Datasheet

Section 8 I/O Ports
Rev.7.00 Feb. 14, 2007 page 226 of 1108
REJ09B0089-0700
Bit 1—Address 21 Enable (A21E): Enables or disables address output 21 (A21). This bit is valid
in modes 4 to 6.
Bit 1
A21E Description
0 P11DR is output when P11DDR = 1
1 A21 is output when P11DDR = 1 (Initial value)
Bit 0—Address 20 Enable (A20E): Enables or disables address output 20 (A20). This bit is valid
in modes 4 to 6.
Bit 0
A20E Description
0 P10DR is output when P10DDR = 1
1 A20 is output when P10DDR = 1 (Initial value)