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. Thu, 04 Dec 2008 16:19:47 -0800 http://backend.userland.com/rss092 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 at <noauthor@nospam.com> http://www.8051projects.net/forum-t8855.html @avrecoder For Atmega88 max frequency is 24MHz.. sashijoseph<sashijoseph@nospam.com> http://www.8051projects.net/forum-t8855.html 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 Ajay<contact@nospam.com> http://www.8051projects.net/forum-t8855.html ??? avrencoder<encoder2008@nospam.com> http://www.8051projects.net/forum-t8855.html 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 Ajay<contact@nospam.com> http://www.8051projects.net/forum-t8855.html