Supply voltage for read operation

[rob]

I'm using an MC9S08LC60 HCS08 family device. I found the following specification about supply voltage for read operation:

0 < Fbus < 8MHz           ----     Vread 1,8 to 3,6V

0 < Fbus < 20MHz         ----     Vread 2,08 to 3,6V

Where is the difference? If I use an 8Mhz external resonator to obtain an internal 2Mhz bus clock which voltage range must  I consider? 

Thank you

[vicentegomez]

Hi Roberto 

Let me put it in other words.

The minimum voltage level that you need to read the flash at 8 MHz of bus clock is 1.8 V

The minimum voltage level that you need to read the flash at 20 MHz of bus clock is 2.08 V

I hope this will help you.

Regards

Vicente Gomez