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XR88C681CN Datasheet(PDF) 7 Page - Exar Corporation

Part # XR88C681CN
Description  CMOS DUAL CHANNEL UART (DUART)
Download  99 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XR88C681CN Datasheet(HTML) 7 Page - Exar Corporation

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XR88C681
>
  
44 PLCC/
LCC
40 DIP,
CDP
28 DIP,
CDIP
Symbol
Type
Description
1=
1<
6
22
#
Master Reset (Active High).
%% (- (% ( ' % (
   -(% %" " #" #" ," ," $ ((((I %
 #;   / %% (- (% ( % %%   .
( " % ,  ,> (  (- % " $ ' % 
% ( ' % (  ('( % ( 5 $ 5*
% 3(- (-
1
16
/

#
Chip Select (Active Low).
 $ % (% (% $ 
 (% C(-D  %+ %    , $ 
  (   >   $   (% CD
<
1/
>
#,
..25
#
Input 2. (General Purpose Input).
(% ( ( ' %
 - $  +'( %  C .(  ! 
''3D ( ..25
<
1>
#,/
5*
#
Input 6 (I-Mode).
0  ,% # ( (% ( (
' %  - $  +'( %  2!   ' (
 '3 +   * 5*
<
1>
#:
#
Interrupt Acknowledge Input (Z-Mode).
'( 9
(% ( (%  , H%  %%   #   E %
(%% $ &    $ ('  B  , %% % (%
(" ( ($(' %    H% (   E % (% 
  % (' $" $    & ! '&' (   # 
 '3 $- &'     (  %$  
, H% #  '3 $- & '(-  ' % + 
#  ; '  -(%  #;   $ %   >
<
1=
#,6
5*
#
Input 5 (I-Mode).
0  ,% # ( (% ( '
%  '+(- $  +'( %  !  ''3 ( +
 %(  +   * 5*
<
1=
#2
?$ 

Interrupt Enable Output (Z-Mode).
'( 8(-
(%  ( (% & C(-D 8  " (  + 
+(-  '$((% ' '% (%  (   
- $ -- $ CD
 #+  #2# #  2 # ( (% CD #+ #2 (%
CD  '% +  #2# (" #2 ( -- C(-D '
 #2# % -- $ C(-D
    % (%% $  #   E %   ,
#7 ( (% -- $ CD #+ #2 (% CD  '% 
  %  E % $  # "  #2 (  (
CD" -  #   (' ( " ( 
, % (3 $  CD '$
<1
1
#,<
5
#
Input 4 (I-Mode).
0  ,% # ( (% ( (
' %  '+(- $  +'( %  !  ''3 (
+   ' (  +  5
<1
1
#2#
?$ 
#
Interrupt Enable Input (Z-Mode).
'( 8(-
#+ (% '( (- ( (%   -(' C(-D"    (% '
 + - (-  %3 $ #   E %%  
,  #+ (% ( (%   -(' CD"    (% ((( $
+ - (- & #   E %%   , 
<<
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=
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Most Positive Power Supply.


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