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Section 10 Serial Communication Interface
Rev. 6.00 Sep 12, 2006 page 278 of 526
REJ09B0326-0600
Features
•
Choice of 8-bit or 16-bit data length
•
Choice of eight internal clock sources (
φ
/1024,
φ
/256,
φ
/64,
φ
/32,
φ
/16,
φ
/8,
φ
/4,
φ
/2) or an
external clock
•
Interrupt requested at completion of transfer
•
Choice of HOLD mode or LATCH mode in SSB mode.
Block Diagram
Figure 10.1 shows a block diagram of SCI1.
φ
SCK
1
SI
1
SO
1
SCR1
SCSR1
SDRU
SDRL
PSS
Transfer bit counter
Transmit/receive
control circuit
Internal data bus
Legend:
SCR1:
SCSR1:
SDRU:
SDRL:
IRRS1:
PSS:
Serial control register 1
Serial control/status register 1
Serial data register U
Serial data register L
SCI1 interrupt request flag
Prescaler S
IRRS1
Figure 10.1 SCI1 Block Diagram
Summary of Contents for F-ZTAT H8/3642A Series
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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 ...