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Section 9 Timers
Rev. 6.00 Sep 12, 2006 page 255 of 526
REJ09B0326-0600
Read Access:
In access to FRC and ICRA to ICRD, when the upper byte is read the upper-byte
data is transferred directly to the CPU and the lower-byte data is transferred to TEMP. Next, when
the lower byte is read, the lower-byte data in TEMP is transferred to the CPU.
In access to OCRA or OCRB, when the upper byte is read the upper-byte data is transferred
directly to the CPU, and when the lower byte is read the lower-byte data is transferred directly to
the CPU.
Figure 9.19 shows an example of the reading of FRC when FRC contains H'AAFF.
CPU
(H'AA)
Read upper byte
Read lower byte
CPU
(H'FF)
Bus
interface
Bus
interface
Module data bus
Module data bus
TEMP
(H'FF)
FRCH
(H'AA)
FRCL
(H'FF)
TEMP
(H'FF)
FRCH
( AB )
FRCL
( 00 )
Note: H'AB00 if counter has been updated once.
Figure 9.19 Read Access to FRC (FRC
→
→
→
→
CPU)
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 ...