What clock is necessary to run Epson LCD Controllers?
The input clock frequency requirements are all included in the Hardware Specification for each part and differ across the product line. If an LCD Controller has a built-in PLL, then typically a lower input clock source is sufficient as all internal clocks are driven by the PLL. If an LCD Controller does not contain a PLL, then a higher frequency input clock source is typically required as all of the internal clocks are generated from this single source. Please refer to the specific LCD Controller documentation for details.