using the chip out of the box, as it were, or the 8MHz one if you've followed the instructions to set the chip to 8.
Cheers ! Geoff