I want to use the simple camera ov7670 and that camera requires a system clock, called XCLK.
The clock requries 24 MHz input from a source that are at 50% duty call and a period of 24 nanoseconds.
Does this mean that I should use a PWM signal from a micro controller, or should I use an external crystal oscillator?
Best Answer
You should use an external Crystal Osc. (XO) with the duty cycle specifications given. That will satisfy the pulse width variations given for the range of frequencies also given.