At 02:04 PM 9/23/99 -0500, Jerry wrote: >At 10:35 PM 9/22/99 , you wrote: >>Can anyone tell me the difference between the 16c73a and 16c73b chips? >>There specs seem identical, but the 16c73b sells for 1/3 less. > >The 73b is a die shrink and bug fix BUT also has a different SPI >peripheral. It has the same SPI peripheral as the '77 but the memory map >of a '74. > >Look at the SSPSTAT register definitions of the '74A,'74B and '77 devices. Based on the info everyone has supplied, I've gone ahead an ordered a sample of the 16c73b for development. Thanks to all for the help. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral@lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causae scire" ================================================================