
XR82C684
4
Port 2 (P2.0 - P2.7)
+ +(% 0 (% % '
*'( % , % $-# % (, & *
%% % * %(,% 3( " ' & *
9. &% * " & 0 9
Port 3:
+ 4 (% % (% B $ ((
*'( (, % , % $-# % (%
( *'( % 5' * % (%
%# % (% ( Table 5# 37
Bit
Name
Alternate Function
+4
8!
'( ! * ( +
+4
8!
%( ! * ( +
+4
$:
5" $
+44
$:
5" $
+4@
(- 5" $
+49
(- 5" $
+4.
E
5" ! & E(
+4B
!
5" ! &
Table 5. Alternate Functions of Port 3 Pins
09 % % % (( (% 3('
(*'(, 80.0@
(% % (% 7
ALE - Address Latch Enable
$* + (% % ( (% % %
3 & * %% % <5 (% %(,
'% %% ( " ,(% (,
*(% * * & '&' ' (% (% # +
(% ( * ( (,
%' * * & '&'# 3 %*
6% '
-INT0 (P3.2) and -INT1 (P3.3)
$: $: " ( I% (%
09 5' * % ( (% % /('
(1 '%%(, $ (% '%# /('1
% (* * % (% %%#
, ' 3( ('& ' %'(*('
*(" '( ( ' &
(% '( (%
( & '('( %(, * 09 $
' ', Table 6 %% '( (
' & , ' 3( ' # (*
( * % (% %%
Interrupt
Location
$:
4;
$:
4;
Table 6. Interrupt Service Routine Locations (in
Code Memory) for -INT0 and -INT1
* # (* % (% %(, ( * % (% %
( I% (# % % (%
( ( %(' (
' (( ' (%'( ( %('
( (% ' * % %% '( %
$* 09 (% I( (*' "
' % ( & %' * %(J% ,
9. &%# + % + % %
% %% (% + 3( *'( %
(" %%- % !(, *(% * *
& '&'# + 3( % 3 %%
& !(, %' * * & '&' +
3( % (('( % + 3(
% % %% & <5 % *
B@<4B4 % ' (' ' %
(" %% ! % %(,%
Figure 9
(% %'(' (%(, 3 80.0@