XR88C681CP Datasheet, PDF (32/99 Pages) Exar Corporation – CMOS DUAL CHANNEL UART (DUART)

XR88C681
Input Name
 >6
 /6
 66
#7
Trigger
,%(( 2$- (--$
8(- 9  ( $
8(- 9  ( $
8(- 9  ( $
Priority

1
<
6
Type
('
('
('
2!  ;'$
Acknowledge
Signal?
7 
7 
7 
#7 J C9D
Address (Hex)
1

1<


 Table 10
Table 11. 8085 CPU Maskable Interrupt Request Inputs and their Features
Direct Interrupts
  ==6
, ( %  >6"  /6"  $  66 
C(' # D E% ( % '(+('&" (+  & +
 % ( %  %%$"     - '  +
 
, (%"  '( +   '  ( %'( "
('& $$ (  & '(
$( $ &   '('(& ( (   ==6 $('"
 $  ' % - '     '(   %
C('D ( % $  ($   (  $('
(  & % + C#  '3 $-D 8 '"
''$( -  Table 11" (+    >6 (   %%$"
   C1
_/D $  $$ (    -
'  +  
,"  $ - '  $  ' 
  '( ( &   % (% % %(  ( %
    '' (  %(' (  -( %   
'( ( &
  ==6
, ++% (  (((I( " ( (   %
+ %3 # %  (% ((& (% +'$ Table 11
# % $  $    % ((& %  & & 
C $( -D (  E%  '  (' ( 
% C+   ED  $ (% ( - %('$ &  
,"  (%
(((I( %'    - (%    ('
( 
 %E &" ( (% %%(     66
(  E% '$ C( D   (  %('
(  +   (-  ((&  >6 (  E%
 +"   % % -$ -( %  (%    
( (%.  +(
Table 11 % ( $('%     ==6
, ( %
C! D '$ ( %      $
' $%    %$ ( !  '$ ( 
'%%( -  ($ ('    % $ +   ==

, % Section C.6.1.2
Figure 10  $ Figure 11 %   $(++ 
' %   '  %$  ( +'   5==
/=
     ==6
,
Figure 10 % %  %' ('       (
E%  C('D  /6 #     ==6
, #
 (% '%"   #  (' (  +    
% -(  1<_/ ( %&% &  (% (%  &
%( ( +' ' (E" '%   (%  C# 
'3 $-D %(-     $ ( +'
 
1