ST90158 - ST90135

` Full duplex synchronous and asynchronous operation.
` Transmit, receive, line status, and device address interrupt generation.
` Integral Baud Rate Generator capable of dividing the input clock by any value from 2 to 216-1 (16 bit word) and generating the internal 16X data sampling clock for asynchronous operation or the 1X clock for synchronous operation.
` Fully programmable serial interface:
5, 6, 7, or 8 bit word length.
Even, odd, or no parity generation and detec-tion.
0, 1, 1.5, 2, 2.5, 3 stop bit generation.
Complete status reporting capabilities.
Line break generation and detection.

Note: Stresses above those listed as "absolute maximum ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these conditions is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. All voltages are referenced to V_SS

The Multiprotocol ST90158 - ST90135 Serial Communications Inter-face (SCI-M) offers full-duplex serial data ex-change with a wide range of external equipment. The SCI-M offers four operating modes: Asynchro-nous, Asynchronous with synchronous clock, Seri-al expansion and Synchronous.