Hi there, i have problem in using AT89C52. When i used this ic, my board is not working at retrieving data and sending data to pc. Previously i have done using 8051 in demoboard and it works fine. For this AT89C52 i have included the library file <AT89x52> but still my board is not working , why? . i have enabled the "use on chip rom" and have connected the EA pin to logic high. but i do observe that there is no oscillation signal at pin 18. Is there any setting that i have to set for this AT89C52?? Please help me on this problem. Your help is much appreciated. Thanks. Nore
this cap 33pF I hope you mean these caps. Erik
hi there, yes it means these cap. actually i have discovered that my databus lines no connectivity . once the databus lines are connected, my board working fine. Anyway thank-you very much.