Hitachi H8/3035 Series Hardware Manual page 117

Bit 5—Address 21 Enable (A
Writing 0 in this bit enables A
be modified and PA has its ordinary input/output functions.
6
Bit 5
A E Description
21
0 PA6 is the A21 address output pin
1 PA6 is the PA6/TP6/TIOCA1 input/output pin
Bits 4 to 0—Reserved
E): Enables PA to be used as the A
21 6
address output from PA
21
address output pin.
21
. In modes other than 2 this bit cannot
6
(Initial value)
103