Er, why and how would a serial flash be used as an e-ink controller? More likely the built-in e-ink controller on that particular Freescale processor is being used. <a href="http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=i.MX508" rel="nofollow">http://www.freescale.com/webapp/sps/site/prod_summary.jsp?co...</a>