Section 19 Compare Match Timer (CMT)
Rev.1.00 Dec. 13, 2005 Page 705 of 1286
REJ09B0158-0100
19.4.8 Counter:
Rotary
Switch Operation of Updown-counter
The Updown-counter can operate as a rotary switch. When the falling edge of the control pin is
detected and then the data pin input level is low, the counter is counted up, or the data pin input
level is high, the counter is counted down. Then the timer is counted up, the IE0 flag in CMTIRQS
is set to 1, or the timer is counted down, the IE1 flag in CMTIRQS is set to 1 and the interrupt is
generated when the IEEn bit in CMTCTL is set to 1. If both the count up and count down are
detected, both the IE0 and the IE1 flags are set to 1 and the counter CMTCH0C is updated by the
most recently detected edge.
Pck
CMTCH0C
N
CMTCH0T
operation clock
CMT_CTR1 input
CMT_CTR0 input
Channel 0
Edge interrupt flag
N
+
1
Figure 19.17 Rotary Switch Operation Count-Up Timing
Pck
CMTCH0C
N
CMTCH0T
operation clock
CMT_CTR1 input
CMT_CTR0 input
Channel 1
Edge interrupt flag
N
−
1
Figure 19.18 Rotary Switch Operation Count-Down Timing
Summary of Contents for SH7780 Series
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Page 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Page 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
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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