If everything is linear, and it probably is, you could double the 4 mhz value or halve the 16 mhs value. That should get you close. Jim -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of Olin Lathrop Sent: Sunday, February 20, 2011 2:44 PM To: Microcontroller discussion list - Public. Subject: Re: [PIC] IC2 SSPADD value ? Carl Denk wrote: > Data sheet, Table 17-3 (I2C Clock with W/BRG) There are FOSC values of > 40, 16, 10, and 4 mhz., but not 8 mhz. that I have. Surely they also provided a formula or explained how the clock will be divided down. They can't put examples for every possible oscillator value in the datasheet. They are, after all, just examples. You are expected to use your own brain, whether there happens to be a example that exactly fits your case or not. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .