Datasheet

Section 10 I/O Ports
Rev. 6.00 Mar. 18, 2010 Page 327 of 982
REJ09B0054-0600
10.5 Port 9
Port 9 is a 2-bit input-only port and has the following register.
• Port 9 register (PORT9)
10.5.1 Port 9 Register (PORT9)
PORT9 shows port 9 pin states. This register cannot be modified.
Bit Bit Name Initial Value R/W Description
7 P97
⎯
*
R
6 P96 ⎯
*
R
The pin states are always read when these bits are
read.
5 to 0 ⎯ ⎯ R Reserved
These bits are always read as undefined value.
Note: * Determined by the states of pins P97 and P96.
10.5.2 Pin Functions
Port 9 pins also function as D/A converter analog output pins (DA1 and DA0)*.
Note: * Not available in the H8S/2227 Group.