XR88C681CN/40(1999) Просмотр технического описания (PDF) - Exar Corporation

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Компоненты Описание

Список матч

XR88C681CN/40
(Rev.:1999)

CMOS Dual Channel UART (DUART)

Exar Corporation 

XR88C681

44 PLCC/

LCC

1

40 DIP,

CDP

>

28 DIP,

CDIP

1

=

1





11

1



1<

16

1



1/

1

1

1>

11

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Symbol

,<

5G.

99.

,

5
./

5
5

5
.5

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5

7

5

5.
9:

5

Type Description

 Output 4 (General Purpose Output).  (%  (

' %  -$  +'( %   $("

'(" C'( $&D  C #  D ($('

 +
  5G.. 99.

 Output 2 (General Purpose Output).  (%  (

' %  -$  +'( % & +   +

(-4  
 %( /5  5 ''3

 5
./5  5
.5"   


'( 5 ''3  5
.5

 Output 0 (General Purpose Output).  (%  (

' %  -$  +'( %   '("

E%$  +
 

 Transmitter Serial Data Output (Channel A).  

% %(-(+(' ( +   ' ' (% %($ +(%

 (%  (% $ (   3(-  (-  %    

%( (% ($" $(%$"  (- (   9'

9,*
: $ #+  ! %( ''3 (%

%'(+($" 5
"   $ (% % (+$  +   

%(  (+ -(%    +(-   $- +

  ''3

No Connect.

# Receive Serial Data Input (Channel A).   %

%(-(+(' ( +   ' ' (% '($ +(% #+ 

! '( ''3" 5
" (% %'(+($"   $ (%

%$    (%(- $- +   ''3

# Crystal Output of External Clock Input.  (% ( (%

  ''( +  %($ +   '&% $  ''(

  -$     ( %'( (% %$ #+  

%'( (%  %$"  ! ''3 %(- % 

%($   (% (

# $ +   5==
/= $('  +'( &"

  % % %&  %(- ( +E'(% 

 8I $ <8I  (% E( ' 

 & (   '&% %'(  &   !

9'( ''3 %(-

 Crystal Input.
'( +    %($ +   '&%

 %( + 5.
9: #+   %'( (% %$" 

''( % %  ''$ +  (% ( 

-$  (% ( %  +  (+  ! ''3

(% %($  5.
9:

 

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