HD6432646 Hitachi, HD6432646 Datasheet - Page 465

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

13.1
The H8S/2646 Series 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
Clocked Synchronous 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
Serial data communication synchronized with a clock
One serial data transfer format
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
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