garvind25
Full Member level 3
Hi,
I was looking to select a clock for my CPLD based project (XC2C256). Hope someone could help.
Can HCMOS oscillator with 3.3v supply be used for LVCMOS3v3 input pin? As I saw in the CPLD datasheet VIH is 2.0v to 3.9v and VIL -0.3v to 0.8v. The output voltage of the oscillator is not specified in the datasheet (though it is mentioned that output waveform is HCMOS type).
CPLD datasheet: Here
Oscillator datasheet: View attachment datasheet.doc
Thanks,
Arvind Gupta
I was looking to select a clock for my CPLD based project (XC2C256). Hope someone could help.
Can HCMOS oscillator with 3.3v supply be used for LVCMOS3v3 input pin? As I saw in the CPLD datasheet VIH is 2.0v to 3.9v and VIL -0.3v to 0.8v. The output voltage of the oscillator is not specified in the datasheet (though it is mentioned that output waveform is HCMOS type).
CPLD datasheet: Here
Oscillator datasheet: View attachment datasheet.doc
Thanks,
Arvind Gupta