Features; Block Diagram; Serial Communication Interface - Hitachi H8S/2678 Series Reference Manual

16-bit single-chip microcomputer

Table of Contents

Features

• Three independent on-chip channels in the H8S/2678 Series

• Selection of synchronous or asynchronous serial communication mode

• Full-duplex communication capability

• Selection of LSB-first or MSB-first transfer

• Built-in baud rate generator allows any bit rate to be selected

• Selection of transmit/receive clock source

• DTC and DMAC can be activated by four interrupts (ERI, RXI, TXI, and TEI)

• Module stop mode can be set

SCMR: Smart card mode register

Receive shift register

Receive data register

Transmit shift register

Transmit data register

Serial mode register

Serial control register

Serial status register

Bit rate register

Module data bus

Transmission/

reception control

Parity generation

Parity check

Figure 6.9 Block Diagram of SCI

External clock