Datasheet

Section 16 Serial Communication Interface (SCI, IrDA)
(The H8S/2695 is not equipped with an IrDA function)
R01UH0166EJ0600 Rev. 6.00 Page 769 of 1434
Mar 02, 2011
H8S/2633 Group, H8S/2633 F-ZTAT
TM
,
H8S/2633R F-ZTAT
TM
, H8S/2695
Table 16.11 Receive Errors and Conditions for Occurrence
Receive Error Abbreviation Occurrence Condition Data Transfer
Overrun error ORER When the next data reception is
completed while the RDRF flag in
SSR is set to 1
Receive data is not
transferred from RSR to
RDR.
Framing error FER When the stop bit is 0 Receive data is transferred
from RSR to RDR.
Parity error PER When the received data differs
from the parity (even or odd) set in
SMR
Receive data is transferred
from RSR to RDR.
Figure 16.8 shows an example of the operation for reception in asynchronous mode.
RDRF
FER
0
1 frame
D0 D1 D7 0/1 1 0 D0 D1 D7 0/1
0
1 1
DataStart
bit
Parity
bit
Stop
bit
Start
bit
Data Parity
bit
Stop
bit
RXI interrupt
request
generated
ERI interrupt request
generated by framing
error
Idle state
(mark state)
RDR data read and RDRF
flag cleared to 0 in RXI
interrupt service routine
Figure 16.8 Example of SCI Operation in Reception
(Example with 8-Bit Data, Parity, One Stop Bit)