michael rushton

S12X EWAITE function

Discussion created by michael rushton on Sep 4, 2006
Latest reply on Sep 7, 2006 by Daniel Malik
Hi, We have a LCD controller connected to a S12XDP512, The LCD controller wait pin is connected to EWAITE on the micro. When I enable The external wait function via EBCTRL1 the micro locks up and a COP intrrupt occurs. I notice that the LCD controller asserts it's Wait line ( active low) on a read or write, but it stays low, which I guess is upseting the micro/debugger. If I disable the External wait function, the line will go low and then high on aread or write. Does anyone have any idea why this happens? Cheers!