参数资料
型号: XR68C681CP
厂商: Exar Corporation
文件页数: 37/75页
文件大小: 0K
描述: IC UART CMOS DUAL 40PDIP
产品变化通告: Leaded UART, V&I Obsolescence 11/Apr/2011
标准包装: 9
特点: *
通道数: 2,DUART
FIFO's: 1 字节,3 字节
电源电压: 5V
安装类型: 通孔
封装/外壳: 40-DIP(0.600",15.24mm)
供应商设备封装: 40-PDIP
包装: 管件
XR68C681
=
Output Port
Alternate Function(s)
,
RTSA:
C%$ + ' 84 (% (% '( : + +'
(
,
RTSB:
C%$ + ' * 84 (% (% '( : + +'
(
,
TXCA_16X Output:
/5 %( '3 4
TXCA_1X Output:
5 %( '3
RXCA_1X: Output:
5 '( '3
,1
TXCB_1X Output:
* 5 %( '3 4
RXCB_1X Output:
* 5 '( '3
C/T_1_RDY:
.( $& + . P Note: This output is an Open-Drain output
when used as the Counter/Timer Ready Output.
,=
RXRDY/FFULL_A Output:
'( $&. # #$(' 84 (% (%
( + 5E. ::D +'(
,6
RXRDY/FFULL_B Output:
* '( $&. # #$(' 84 (% (%
( + 5E. ::D* +'(
,/
TXRDY_A Output:
%( $& #$(' (% (% ( +
5ED +'(
,@
TXRDY_B Output:
* %( $& #$(' (% (% ( +
5ED* +'(
Table 15. Listing of the Alternate Functions for the Output Port
& + '(% + (% (% %'$ & ((- ( $ ,
( + + (% -(% +%
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
OP7
OP6
OP5
OP4
OP3
OP2
J ,M@N
J 5E*
J ,M/N
J 5E
J ,M6N
J 5E.
::*
J ,M=N
J 5E.
::
J ,M1N
J . P
J 5*5
J 5* 5
J ,MN
J 5 /5
J 5 5
Table 16. Output Port Configuration Register - OPCR
Note:
OPCR only addresses the alternate functions for output port pins, OP7 - OP2. OP0 and OP1 assume their RTS roles if either
MR1n[7] = 1 or MR2n[5] = 1. Setting those mode register bits enables the RTS function. Otherwise, these two ports will only be
general purpose output ports.
G. SERIAL CHANNELS A and B
2' %( ' + '(%%
+$! %&'% '( $ %(
'% ' ($$& %' ( (-
+C'& + *0" ." ! ''3 %
% (- $ *%($% $ (
(' '( $ %( + ' '
($$&" ' '+(-$
( (% (- $%" (' %+ +
' $ $(-%('%" % % ( 3
$ %$ + ($ ('(%
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