Datasheet

Table Of Contents
Section 9 I/O Ports
REJ09B0140-0900 Rev. 9.00 Page 249 of 846
Sep 16, 2010
H8S/2215 Group
9.6.2 Port A Data Register (PADR)
PADR stores output data for the port A pins.
Bit Bit Name Initial Value R/W Description
7 to
4
— Undefined Reserved
These bits are undefined and cannot be modified.
3 PA3DR 0 R/W
2 PA2DR 0 R/W
1 PA1DR 0 R/W
An output data for a pin is stored when the pin function is
specified to a general purpose output port.
0 PA0DR 0 R/W
9.6.3 Port A Register (PORTA)
PORTA shows port A pin states.
Bit Bit Name Initial Value R/W Description
7 to
4
— Undefined Reserved
These bits are undefined and cannot be modified.
3 PA3
*
R
2 PA2
*
R
1 PA1
*
R
If a port A read is performed while PADDR bits are set to
1, the PADR values are read. If a port A read is performed
while PADDR bits are cleared to 0, the pin states are
read.
0 PA0
*
R
Note: * Determined by the states of pins PA3 to PA0.