http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2008-12-01T23:19:43-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t8855.html 2008-12-01T23:19:43-08:00 Will it success to use 100M crystal in M88 system?I read some book , some say its upper limit is 100M, but also some say 20M, i want to use it in a atmega88 system, kindly for yours.[ Admin: Link removed! ] http://www.8051projects.net/forum-t8855.html 2008-12-01T23:19:43-08:00 sashijoseph @avrecoder For Atmega88 max frequency is 24MHz.. http://www.8051projects.net/forum-t8855.html 2008-12-01T23:19:43-08:00 Ajay I checked the datasheet and nowhere its mentioned that 100M can be used for M88.max frequency specified is 20M.PS: Are you just here to put links from chinaICmart? or what? I really doubt. If that is the case. Please stop doing it or you may get yourself banned!Ignore this if you can provide me a possible reason for putting that link in your post! http://www.8051projects.net/forum-t8855.html 2008-12-01T23:19:43-08:00 avrencoder ??? http://www.8051projects.net/forum-t8855.html 2008-12-01T23:19:43-08:00 Ajay never mind:)if you work on low voltage then maximum crystal frequency is 10Mhz and if you are using high voltage then crystal frequency is 20Mhz