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CHAPTER 9 I/O PORT
9.5
Port 2
Port 2 is a general-purpose I/O port. It can also be used for resource I/O. The port pins
can be switched in units of bits between the I/O port and the resource. This section
focuses on the general I/O port function. This section also provides the configuration of
port 2, lists its pins, shows a block diagram of the pins, and describes the
corresponding registers.
■
Port 2 Configuration
Port 2 consists of the following:
•
General-purpose I/O pins/resource I/O pins (P20/TIN1 to P27/IN3)
•
Port 2 data register (PDR2)
•
Port 2 data direction register (DDR2)
■
Port 2 Pins
The port 2 I/O pins are also used as resource I/O pins. The pins cannot be used as general-purpose I/O port
pins when they are used as resource I/O pins. Table 9.5-1 lists the port 2 pins.
See "1.7 I/O Circuit Types", for information on the circuit types.
Table 9.5-1 Port 2 Pins
Port
Pin
Port function
Resource function
I/O form
Circuit
type
Input
Output
Port 2
P20/TIN1
P20
General-
purpose I/O
TIN1
16-bit reload timer 1input
CMOS
(hysteresis)
CMOS
F
P21/TO1
P21
TO1
16-bit reload timer 1 output
P22/PWI1
P22
PWI1
PWC1 input
P23/PWO1
P23
PWO1
PWC1 output
P24/IN0
P24
IN0
Input capture channel 0 input
P25/IN1
P25
IN1
Input capture channel 1 input
P26/IN2
P26
IN2
Input capture channel 2 input
P27/IN3
P27
IN3
Input capture channel 3 input
Summary of Contents for MB90460 Series
Page 1: ...The following document contains information on Cypress products ...
Page 3: ......
Page 5: ......
Page 9: ...iv ...
Page 41: ...22 CHAPTER 1 OVERVIEW ...
Page 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Page 83: ...64 CHAPTER 3 CPU ...
Page 95: ...76 CHAPTER 4 RESET ...
Page 107: ...88 CHAPTER 5 CLOCK ...
Page 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Page 175: ...156 CHAPTER 7 INTERRUPT ...
Page 181: ...162 CHAPTER 8 MODE SETTING ...
Page 223: ...204 CHAPTER 9 I O PORT ...
Page 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Page 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Page 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Page 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Page 485: ...466 CHAPTER 16 PWC Timer ...
Page 531: ...512 CHAPTER 17 UART ...
Page 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Page 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Page 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Page 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Page 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Page 715: ...696 APPENDIX ...
Page 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Page 739: ......