HD6433935 Hitachi, HD6433935 Datasheet - Page 266

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

10.3
10.3.1
In addition to SCI1, the H8/3937 Series and H8/3937R Series have two serial communication
interfaces, SCI31 and SCI32, with identical functions. In this manual, the generic term SCI3 is
used to refer to both of these SCIs.
Serial communication interface 3 (SCI3) can carry out serial data communication in either
asynchronous or synchronous mode. It is also provided with a multiprocessor communication
function that enables serial data to be transferred among processors.
1. Features
Features of SCI3 are listed below.
Data length
Stop bit length
Parity
Multiprocessor bit
Receive error detection
Break detection
254
Choice of asynchronous or synchronous mode for serial data communication
Asynchronous mode
Serial data communication is performed asynchronously, with synchronization provided
character by character. In this mode, serial data can be exchanged with standard
asynchronous communication LSIs such as a Universal Asynchronous
Receiver/Transmitter (UART) or Asynchronous Communication Interface Adapter
(ACIA). A multiprocessor communication function is also provided, enabling serial data
communication among processors.
There is a choice of 16 data transfer formats.
SCI3
Overview
7, 8, 5 bits
1 or 2 bits
Even, odd, or none
1 or 0
Parity, overrun, and framing errors
Break detected by reading the RXD
error occurs
3X
pin level directly when a framing