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Section 10 Serial Communication Interface
Rev. 6.00 Sep 12, 2006 page 301 of 526
REJ09B0326-0600
Bit 6
Receive Data Register Full (RDRF):
Bit 6 indicates that received data is stored in RDR.
Bit 6: RDRF
Description
0
There is no receive data in RDR
(initial value)
Clearing conditions:
•
After reading RDRF = 1, cleared by writing 0 to RDRF
•
When RDR data is read by an instruction
1
There is receive data in RDR
Setting condition:
When reception ends normally and receive data is transferred from RSR to
RDR
Note: If an error is detected in the receive data, or if the RE bit in SCR3 has been cleared to 0,
RDR and bit RDRF are not affected and retain their previous state.
Note that if data reception is completed while bit RDRF is still set to 1, an overrun error
(OER) will result and the receive data will be lost.
Bit 5
Overrun Error (OER):
Bit 5 indicates that an overrun error has occurred during
reception.
Bit 5: OER
Description
0
Reception in progress or completed
*
1
(initial
value)
Clearing condition:
After reading OER = 1, cleared by writing 0 to OER
1
An overrun error has occurred during reception
*
2
Setting condition:
When reception is completed with RDRF set to 1
Notes: 1. When bit RE in SCR3 is cleared to 0, bit OER is not affected and retains its previous
state.
2. RDR retains the receive data it held before the overrun error occurred, and data
received after the error is lost. Reception cannot be continued with bit OER set to 1,
and in synchronous mode, transmission cannot be continued either.
Summary of Contents for F-ZTAT H8/3642A Series
Page 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Page 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Page 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Page 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Page 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Page 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Page 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Page 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Page 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...