h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 288
h8s-2635
Manufacturer Part Number
h8s-2635
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2635.pdf
(1547 pages)
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Section 9 I/O Ports
9.2.2
Table 9-2 shows the port 1 register configuration.
Table 9-2
Note: * Lower 16 bits of the address.
Port 1 Data Direction Register (P1DDR)
P1DDR is an 8-bit write-only register, the individual bits of which specify input or output for the
pins of port 1. P1DDR cannot be read; if it is, an undefined value will be read.
Setting a P1DDR bit to 1 makes the corresponding port 1 pin an output pin, while clearing the bit
to 0 makes the pin an input pin.
P1DDR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state in
software standby mode.
Port 1 Data Register (P1DR)
P1DR is an 8-bit readable/writable register that stores output data for the port 1 pins (P17 to P10).
P1DR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state in
software standby mode.
Rev. 6.00 Feb 22, 2005 page 228 of 1484
REJ09B0103-0600
Name
Port 1 data direction register
Port 1 data register
Port 1 register
Bit
Initial value :
R/W
Bit
Initial value :
R/W
Register Configuration
Port 1 Registers
:
:
:
:
P17DDR P16DDR P15DDR P14DDR P13DDR P12DDR P11DDR P10DDR
P17DR
R/W
W
7
0
7
0
P16DR
R/W
W
6
0
6
0
Abbreviation
P1DDR
P1DR
PORT1
P15DR
R/W
W
5
0
5
0
P14DR
R/W
W
4
0
4
0
R/W
W
R/W
R
P13DR
R/W
W
3
0
3
0
Initial Value
H'00
H'00
Undefined
P12DR
R/W
W
2
0
2
0
P11DR
R/W
W
1
0
1
0
Address *
H'FE30
H'FF00
H'FFB0
P10DR
R/W
W
0
0
0
0
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