Download the UM2681-2 datasheet PDF.
This datasheet also includes the UM2681 variant, as both parts are published together in a single manufacturer document.
Programmable data format
5 to 8 data bits plus parity Odd, even, no parity or force parity 1, 1.5 or 2 stop bits programmable in 1/16 bit increments'.
Programmable baud rate for each receiver and transmiter' selectable from: 18 fixed rates: 50 to 38.4K baud One user defined rate derived from programmable timer/counter External 1x or 16x clock.