Download the MC68HC2681 datasheet PDF.
This datasheet also covers the MC68HC681 variant, as both devices belong to the same dual universal asynchronous receiver/transmitter family and are provided as variant models within a single manufacturer datasheet.
Note: The manufacturer provides a single datasheet file (MC68HC681_MotorolaSemiconductor.pdf) that lists specifications for multiple related part numbers.
www.DataSheet4U.com MC68HC681
DUAL ASYNCHRONOUS RECEIVER/TRANSMITTER (DUART)™ Motorola reserves the right to make changes without further notice to any products herein.