h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 389

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

This LSI has four independent serial communication interface (SCI) channels. The SCI can handle
both asynchronous and clocked synchronous serial communication. Serial data communication
can be carried out using standard asynchronous communication chips such as a Universal
Asynchronous Receiver/Transmitter (UART) or an Asynchronous Communication Interface
Adapter (ACIA). A function is also provided for serial communication between processors
(multiprocessor communication function). The SCI also supports an IC card (smart card) interface
conforming to ISO/IEC 7816-3 (Identification Card) as a serial communication interface extension
function.
Figure 13.1 shows a block diagram of the SCI.
13.1
• Choice of asynchronous or clocked synchronous serial communication mode
• Full-duplex communication capability
• On-chip baud rate generator allows any bit rate to be selected
• Choice of LSB-first or MSB-first transfer (except in the case of asynchronous mode 7-bit data)
• Four interrupt sources
• Module stop mode can be set
Asynchronous mode
• Data length: 7 or 8 bits
• Stop bit length: 1 or 2 bits
• Parity: Even, odd, or none
• Receive error detection: Parity, overrun, and framing errors
SCI0027B_0000020040900
The transmitter and receiver are mutually independent, enabling transmission and reception to
be executed simultaneously.
Double-buffering is used in both the transmitter and the receiver, enabling continuous
transmission and continuous reception of serial data.
External clock can be selected as a transfer clock source (except for in Smart card interface
mode).
Transmit-end, transmit-data-empty, receive-data-full, and receive error  that can issue
requests.
The transmit-data-empty interrupt and receive data full interrupts can be used to activate the
data transfer controller (DTC).
Section 13 Serial Communication Interface (SCI)
Features
Section 13 Serial Communication Interface (SCI)
Rev. 2.00 Dec. 05, 2005 Page 351 of 724
REJ09B0200-0200