Section 18 Timer Unit (TMU)
Rev.1.00 Dec. 13, 2005 Page 669 of 1286
REJ09B0158-0100
18.4 Operation
Each channel has a 32-bit timer counter (TCNT) and a 32-bit timer constant register (TCOR).
Each TCNT performs count-down operation. The channels have an auto-reload function that
allows cyclic count operations, and can also perform external event counting. Channel 2 also has
an input capture function.
18.4.1 Counter
Operation
When one of bits STR0 to STR2 in TSTR is set to 1, the TCNT for the corresponding channel
starts counting. When TCNT underflows, the UNF flag in TCR is set. If the UNIE bit in TCR is
set to 1 at this time, an interrupt request is sent to the CPU. At the same time, the value is copied
from TCOR into TCNT, and the count-down continues (auto-reload function).
(1) Example of Count Operation Setting Procedure
Figure 18.2 shows an example of the count operation setting procedure.
Summary of Contents for SH7780 Series
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Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
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Page 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Page 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Page 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Page 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Page 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Page 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Page 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Page 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Page 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Page 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Page 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
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