In the datasheets that I have the DS1337 (REV 080508) crystal specs are 6pF and 50KOhms
The DS1307 (REV 100208) is 12.5pF and 45KOhms.
(* jcl *)
In the datasheets that I have the DS1337 (REV 080508) crystal specs are 6pF and 50KOhms
The DS1307 (REV 100208) is 12.5pF and 45KOhms.
(* jcl *)