HD64F2636F20 Datasheet, PDF (1450/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Appendix B Internal I/O Register
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Notes: 1. The ORER flag is not affected and retains its previous state when the RE bit in SCR is
cleared to 0.
2. The receive data prior to the overrun error is retained in RDR, and the data received
subsequently is lost. Also, subsequent serial reception cannot be continued while the
ORER flag is set to 1. In clocked synchronous mode, serial transmission cannot be
continued, either.
3. The PER flag is not affected and retains its previous state when the RE bit in SCR is
cleared to 0.
4. If a parity error occurs, the receive data is transferred to RDR but the RDRF flag is not
set. Also, subsequent serial reception cannot be continued while the PER flag is set to
1. In clocked synchronous mode, serial transmission cannot be continued, either.
5. Retains its previous state when the RE bit in SCR is cleared to 0 with multiprocessor
format.
* Only 0 can be written, to clear the flag.
RDR0—Receive Data Register 0
Bit
7
6
5
H'FF7D
4
3
SCI0, Smart Card Interface 0
2
1
0
Initial value
0
0
0
0
0
0
0
0
Read/Write
R
R
R
R
R
R
R
R
Store serial receive data
Page 1400 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010