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XR88C681P Datasheet(PDF) 9 Page - Exar Corporation

Part # XR88C681P
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

XR88C681P Datasheet(HTML) 9 Page - Exar Corporation

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XR88C681

  
AC ELECTRICAL CHARACTERISTICS 1, 2, 3
Test Conditions:
 J  >" ; J6;  6K  %%  (% % '(+( $
Symbol
Parameter
Min.
Typ.
Max.
Unit
Conditions
Reset Timing (See Figure 51)
2
22 ,% B($

XR88C681 Read and Write Cycle Timing (Figure 52)4

1   (  " B
9

%
8
1 8$ ( + " B
9

%

   (  " B 9

%
8
 8$ ( + " B
8(-

%
B
" B ,% B($
6
%

 ;($ +  9
/
>6
%

 *% (- +  8(-


%

   (  B 8(-

%
8
 8$ ( + B 8(-
6
%
B
8(- ( *   $%
$. B( %6" /

%
Z-Mode Interrupt Cycle Timing (Figure 53)
#
#2  & ( + #2#

%
#
#:   (   9>
%
#8
#: 8$ ( +  8(-

%
2#
#2#   (   9
6
%
2
#2  & ( + #7 9

%
Port Timing (Figure 54)4
,
, #   ( 
. 9

%
,8
, # 8$ ( +
. 8(-

%
,
,  ;($ + B.
8(-
<
%
Interrupt Output Timing (Figure 55)
#
#7  ,1  ,>  % $
% # % 8(- +4   +
# % % *(% ( # 
#,   + #  %3 (
#
1
1
%
%
Clock Timing (Figure 56)
9:
5.9: 2!  8(-  9
(

%
9:
5.9: &%  2! 
 E '&
>1>
8I


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