h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 456

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Serial Communication Interface (SCI, IrDA)
Bit 6—Receive Data Register Full (RDRF): Indicates that the received data is stored in RDR.
Bit 6
RDRF
0
1
Note: RDR and the RDRF flag are not affected and retain their previous values when an error is
Bit 5—Overrun Error (ORER): Indicates that an overrun error occurred during reception,
causing abnormal termination.
Bit 5
ORER
0
1
Notes: 1. The ORER flag is not affected and retains its previous state when the RE bit in SCR is
Rev. 4.00 Jun 06, 2006 page 402 of 1004
REJ09B0301-0400
detected during reception or when the RE bit in SCR is cleared to 0.
If reception of the next data is completed while the RDRF flag is still set to 1, an overrun
error will occur and the receive data will be lost.
2. The receive data prior to the overrun error is retained in RDR, and the data received
cleared to 0.
subsequently is lost. Also, subsequent serial reception cannot be continued while the
ORER flag is set to 1. In synchronous mode, serial transmission cannot be continued,
either.
Description
[Clearing conditions]
[Setting condition]
When serial reception ends normally and receive data is transferred from RSR to RDR
Description
[Clearing condition]
When 0 is written in ORER after reading ORER = 1
[Setting condition]
When the next serial reception is completed while RDRF = 1 *
When 0 is written in RDRF after reading RDRF = 1
When the DTC is activated by an RXI interrupt and reads data from RDR
2
(Initial value) *
(Initial value)
1