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179
CHAPTER 9 I/O PORT
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Block Diagram of Port 2 Pins
Figure 9.5-1 is a block diagram of port 2 pins.
Figure 9.5-1 Block Diagram of Port 2 Pins
When the resource output enable bit is set, the port is forcibly caused to function as resource
output pins regardless of the value in the DDR2 register.
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Port 2 Registers
Port 2 registers are PDR2 and DDR2. The bits making up each register correspond to the port 2 pins on a
one-to-one basis. Table 9.5-2 lists the port 2 pins and their corresponding register bits.
Inter
nal
data bus
Port data register (PDR)
PDR read
PDR write
Output latch
DDR read
DDR write
Direction latch
Port data direction register (DDR)
Pin
Standby control (SPL = 1)
Resource output
Resource output enable
Resource input
Table 9.5-2 Port 2 Pins and their Corresponding Register Bits
Port
Register bits and corresponding port pins
Port 2
PDR2, DDR2
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Corresponding pin
P27
P26
P25
P24
P23
P22
P21
P20
Содержание MB90460 Series
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Страница 41: ...22 CHAPTER 1 OVERVIEW ...
Страница 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Страница 83: ...64 CHAPTER 3 CPU ...
Страница 95: ...76 CHAPTER 4 RESET ...
Страница 107: ...88 CHAPTER 5 CLOCK ...
Страница 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Страница 175: ...156 CHAPTER 7 INTERRUPT ...
Страница 181: ...162 CHAPTER 8 MODE SETTING ...
Страница 223: ...204 CHAPTER 9 I O PORT ...
Страница 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Страница 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Страница 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Страница 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Страница 485: ...466 CHAPTER 16 PWC Timer ...
Страница 531: ...512 CHAPTER 17 UART ...
Страница 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Страница 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Страница 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Страница 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Страница 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
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Страница 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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