HD64F2638F20J Datasheet, PDF (496/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 13 Serial Communication Interface (SCI)
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
⎯ One serial data transfer format
Data length
: 8 bits
⎯ Receive error detection : Overrun errors detected
• Full-duplex communication capability
⎯ 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
• Choice of LSB-first or MSB-first transfer
⎯ Can be selected regardless of the communication mode* (except in the case of
asynchronous mode 7-bit data)
Note: * Descriptions in this section refer to LSB-first transfer.
• On-chip baud rate generator allows any bit rate to be selected
• Choice of serial clock source: internal clock from baud rate generator or external clock from
SCK pin
• Four interrupt sources
⎯ Four interrupt sources — transmit-data-empty, transmit-end, receive-data-full, and receive
error — that can issue requests independently
⎯ The transmit-data-empty interrupt and receive data full interrupts can activate the data
transfer controller (DTC) to execute data transfer
• Module stop mode can be set
⎯ As the initial setting, SCI operation is halted. Register access is enabled by exiting module
stop mode
Page 446 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010