120
CHAPTER 7 RESETS
7.1
Resets
If a reset is generated, the CPU immediately stops the current execution process and
waits for the reset to be cleared. The CPU then begins processing at the address
indicated by the reset vector.
The four causes of a reset are as follows
• Power-on reset
• External reset request via the RST pin
• Software reset request
• Watchdog timer overflow
• Low voltage detection reset request (product with "T"-suffix)
• CPU operation detection reset request (product with "T"-suffix)
• Clock supervisor reset request (MB90367/T(S))
■
Causes of a Reset
Table 7.1-1 lists the causes of a reset.
●
Power-on reset
A power-on reset is generated when the power is turned on. The oscillation stabilization wait times is fixed
to 2
16
oscillation clock cycles (2
16
/HCLK) (approx. 16.38 ms, oscillating at 4 MHz). When the oscillation
Table 7.1-1 Cause of a Reset
Reset Cause
Machine
clock
Watchdog
timer
Oscillation
stabilization wait
Power-on
At power on
Main clock (MCLK)
Stop
Yes
External pin
L level input to RST pin
Main clock (MCLK)
Stop
None
Software
Write "0" to internal reset signal
generation bit (RST) of low-power
consumption mode control register
(LPMCR)
Main clock (MCLK)
Stop
None
Watchdog timer
Watchdog timer overflow
Main clock (MCLK)
Stop
None
Low voltage
detection reset
(with "T"-suffix)
When low voltage (4.0 V
±
0.3 V) is
detected
Main clock (MCLK)
Stop
None
CPU operation
detection reset
(with "T"-suffix)
When CPU operation detection
counter overflows
Main clock (MCLK)
Stop
None
Clock supervisor
reset
When failure of main clock/subclock is
detected
Internal CR
oscillation clock
Stop
None
MCLK: Main clock (oscillation clock frequency divided by 2)
Summary of Contents for F2MCTM-16LX
Page 2: ......
Page 3: ...FUJITSU LIMITED F2MCTM 16LX 16 BIT MICROCONTROLLER MB90360 Series HARDWARE MANUAL ...
Page 4: ......
Page 42: ...26 CHAPTER 1 OVERVIEW ...
Page 70: ...54 CHAPTER 2 CPU ...
Page 134: ...118 CHAPTER 6 CLOCK SUPERVISOR ...
Page 176: ...160 CHAPTER 8 LOW POWER CONSUMPTION MODE ...
Page 194: ...178 CHAPTER 10 I O PORTS ...
Page 252: ...236 CHAPTER 13 16 Bit I O TIMER ...
Page 282: ...266 CHAPTER 14 16 BIT RELOAD TIMER ...
Page 296: ...280 CHAPTER 15 WATCH TIMER ...
Page 386: ...370 CHAPTER 18 8 10 BIT A D CONVERTER ...
Page 426: ...410 CHAPTER 20 LIN UART Figure 20 5 2 ORE Flag Set Timing RDRF ORE Reception data ...
Page 540: ...524 CHAPTER 22 ADDRESS MATCH DETECTION FUNCTION ...
Page 568: ...552 CHAPTER 24 512K BIT FLASH MEMORY ...
Page 633: ...617 APPENDIX B Instructions Table B 9 3 Bit Operation Instruction Map first byte 6CH ...
Page 634: ...618 APPENDIX Table B 9 4 Character String Operation Instruction Map first byte 6EH ...
Page 637: ...621 APPENDIX B Instructions Table B 9 7 ea Instruction 2 first byte 71H ...
Page 638: ...622 APPENDIX Table B 9 8 ea Instruction 3 first byte 72H ...
Page 639: ...623 APPENDIX B Instructions Table B 9 9 ea Instruction 4 first byte 73H ...
Page 640: ...624 APPENDIX Table B 9 10 ea Instruction 5 first byte 74H ...
Page 641: ...625 APPENDIX B Instructions Table B 9 11 ea Instruction 6 first byte 75H ...
Page 642: ...626 APPENDIX Table B 9 12 ea Instruction 7 first byte 76H ...
Page 643: ...627 APPENDIX B Instructions Table B 9 13 ea Instruction 8 first byte 77H ...
Page 644: ...628 APPENDIX Table B 9 14 ea Instruction 9 first byte 78H ...
Page 645: ...629 APPENDIX B Instructions Table B 9 15 MOVEA RWi ea Instruction first byte 79H ...
Page 646: ...630 APPENDIX Table B 9 16 MOV Ri ea Instruction first byte 7AH ...
Page 647: ...631 APPENDIX B Instructions Table B 9 17 MOVW RWi ea Instruction first byte 7BH ...
Page 648: ...632 APPENDIX Table B 9 18 MOV Ri ea Instruction first byte 7CH ...
Page 649: ...633 APPENDIX B Instructions Table B 9 19 MOVW ea Rwi Instruction first byte 7DH ...
Page 650: ...634 APPENDIX Table B 9 20 XCH Ri ea Instruction first byte 7EH ...
Page 651: ...635 APPENDIX B Instructions Table B 9 21 XCHW RWi ea Instruction first byte 7FH ...
Page 664: ...648 APPENDIX ...
Page 665: ...649 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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