268
CHAPTER 15 WATCH TIMER
15.1
Overview of Watch Timer
The watch timer is a 15-bit free-run counter that increments in synchronization with the
subclock.
• Eight interval times can be selected and an interrupt request can be generated for
each interval time.
• An operation clock can be supplied to the oscillation stabilization wait time timer of
the subclock and the watchdog timer.
• The subclock is always used as a count clock regardless of the settings of the clock
select register (CKSCR).
■
Interval Timer Function
•
When the watch timer reaches the interval time set by the interval time select bits (WTC:WTC2 to
WTC0), the bit corresponding to the interval time of the watch timer counter overflows (carries) and the
overflow flag bit is set (WTC:WTOF = 1).
•
When the overflow flag bit is set (WTC:WTOF = 1) with interrupt enabled when an overflow occurs
(WTC:WTIE = 1), an interrupt request is generated.
•
The interval time of the watch timer can be selected from eight types shown in Table 15.1-1 .
Table 15.1-1 Interval Times of Watch Timer
Subclock Cycle
Interval Time
SCLK(122
µ
s)
2
8
/SCLK(31.25 ms)
2
9
/SCLK(62.5 ms)
2
10
/SCLK(125 ms)
2
11
/SCLK(250 ms)
2
12
/SCLK(500 ms)
2
13
/SCLK(1.0 s)
2
14
/SCLK(2.0 s)
2
15
/SCLK(4.0 s)
SCLK: Subclock frequency
The parenthesized values are provided when the subclock operates at 8.192 kHz. Please consider the frequency
difference of built-in CR oscillation when you use built-in CR oscillation clock as a sub-clock.
Содержание F2MCTM-16LX
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Страница 3: ...FUJITSU LIMITED F2MCTM 16LX 16 BIT MICROCONTROLLER MB90360 Series HARDWARE MANUAL ...
Страница 4: ......
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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