h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 330

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

Rev. 2.00, 03/04, page 298 of 534
Bit
5
4
Bit Name
ORER
FER
Initial
Value
0
0
R/W
R/(W)* Overrun Error
R/(W)* Framing Error
Description
Indicates that an overrun error occurred while receiving
and the reception has ended abnormally.
[Setting condition]
•
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.
[Clearing condition]
•
The ORER flag is not affected and retains its previous
state when the RE bit in SCR is cleared to 0.
Indicates that a framing error occurred while receiving
in asynchronous mode and the reception has ended
abnormally.
[Setting condition]
•
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.
[Clearing condition]
•
The FER flag is not affected and retains its previous
state when the RE bit in SCR is cleared to 0.
When the next serial reception is completed while
RDRF = 1
When 0 is written to ORER after reading ORER = 1
When the stop bit is 0
When 0 is written to FER after reading FER = 1