369
CHAPTER 18 8-/10-BIT A/D CONVERTER
18.6
Precautions when Using 8-/10-bit A/D Converter
Precautions when using the 8-/10-bit A/D converter are given below:
■
Precautions when Using 8-/10-bit A/D Converter
●
Analog input pin
•
The analog input pins serve as general-purpose I/O ports of port 5 and port 6. When using the pin as an
analog input pin, switch the pin to "analog input pin" according to the setting of the analog input enable
register (ADER5 , ADER6).
•
When using the pin as an analog input pin, write 1 to the bit in the analog input enable register (ADER5,
ADER6) corresponding to the pin to be used and set the pin to "analog input enable".
•
When an intermediate-level signal is inputted with the pin set as a general-purpose I/O port, the input
leakage current flows in the gate. When using the pin as an analog input pin, always set the pin to
"analog input enable".
●
Precaution when starting by external trigger
•
Set the level of the external trigger to inactive ("H" for external trigger) when the A/D start trigger select
bits in the A/D control status register (ADCS: STS1 and STS0) is set the same way as starting the 8-/10-
bit A/D converter by the external trigger. Holding the input value for the start trigger active may cause
the 8-/10-bit A/D converter to start the A/D start trigger select bits in the A/D control status register
(ADCS: STS1 and STS0).
●
Procedure of 8-/10-bit A/D converter and analog input power-on
•
Always apply a power to the 8-/10-bit A/D converter power (AV CC , AVR) and the analog input (AN0
to AN15 pins) after or concurrently with the digital power (V
CC
)-on.
•
Always turn off the 8-/10-bit A/D converter power and the analog input before or concurrently with the
digital power (V
CC
)-down.
•
Note that AVR should not exceed AV
CC
at power on or power down. (Turning on and off the analog
power and digital power simultaneously is enabled.)
●
Power supply voltage of 8-/10-bit A/D converter
•
To prevent latch up, note that the 8-/10-bit A/D converter power (AV
CC
) should not exceed the digital
power (V
CC
) voltage.
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 ...
Page 682: ......