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CHAPTER 14 MULTI-FUNCTIONAL TIMER
■
Interrupt Mask Function
The number of times of Interrupt source can be masked by setting TCCSH:MSI2 to MSI0. MSI2 to MSI0
configure a 3-bit reload down counter, which reloads when its count value reaches "000
B
". Count value can
also be loaded by writing directly to MSI2 to MSI0. The mask count equals the value set in MSI2 to MSI0
and there is no interrupt source will be masked when MSI2 to MSI0 equals "000
B
"
The interrupt source depends on the count mode (TCCSL:MODE). In up-count mode, only compare clear
interrupt can be masked, zero detect interrupt is generated in every zero detection. In up-down count mode,
only zero detect interrupt can be masked, compare clear interrupt is generated in every compare clear.
Note:
Software clear (TCCSL:SCLR=1) will not generate zero detection.
Figure 14.6-8 Compare Clear Interrupt masked in Up-count Mode
FFFF
H
BFFF
H
7FFF
H
3FFF
H
0000
H
Counter value
Time
Reset
Timer starts
Compare clear match
1st
2nd
3rd
4th
TCCSH:MSI2:0=000
B
TCCSH:MSI2:0=001
B
TCCSH:MSI2:0=010
B
Compare
clear
interrupt
Zero detect interrupt
5th
6th
Software
clear
*
Both zero detect interrupt and compare clear interrupt are software cleared
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: ......