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Appendix B Internal I/O Registers
Rev. 6.00 Sep 12, 2006 page 458 of 526
REJ09B0326-0600
SCSR1—Serial control/status register
H'FFA1
SCI1
Bit
Initial value
Read/Write
7
—
1
—
6
SOL
0
R/W
5
ORER
0
R/(W)
4
—
1
—
3
—
1
—
0
STF
0
R/W
2
—
1
—
1
MTRF
0
R
Extended data bit
Overrun error flag
*
Start flag
0
Indicates that transfer is stopped
Invalid
1
Read
Write
Read
Write
Indicates transfer in progress
Starts a transfer operation
Note: Only a write of 0 for flag clearing is possible.
*
0
[Clearing condition]
After reading 1, cleared by writing 0
1
[Setting condition]
Set if a clock pulse is input after transfer
is complete, when an external clock is used
0
SO
1
pin output level is low
SO
1
pin output level changes to low
SO
1
pin output level is high
SO
1
pin output level changes to high
1
Read
Write
Read
Write
TAIL MARK transmit flag
0
Idle state and 8- or -16-bit data transfer in progress
1
TAIL MARK transmission in progress
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 ...