Specifications

Differences vs. ’C240 SCI
8-7 Serial Communications Interface (SCI)
8.1.4 Multiprocessor and Asynchronous Communication Modes
The SCI has two multiprocessor protocols, the idle-line multiprocessor mode
(see section 8.3.1 on page 8-10) and the address-bit multiprocessor mode
(see section 8.3.2 on page 8-12). These protocols allow efficient data transfer
between multiple processors.
The SCI offers the universal asynchronous receiver/transmitter (UART)
communications mode for interfacing with many popular peripherals. The
asynchronous mode (see section 8.4, on page 8-14) requires two lines to inter-
face with many standard devices such as terminals and printers that use
RS-232-C formats. Data transmission characteristics include:
- one start bit
- one to eight data bits
- an even/odd parity bit or no parity bit
- one or two stop bits