The High Speed USART in the PIC16C66, PIC16C67, PIC16C76, and PIC16C77 has been changed from a x4 clock to a x16 clock. These devices have been checked on the test fixture that found the errata in the older devices. The errata does not occur in the new devices. BTW, these new devices are 8K versions of the PIC16C63, PIC16C65A, PIC16C73A, and PIC16C74A. Regards, Rodger Richey Sr. Applications Engineer Microchip Technology Incorporated ______________________________ Reply Separator _________________________________ Subject: USART unreliable at high bit rates Author: crbres at Internet_Exchange Date: 2/22/97 11:28 AM Has anyone heard if the USART problems denoted in the errata notes will be addressed in future PIC silicon? Thanks for any info.