Datasheet

Section 10 I/O Ports
Page 600 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
10.8 Port 9
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 Port 9 Register (PORT9)
PORT9 is an 8-bit read-only register that shows the pin states of port 9. PORT9 cannot be
modified.
Bit Bit Name Initial Value R/W Description
7 P97 ⎯* R
6 P96 ⎯* R
5 P95 ⎯* R
4 P99 ⎯* R
3 P93 ⎯* R
2 P92 ⎯* R
1 P91 ⎯* R
0 P90 ⎯* R
The pin states are always read from this register.
Bits 7, 6, and 3 to0 are reserved in the H8S/2454
Group.
Note: * Determined by the states of pins P97 to P90.