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CHAPTER 9 I/O PORT
9.9.1
Port 6 Registers (PDR6 and DDR6)
This section describes the port 6 registers.
■
Functions of Port 6 Registers
●
Port 6 data register (PDR6)
The PDR6 register indicates the state of each pin of port 6.
●
Port 6 data direction register (DDR6)
The DDR6 register specifies the direction of a data flow (input or output) at each pin (bit) of port 6. When
a DDR6 register bit is "1", the corresponding port (pin) is set as an output port. When the bit is "0", the
port (pin) is set as an input port.
Notes:
•
When a resource having output pins is used, the port functions as resource output pins regardless
of the value in the DDR6 register as long as the resource output enable bit corresponding to the
pins is set.
•
To use a resource having input pins, reset the DDR6 register bit corresponding to each resource
input pin to "0" to place the port in input mode.Table 9.9-3 lists the functions of the port 6
registers.
Table 9.9-3 Port 6 Register Functions
Register
Data
During
reading
During writing
Read/
Write
Address
Initial value
Port 6 data
register (PDR6)
0
The pin is at
the low level.
The output latch is loaded with "0".
When the pin functions as an
output port, the pin is set to the low
level.
R/W
000006
H
----XXXX
B
1
The pin is at
the high level.
The output latch is loaded with "1".
When the pin functions as an
output port, the pin is set to the
high level.
Port 6 data
direction
register
(DDR6)
0
The direction
latch is "0".
The output buffer is turned off to
place the port in input mode.
R/W
000016
H
----0000
B
1
The direction
latch is "1".
The output buffer is turned on to
place the port in output mode.
R/W: Read/write enabled
X : Undefined
- : Empty bit
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 ...
Страница 715: ...696 APPENDIX ...
Страница 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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