h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 186

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 9 I/O Ports
9.6.2
PADR is an 8-bit readable/writable register that stores output data for port A pins.
9.6.3
PORTA is an 8-bit read-only register that shows port A pin states.
Note:
Rev. 3.00 Oct 04, 2005 page 146 of 598
REJ09B0155-0300
Bit
7 to
4
3
2
1
0
Bit
7 to
4
3
2
1
0
Bit Name
PA3DR
PA2DR
PA1DR
PA0DR
Bit Name
PA3
PA2
PA1
PA0
*
Port A Data Register (PADR)
Port A Register (PORTA)
Determined by the states of pins PA3 to PA0.
Initial Value
Undefined
0
0
0
0
Initial Value
Undefined
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
Reserved
These bits are read as an undefined value and
cannot be modified.
Output data for a pin is stored when the pin is
specified as a general purpose I/O port.
Reserved
These bits are read as an undefined value.
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.
Description
Description