Datasheet

Section 10 I/O Ports
Rev.7.00 Mar. 18, 2009 page 505 of 1136
REJ09B0109-0700
10.8 Port 9
Port 9 is an 8-bit input-only port. Port 4 has the following register.
• Port 9 register (PORT4)
10.8.1 Port 9 Register (PORT9)
PORT9 is an 8-bit read-only register that shows port 4 pin states.
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
The pin states are always read when a port 9 read is
performed.
0 P90 ⎯* R
Note: * Determined by the states of pins P97 to P90.