Datasheet

Communication interfaces
9.9.1 Serial communications interface (SCI)
This device includes three independent serial communications interface (SCI) modules.
Typically, these systems are used to connect to the RS232 serial input/output port of a
personal computer or workstation. They can also be used to communicate with other
embedded controllers.
A flexible, 13-bit, modulo-based baud rate generator supports a broad range of standard
baud rates beyond 115.2 kBd. Transmit and receive within the same SCI use a common
baud rate, and each SCI module has a separate baud rate generator.
This SCI system offers many advanced features not commonly found on other
asynchronous serial I/O peripherals of the embedded controllers. The receiver employs an
advanced data sampling technique that ensures reliable communication and noise
detection. Hardware parity, receiver wakeup, and double buffering on transmit and
receive are also included.
NOTE
2-bit stop bits mode is not supported in SCI2.
The following figure shows the device block diagram highlighting SCI modules and pins.
9.9
Chapter 9 Chip configurations
MC9S08PA60 Reference Manual, Rev. 1, 9/2012
Freescale Semiconductor, Inc. 233