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Appendix B Internal I/O Registers
Rev. 6.00 Sep 12, 2006 page 457 of 526
REJ09B0326-0600
SCR1—Serial control register 1
H'FFA0
SCI1
Bit
Initial value
Read/Write
7
SNC1
0
R/W
6
SNC0
0
R/W
5
MRKON
0
R/W
4
LTCH
0
R/W
3
CKS3
0
R/W
0
CKS0
0
R/W
2
CKS2
0
R/W
1
CKS1
0
R/W
Operation mode select
Clock source select (CKS3)
0
Clock source is prescaler S, and pin SCK is output pin
1
Clock source is external clock, and pin SCK is input pin
LATCH TAIL select
0
HOLD TAIL is output
1
LATCH TAIL is output
TAIL MARK control
0
TAIL MARK is not output (synchronous mode)
1
TAIL MARK is output (SSB mode)
0
8-bit synchronous transfer mode
16-bit synchronous transfer mode
1
0
1
0
1
Continuous clock output mode
Reserved
Clock select (CKS2 to CKS0)
Bit 2
CKS2 CKS1 CKS0
Bit 1
Bit 0
0
φ
/1024
φ
/256
1
1
0
φ
/64
φ
/32
1
φ
/16
1
0
0
1
φ
/8
0
0
φ
/4
1
0
1
φ
/2
φ
= 5 MHz
204.8 µs
51.2 µs
12.8 µs
6.4 µs
3.2 µs
1.6 µs
0.8 µs
—
φ
= 2.5 MHz
409.6 µs
102.4 µs
25.6 µs
12.8 µs
6.4 µs
3.2 µs
1.6 µs
0.8 µs
Synchronous
Serial Clock Cycle
1
1
Prescaler
Division
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 ...