h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 463

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

13.1
The H8S/2646 Group is equipped with 2 or 3 independent serial communication interface (SCI)
channels * . The SCI can handle both asynchronous and clocked synchronous serial
communication. A function is also provided for serial communication between processors
(multiprocessor communication function).
Note: * Two channels in the H8S/2646, H8S/2646R, and H8S/2645; three channels in the
13.1.1
SCI features are listed below.
• Choice of asynchronous or clocked synchronous serial communication mode
Asynchronous mode
 Serial data communication executed using asynchronous system in which synchronization
 A multiprocessor communication function is provided that enables serial data
 Choice of 12 serial data transfer formats
 Receive error detection : Parity, overrun, and framing errors
 Break detection
Clocked Synchronous mode
 Serial data communication synchronized with a clock
is achieved character by character
Serial data communication can be carried out with standard asynchronous communication
chips such as a Universal Asynchronous Receiver/Transmitter (UART) or Asynchronous
Communication Interface Adapter (ACIA)
communication with a number of processors
Data length
Stop bit length
Parity
Multiprocessor bit
Serial data communication can be carried out with other chips that have a synchronous
communication function
H8S/2648, H8S/2648R, and H8S/2647.
Section 13 Serial Communication Interface (SCI)
Overview
Features
: 7 or 8 bits
: 1 or 2 bits
: Even, odd, or none
: 1 or 0
: Break can be detected by reading the RxD pin level directly in
case of a framing error
Section 13 Serial Communication Interface (SCI)
Rev. 5.00 Sep 22, 2005 page 437 of 1136
REJ09B0257-0500