Datasheet

Section 10 I/O Ports
Rev. 6.00 Mar. 18, 2010 Page 347 of 982
REJ09B0054-0600
10.10.1 Port E Data Direction Register (PEDDR)
PEDDR specifies input or output of the port E pins using the individual bits. PEDDR cannot be
read; if it is, an undefined value will be read. This register is a write-only register, and cannot be
written by bit manipulation instruction. For details, see section 2.9.4, Access Methods for
Registers with Write-Only Bits.
Bit Bit Name Initial Value R/W Description
7 PE7DDR 0 W
6 PE6DDR 0 W
5 PE5DDR 0 W
4 PE4DDR 0 W
3 PE3DDR 0 W
2 PE2DDR 0 W
1 PE1DDR 0 W
When a pin is specified as a general purpose I/O port,
setting this bit to 1 makes the corresponding port E
pin an output port. Clearing this bit to 0 makes the pin
an input port.
0 PE0DDR 0 W
10.10.2 Port E Data Register (PEDR)
PEDR stores output data for port E pins.
PEDR stores output data for port E pins.
Bit Bit Name Initial Value R/W Description
7 PE7DR 0 R/W
6 PE6DR 0 R/W
5 PE5DR 0 R/W
4 PE4DR 0 R/W
3 PE3DR 0 R/W
2 PE2DR 0 R/W
1 PE1DR 0 R/W
Output data for a pin is stored when the pin is
specified as a general purpose output port.
0 PE0DR 0 R/W