HD64F2638F20J Datasheet, PDF (511/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Section 13 Serial Communication Interface (SCI)
Bit 4—Framing Error (FER): Indicates that a framing error occurred during reception in
asynchronous mode, causing abnormal termination.
Bit 4
FER
0
Description
[Clearing condition]
(Initial value)^*1
• When 0 is written to FER after reading FER = 1
1
[Setting condition]
• When the SCI checks whether the stop bit at the end of the receive data when
reception ends, and the stop bit is 0^*2
Notes: 1. The FER flag is not affected and retains its previous state when the RE bit in SCR is
cleared to 0.
2. In 2-stop-bit mode, only the first stop bit is checked for a value of 0; the second stop bit
is not checked. If a framing 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
FER flag is set to 1. In clocked synchronous mode, serial transmission cannot be
continued, either.
Bit 3—Parity Error (PER): Indicates that a parity error occurred during reception using parity
addition in asynchronous mode, causing abnormal termination.
Bit 3
PER
0
Description
[Clearing condition]
(Initial value)^*1
• When 0 is written to PER after reading PER = 1
1
[Setting condition]
• When, in reception, the number of 1 bits in the receive data plus the parity bit does
not match the parity setting (even or odd) specified by the O/E bit in SMR^*2
Notes: 1. The PER flag is not affected and retains its previous state when the RE bit in SCR is
cleared to 0.
2. 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.
Bit 2—Transmit End (TEND): Indicates that there is no valid data in TDR when the last bit of
the transmit character is sent, and transmission has been ended.
The TEND flag is read-only and cannot be modified.
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 461 of 1458