8
8-30
Rev.1.0
■
Port Input Function Enable Register (PIEN)
<Address: H'0080 0745>
<When reset: H'00>
D
Bit Name
Function
R
W
8-14
No functions assigned
0
–
15
PIEN0
0: Disables input (to prevent current
(Port input function enable bit)
from flowing in)
1: Enables input
This register is used to prevent electric current from flowing into the port input pin. Because the
ports are disabled against input after reset, they need to be enabled for input by setting this
register bit to 1.
During boot mode, the pins shared with serial I/O function are enabled for input. Therefore, when
rewriting the flash memory via serial communication, they can be protected against the current
flowing in from pins other than the serial I/O function by setting this register bit to 0.
The pins that can be controlled by the port input function enable bit in each mode are listed below.
Table 8.3.1 Pins Controllable by Port Input Function Enable Bit
Mode Name
Controllable Pin
Noncontrollable Pin
P00-P07, P10-P17, P20-P27
P64, P93, P97
P30-P37, P41-P47, P61-P63
P124-P127
Single chip
P70-P77, P82-P87, P94-P96
P130-P137, P221
P100-P107, P110-P117,
FP, MOD0, MOD1, RESET
P150, P153, P174, P175
P220, P225
P61-P63, P70-P77, P82-P87
P00-P07, P10-P17
External extended
P94-P96, P100-P107, P110-P117
P20-P27, P30-P37
Microprocessor
P150, P153, P174, P175, P220
P41-P47, P64,
P93,P97
P124-P127, P130-P137
P221, P225,
FP,MOD0,MOD1,RESET
P00-P07, P10-P17, P20-P27
P64, P82-P87, P93,P97,
P30-P37, P41-P47, P61-P63
P124-P127, P130-P137
Boot
P67, P70-P77,P94-P96
P174, P175, P221, FP
(Single chip)
P100-P107, P110-P117,
MOD0, MOD1, RESET
P140-P147, P150-P157
P160-P167, P172-P173, P180-P187
P190-P197, P210-P217, P220
P222-P225
INPUT/OUTPUT PORTS AND PIN FUNCTIONS
8.3 Input/Output Port Related Registers
D8
9
10
11
12
13
14
D15
PIEN0
Содержание 32172
Страница 20: ... This is a blank page 16 ...
Страница 21: ...1 1 Overview 1 2 Block Diagram 1 3 Pin Functions 1 4 Pin Layout CHAPTER 1 CHAPTER 1 OVERVIEW ...
Страница 44: ...1 1 24 Rev 1 0 This is a blank page Overview 1 4 Pin Layout ...
Страница 58: ...2 2 14 Rev 1 0 This is a blank page CPU 2 6 Data Formats ...
Страница 122: ...4 4 26 Rev 1 0 This is a blank page EIT 4 13 Precautions on EIT ...
Страница 200: ...7 7 6 Rev 1 0 This is a blank page RESET 7 4 Precautions to Be Taken Immediately after Reset ...
Страница 240: ...8 8 40 Rev 1 0 This is a blank page INPUT OUTPUT PORTS AND PIN FUNCTIONS 8 5 Precautions on Input Output Ports ...
Страница 298: ...9 9 58 Rev 1 0 This is a blank page DMAC 9 4 Precautions on Using DMAC ...
Страница 416: ...10 10 118 Rev 1 0 This is a blank page INPUT OUTPUT TIMERS 10 6 TOM Output Related 16 bit Timers ...
Страница 658: ...14 14 16 Rev 1 0 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 718: ...16 16 16 Rev 1 0 This is a blank page D A CONVERTERS 16 3 Functional Description of the D A Converters ...
Страница 766: ...18 18 22 Rev 1 0 WAIT CONTROLLER 18 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 776: ...19 19 10 Rev 1 0 RAM BACKUP MODE 19 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 777: ...CHAPTER 20 CHAPTER 20 OSCILLATION CIRCUIT 20 1 Oscillator Circuit 20 2 Clock Generator Circuit ...
Страница 782: ...20 20 6 Rev 1 0 OSCILLATION CIRCUIT 20 2 Clock Generator Circuit This is a blank page ...
Страница 856: ...23 23 26 Rev 1 0 This is a blank page ELECTRICAL CHARACTERISTICS 23 6 AC Characteristics ...
Страница 857: ...24 1 A D Conversion Characteristics CHAPTER 24 CHAPTER 24 STANDARD CHARACTERISTICS ...
Страница 859: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 861: ...Appendix 2 1 M32R E Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 865: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...