From the 1994 RS catalogue 57 different output frequencies, derived from the internal crystal oscillator (57 ? Sure it's not made by Heinz ?) 1 NC 2 P3 3 P2 4 P1 5 P6 6 P5 7 P4 8 Ground 9 Output 10 Test 11 F out 12 CK 13 CK Select 14 Reset 15 NC 16 V+ (4V - 6V) Tolerance +/-100ppm Stability +/- 0.015% Voltage co-eff 10ppm/V typical 25ppm/V max Ageing 100ppm max first year Shoot, think I've helped enough today to prevent a small war ;-) -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body