274
CHAPTER 15 WATCH TIMER
Table 15.3-1 Functions of Watch Timer Control Register (WTC)
Bit Name
Function
bit7
WDCS:
Watchdog clock select bit
This bit selects the operation clock of the watchdog timer.
<Main clock mode or PLL clock mode>
When set to "0": Selects output of watch timer as operation clock of watchdog timer.
When set to "1": Selects output of timebase timer as operation clock of watchdog timer.
<Subclock mode>
Always set this bit to 0 to select the output of the watch timer.
Note:
The watch timer and the timebase timer operate asynchronously. When the WDCS bit is
changed from 0 to 1, the watchdog timer may run fast. The watchdog timer must be
cleared before and after changing the WDCS bit.
bit6
SCE:
Oscillation stabilization wait
time end bit
This bit indicates that the oscillation stabilization wait time of the subclock ends.
When cleared to "0": Subclock in oscillation stabilization wait state
When set to "1" : Subclock oscillation stabilization wait time ends
•
The oscillation stabilization wait time of the subclock is fixed at 2
14
/SCLK (SCLK:
subclock frequency).
bit5
WTIE:
Overflow interrupt enable bit
This bit enables or disables generation of an interrupt request when the watch timer counter
overflows (carries).
When set to "0": Interrupt request not generated even at overflow (WTOF=1)
When set to "1": Interrupt request generated at overflow (WTOF = 1)
bit4
WTOF:
Overflow flag bit
This bit is set to "1" when the counter value of the watch timer reaches the value set by the
interval time select bit.
When an overflow carry occurs (WTOF = 1) with interrupt request enabled (WTIE = 1), an
interrupt request is generated.
When set to "0": Clears watch timer counter
When set to "1": No effect
•
The overflow flag bit is set to "1" when the bit of the watch timer counter corresponding
to the interval time set by the interval time select bits (WTC2 to WTC0) overflows (car-
ries).
bit3
WTR:
Watch timer clear bit
This bit clears the watch timer counter.
When set to "0": Clears watch timer counter to "0000
H
".
When set to "1": No effect
Read: 1 is always read.
bit2
to
bit0
WTC2, WTC1, WTC0:
Interval time select bits
These bits set the interval time of the watch timer.
•
When the interval time set by the WTC2 to WTC0 bits is reached, the corresponding bit
of the watch timer counter overflows (carries) and the overflow flag bit is set
(WTC:WTOF = 1).
•
To set the WTC2 to WTC0 bits, set the WTOF bit to 0.
Содержание F2MCTM-16LX
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Страница 3: ...FUJITSU LIMITED F2MCTM 16LX 16 BIT MICROCONTROLLER MB90360 Series HARDWARE MANUAL ...
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Страница 42: ...26 CHAPTER 1 OVERVIEW ...
Страница 66: ...50 CHAPTER 2 CPU MOV ILM imm8 The instruction is executed normally but the prefix affects the next instruction ...
Страница 70: ...54 CHAPTER 2 CPU ...
Страница 134: ...118 CHAPTER 6 CLOCK SUPERVISOR ...
Страница 176: ...160 CHAPTER 8 LOW POWER CONSUMPTION MODE ...
Страница 194: ...178 CHAPTER 10 I O PORTS ...
Страница 252: ...236 CHAPTER 13 16 Bit I O TIMER ...
Страница 282: ...266 CHAPTER 14 16 BIT RELOAD TIMER ...
Страница 295: ...279 CHAPTER 15 WATCH TIMER ORG 00FFDCH Reset vector set DSL START DB 00H Set to single chip mode VECT ENDS END START ...
Страница 296: ...280 CHAPTER 15 WATCH TIMER ...
Страница 386: ...370 CHAPTER 18 8 10 BIT A D CONVERTER ...
Страница 426: ...410 CHAPTER 20 LIN UART Figure 20 5 2 ORE Flag Set Timing RDRF ORE Reception data ...
Страница 540: ...524 CHAPTER 22 ADDRESS MATCH DETECTION FUNCTION ...
Страница 568: ...552 CHAPTER 24 512K BIT FLASH MEMORY ...
Страница 633: ...617 APPENDIX B Instructions Table B 9 3 Bit Operation Instruction Map first byte 6CH ...
Страница 634: ...618 APPENDIX Table B 9 4 Character String Operation Instruction Map first byte 6EH ...
Страница 635: ...619 APPENDIX B Instructions Table B 9 5 2 byte Instruction Map first byte 6FH MUL MULW DIVU A A A ...
Страница 637: ...621 APPENDIX B Instructions Table B 9 7 ea Instruction 2 first byte 71H ...
Страница 638: ...622 APPENDIX Table B 9 8 ea Instruction 3 first byte 72H ...
Страница 639: ...623 APPENDIX B Instructions Table B 9 9 ea Instruction 4 first byte 73H ...
Страница 640: ...624 APPENDIX Table B 9 10 ea Instruction 5 first byte 74H ...
Страница 641: ...625 APPENDIX B Instructions Table B 9 11 ea Instruction 6 first byte 75H ...
Страница 642: ...626 APPENDIX Table B 9 12 ea Instruction 7 first byte 76H ...
Страница 643: ...627 APPENDIX B Instructions Table B 9 13 ea Instruction 8 first byte 77H ...
Страница 644: ...628 APPENDIX Table B 9 14 ea Instruction 9 first byte 78H ...
Страница 645: ...629 APPENDIX B Instructions Table B 9 15 MOVEA RWi ea Instruction first byte 79H ...
Страница 646: ...630 APPENDIX Table B 9 16 MOV Ri ea Instruction first byte 7AH ...
Страница 647: ...631 APPENDIX B Instructions Table B 9 17 MOVW RWi ea Instruction first byte 7BH ...
Страница 648: ...632 APPENDIX Table B 9 18 MOV Ri ea Instruction first byte 7CH ...
Страница 649: ...633 APPENDIX B Instructions Table B 9 19 MOVW ea Rwi Instruction first byte 7DH ...
Страница 650: ...634 APPENDIX Table B 9 20 XCH Ri ea Instruction first byte 7EH ...
Страница 651: ...635 APPENDIX B Instructions Table B 9 21 XCHW RWi ea Instruction first byte 7FH ...
Страница 664: ...648 APPENDIX ...
Страница 665: ...649 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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