h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 303

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

9.3.2
Table 9-4 shows the configuration of port 3 registers.
Table 9-4
Notes: 1. Lower 16 bits of the address.
Port 3 Data Direction Register (P3DDR)
P3DDR is an 8-bit write-dedicated register, which specifies the I/O for each port 3 pin by bit.
Read is disenabled. If a read is carried out, undefined values are read out.
By setting P3DDR to 1, the corresponding port 3 pins become output, and be clearing to 0 they
become input.
P3DDR is initialized to B'**000000 by a reset and in hardware standby mode. The previous state
is maintained in software standby mode. The pin state is determined by specifying SCI, IIC * ,
P3DDR, and P3DR.
Note: * Available when using I
Name
Port 3 data direction register
Port 3 data register
Port 3 register
Port 3 open drain control register
2. Value of bits 5 to 0.
H8S/2630 (the product equipped with the I
Register Configuration
Port 3 Register Configuration
¾
¾
¾
¾
2
C bus interface as an option in the H8S/2638, H8S/2639, and
Abbreviation
P3DDR
P3DR
PORT3
P3ODR
2
C bus interface is the W-mask version).
Rev. 6.00 Feb 22, 2005 page 243 of 1484
R/W
W
R/W
R
R/W
Initial Value *
B'**000000
B'**000000
Undefined
B'**000000
Section 9 I/O Ports
REJ09B0103-0600
2
Address *
H'FE32
H'FF02
H'FFB2
H'FE46
1