XR82C684CJ-F Datasheet, PDF (12/107 Pages) Exar Corporation – CMOS Quad Channel UART(QUART)

XR82C684
AC ELECTRICAL CHARACTERISTICS ^{1, 2, 3}
Test Conditions: _ L 9

# >

L 9>  9M  %%  3(% %'(*(
Symbol
Parameter
Min. Typ. Max. Unit Conditions
Reset Timing (See Figure 56)
5 55 +% E(

•%
XR82C684 Read and Write Cycle Timing - 88 Mode (Figure 57) ⁷
_
@  (  !# E

%
<3
_;
@ ;  ( *  !# E

%
<3

_

  (  !# E < 3

%

_;

 ;  ( *  !# E

%
;(,
_E
!# E +% E(
9
%
_!!
! >( *  ! < 3
.
B9
%
_!
! )%  ( , *  ! ;(,


%
_!
!  (  E ;(,

%
_!;
! ;  ( *  E ;(,
9
%
_E!
;(, ( 3 %  -

%
 E(% ^{0# }
Z-Mode Interrupt Cycle Timing (Figure 58)
_!$
$5 !& ( *  $5$

%
_$
$
=  (  ! < 3^
:  
%
_$;
$
= ;  ( *  ! ;(,

%
_5$
$5$  (  ! < 3
9
%
_5!
$5 !& ( *  $: < 3

%
XR82C684 Read, Write and Interrupt Cycle Timing -68 Mode (Figure 59, Figure 60 and Figure 61)
_
9  (  
 < 3

%
_;
9 ;  ( *  
 ;(,

%
_E
-E  (  
 < 3

%
_E;
-E  ( *  
 ;(,

%

_E

 ;(, +% E( ^{# }

%

_!

  $
= ;(, *  !
= 
%
<3
_!!
! >( *  
  $
=
<3
B9
%
_!
! )%  ( , *  
 

$
= ;(,

%
_!
!  (  
 < 3

%
_!;
! ;  ( *  
 < 3
9
%
_!<
!
= < 3 *   !

%
>(