8
8-4
Ver.0.10
INPUT/OUTPUT PORTS AND PIN FUNCTIONS
8.2 Selecting Pin Functions
8.2 Selecting Pin Functions
Each input/output port serves dual functions sharing the pin with other internal peripheral I/O or
extended external bus signal line (or triple functions sharing the pin with two or more peripheral I/O
functions). Pin functions are selected depending on the device's operation mode you choose or by
setting the input/output port's Operation Mode Register.
P0-P4, P224, and P225, when the CPU is set to operate in extended external mode or processor
mode, all are switched to serve as signal pins for external access. The CPU operation mode is
determined by setting the MOD0 and MOD1 pins (see the table below).
Table 8.2.1 CPU Operation Mode and Pin Functions of P0-P4, P224, and P225
MOD0
MOD1
Operation Mode
Pin Functions of P0-P4, P224, and P225
VSS
VSS
Single-chip mode
input/output port pin
VSS
VCCE
Extended external mode
Extended external signal pin
VCCE
VSS
Processor mode
VCCE
VCCE
Reserved (Use inhibited)
—
Note: VCCE and VSS are connected to +5 V and GND, respectively.
P6-P22 (except P64, P221, P224, and P225) have their pin functions switched between input/
output port pins and internal peripheral I/O pins by setting each port's Operation Mode Register. If
any internal peripheral I/O has multiple pin functions, you need to set the register provided for that
peripheral I/O to select the desired pin function.
Note that settings of FP pin and MOD1 pin during internal flash memory write operation do not
affect the pin functions.
Содержание M32170F3VFP
Страница 19: ...CHAPTER 1 CHAPTER 1 OVERVIEW 1 1 Outline of the 32170 1 2 Block Diagram 1 3 Pin Function 1 4 Pin Layout ...
Страница 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Страница 56: ...2 2 14 Ver 0 10 This is a blank page ...
Страница 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Страница 192: ...6 6 58 Ver 0 10 INTERNAL MEMORY 6 9 Precautions to Be Taken When Rewriting Flash Memory This is a blank page ...
Страница 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Страница 498: ...10 10 228 Ver 0 10 MULTIJUNCTION TIMERS 10 9 TOM Output related 16 bit Timer This is a blank page ...
Страница 550: ...11 11 52 Ver 0 10 A D CONVERTERS 11 4 Precautions on Using A D Converters This is a blank page ...
Страница 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Страница 710: ...14 14 16 Ver 0 10 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 746: ...16 16 20 Ver 0 10 WAIT CONTROLLER 16 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 757: ...CHAPTER 18 CHAPTER 18 OSCILLATION CIRCUIT 18 1 Oscillator Circuit 18 2 Clock Generator Circuit ...
Страница 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Страница 798: ...19 19 36 Ver 0 10 JTAG 19 6 Precautions about Board Design when Connecting JTAG This is a blank page ...
Страница 830: ...21 21 24 Ver 0 10 PRELIMINARY PRELIMINARY This is a blank page ELECTRICAL CHARACTERISTICS 21 5 AC Characteristics ...
Страница 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Страница 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 837: ...Appendix 2 1 32170 Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...