http://www.smrj.ac.jp/index.html

http://www.itmedia.co.jp/enterprise/articles/0706/01/news012.html

http://akiba.geocities.jp/atmel_avr_atros/20071014.html

http://rltm9940.blogspot.com/2008/06/com0com.html

http://monoist.atmarkit.co.jp/fembedded/articles/miconkiso2/04/miconkiso2_04b.html

http://www.geocities.jp/kuman2600/n15i2c.html#10

http://www.wsnak.com/kit/avr_sample/t2313/index.html

http://www.eleki-jack.com/mycom2/2007/10/avri2c1_usitwi.html