h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 176

• 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
9.2
Port 3 is an 8-bit I/O port and has the following registers.
9.2.1
P3DDR is an 8-bit write-only register, the individual bits of which specify input or output for the
pins of port 3.
Rev. 3.00 Oct 04, 2005 page 136 of 598
REJ09B0155-0300
Bit
7
6
5
4
3
2
1
0
Port 3 data direction register (P3DDR)
Port 3 data register (P3DR)
Port 3 register (PORT3)
Port 3 open-drain control register (P3ODR)
Bit Name
P37DDR
P36DDR
P35DDR
P34DDR
P33DDR
P32DDR
P31DDR
P30DDR
Port 3
Port 3 Data Direction Register (P3DDR)
Initial Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
When a pin is specified as a general purpose I/O
port, setting these bits to 1 makes the corresponding
port 3 pin an output pin. Clearing these bits to 0
makes the pin an input pin.
Description