288
CHAPTER 9 Watch timer
9.6
Program Example of Watch Timer
This section gives a program example of the watch timer.
■
Program Example of Watch Timer
●
Processing specification
An interval interrupt at 2
13
/SCLK (SCLK: sub clock) is generated repeatedly.The internal time is
approximately 1.0s (when sub clock operates at 8.192 kHz).
●
Coding example
ICR07 EQU 0000B7H ;Interrupt control register
WTC EQU 0000AAH ;Watch timer control register
WTOF EQU WTC:4 ;Over flow flag bit
;
;---------Main program-------------------------------------
CODE CSEG
START:
; ;Stack pointer (SP),already initialized
AND CCR,#0BFH ;Interrupt disabled
MOV I:ICR07,#00H ;Interrupt level 0 (storngest)
MOV I:WTC,#10100101B ;Interrupt enabled,
;Clear over flow flag
;Clear watch timer caunter,
;2
13
/SCLK (approx.1.0s)
MOV ILM,#07H ;Setting ILM in PS to level 7
OR CCR,#40H ;Interrupt enabled
LOOP:
.
User processing
.
BRA LOOP
;---------Interrupt program--------------------------------------
WARI:
CLRB I:WTOF ;Clear over flow flag
.
User processing
.
RETI ;Recovery from interrupt processing
CODE ENDS
;---------Vector setting------------------------------------------
VECT CSEG ABS=0FFH
ORG 00FF8CH ;Setting vector to interrupt number #28
DSL WARI
ORG 00FFDCH ;Reset vector setting
DSL START
DB 00H ;Setting to single chip mode
VECT ENDS
END START
Summary of Contents for F2MC-16LX Series
Page 2: ......
Page 3: ...FUJITSU LIMITED F2MC 16LX 16 bit Microcontroller MB90895 series Hardware Manual ...
Page 4: ......
Page 8: ...iv ...
Page 10: ...vi ...
Page 36: ...18 CHAPTER 2 HANDLING DEVICES ...
Page 176: ...158 CHAPTER 3 CPU ...
Page 224: ...206 CHAPTER 5 Timebase timer ...
Page 294: ...276 CHAPTER 8 16 bit reload timer ...
Page 366: ...348 CHAPTER 12 DTP external interrupt ...
Page 398: ...380 CHAPTER 13 8 10 bit A D converter ...
Page 446: ...428 CHAPTER 14 UART0 ...
Page 588: ...570 CHAPTER 17 Address Match Detecting Function ...
Page 626: ...608 CHAPTER 19 512 KBIT FLASH MEMORY ...
Page 676: ...658 APPENDIX Table A 9 3 Bit Operation Instruction Map first byte 6CH ...
Page 678: ...660 APPENDIX Table A 9 5 2 byte Instruction Map first byte 6FH MUL MULW DIVU A A A ...
Page 680: ...662 APPENDIX Table A 9 7 ea Instruction 2 first byte 71H ...
Page 681: ...663 APPENDIX A Instructions Table A 9 8 ea Instruction 3 first byte 72H ...
Page 682: ...664 APPENDIX Table A 9 9 ea Instruction 4 first byte 73H ...
Page 683: ...665 APPENDIX A Instructions Table A 9 10 ea Instruction 5 first byte 74H ...
Page 684: ...666 APPENDIX Table A 9 11 ea Instruction 6 first byte 75H ...
Page 685: ...667 APPENDIX A Instructions Table A 9 12 ea Instruction 7 first byte 76H ...
Page 686: ...668 APPENDIX Table A 9 13 ea Instruction 8 first byte 77H ...
Page 687: ...669 APPENDIX A Instructions Table A 9 14 ea Instruction 9 first byte 78H ...
Page 688: ...670 APPENDIX Table A 9 15 MOVEA RWi ea Instruction first byte 79H ...
Page 689: ...671 APPENDIX A Instructions Table A 9 16 MOV Ri ea Instruction first byte 7AH ...
Page 690: ...672 APPENDIX Table A 9 17 MOVW RWi ea Instruction first byte 7BH ...
Page 691: ...673 APPENDIX A Instructions Table A 9 18 MOV ea Ri Instruction first byte 7CH ...
Page 692: ...674 APPENDIX Table A 9 19 MOVW ea Rwi Instruction first byte 7DH ...
Page 693: ...675 APPENDIX A Instructions Table A 9 20 XCH Ri ea Instruction first byte 7EH ...
Page 694: ...676 APPENDIX Table A 9 21 XCHW RWi ea Instruction first byte 7FH ...
Page 710: ......