Datasheet

Section 8 I/O Ports
Rev.7.00 Feb. 14, 2007 page 236 of 1108
REJ09B0089-0700
Port 2 Data Direction Register (P2DDR)
Bit : 7 6 5 4 3 2 1 0
P27DDR P26DDR P25DDR P24DDR P23DDR P22DDR P21DDR P20DDR
Initial value : 0 0 0 0 0 0 0 0
R/W : W W W W W W W W
P2DDR is an 8-bit write-only register, the individual bits of which specify input or output for the
pins of port 2. P2DDR cannot be read; if it is, an undefined value will be read.
Setting P2DDR bits to 1 makes the corresponding port 2 pins output pins, while clearing the bits
to 0 makes the pins input pins.
P2DDR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state in
software standby mode.
Port 2 Data Register (P2DR)
Bit : 7 6 5 4 3 2 1 0
P27DR P26DR P25DR P24DR P23DR P22DR P21DR P20DR
Initial value : 0 0 0 0 0 0 0 0
R/W : R/W R/W R/W R/W R/W R/W R/W R/W
P2DR is an 8-bit readable/writable register that stores output data for the port 2 pins (P27 to P20).
P2DR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state in
software standby mode.