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CHAPTER 14 MULTI-FUNCTIONAL TIMER
14.6.1
Operation of 16-bit free-run timer
The 16-bit free-run timer starts counting up from counter value specified in timer data
register (TCDT) after a reset has been completed. The counter value is used as the
reference time for 16-bit output compare and 16-bit input capture.
■
Timer Clear
The counter value of 16-bit free-run timer is cleared in the following conditions:
•
When a match with compare clear register is detected in up-count mode (TCCSL:MODE=0)
•
When "1" is written to the SCLR bit of the TCCSL register during operation. The timer will be cleared
at the valid edge of count clock.
Note:
If writing "0" to the SCLR bit before a valid edge of count clock, the SCLR bit is cleared and the timer
would not be cleared to "0000
H
".
•
When "0000
H
" is written to the TCDT register during stop.
•
Reset
By a reset, the counter is immediately cleared. By a software clear or a match with compare clear register,
the counter is cleared in synchronization with the count timing. If the
Figure 14.6-1 16-bit Free-run Timer Clear Timing
N
Compare
register value
Compare match
Counter value
N -1
N
0000
0001
0000
0001
0002
TCCS : SCLR
writing
“
1
”
cleared by hardward
writing
“
0
”
writing
“
1
”
φ
Summary of Contents for MB90460 Series
Page 1: ...The following document contains information on Cypress products ...
Page 3: ......
Page 5: ......
Page 9: ...iv ...
Page 41: ...22 CHAPTER 1 OVERVIEW ...
Page 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Page 83: ...64 CHAPTER 3 CPU ...
Page 95: ...76 CHAPTER 4 RESET ...
Page 107: ...88 CHAPTER 5 CLOCK ...
Page 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Page 175: ...156 CHAPTER 7 INTERRUPT ...
Page 181: ...162 CHAPTER 8 MODE SETTING ...
Page 223: ...204 CHAPTER 9 I O PORT ...
Page 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Page 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Page 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Page 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Page 485: ...466 CHAPTER 16 PWC Timer ...
Page 531: ...512 CHAPTER 17 UART ...
Page 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Page 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Page 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Page 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Page 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Page 715: ...696 APPENDIX ...
Page 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Page 739: ......