r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 606

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 I/O Ports
10.8
Port 9 is an 8-bit input-only port that also has other functions. Port 9 has the following register.
• Port 9 register (PORT9)
10.8.1
PORT9 is an 8-bit read-only register that shows the pin states of port 9. PORT9 cannot be
modified.
Note:
Rev. 1.00 Sep. 19, 2008 Page 576 of 1342
REJ09B0467-0100
Bit
7
6
5
4
3
2
1
0
Bit Name
P97
P96
P95
P99
P93
P92
P91
P90
*
Port 9
Port 9 Register (PORT9)
Determined by the states of pins P97 to P90.
Initial Value
*
*
*
*
*
*
*
*
R/W
R
R
R
R
R
R
R
R
Description
The pin states are always read from this register.
Bits 7, 6, and 3 to0 are reserved in the H8S/2454
Group.