参数资料
型号: XR68C681CP
厂商: Exar Corporation
文件页数: 31/75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
1@
Input
Port
Alternate Function(s)
Approach to Program Alternate Functions
#,
4 $ ( + '
84 (% ( (% '( :" + +'(
#, ' -$ +'( % (
& %(- M=N J $($ $(%'%%(
(% +'(" % % Section G.3
#,
*4 $ ( + ' *
84 (% ( (% '( : + +'(
#, ' -$ +'( % * (
& %(- *M=N J $($ $(%'%%(
(% +'(" % % Section G.3
#,
D254 .( 2! '3 #
5*4 2! '3 ( + '( ' *
#, ' -$ +'( % !
''3 ( + .( & %(- M/4=N J
M" " N $($ $(%'%%( ( ++'
+ (% '( % % Section D.2
#, ' % -$ +'( % !
''3 ( + '( + ' * & %(-
*M@4=N J M" " " N + /5 '3" *M@4=N
J M" " " N + 5 '3
#,1
54 2! '3 ( + %( '
#,1 ' -$ +'( % !
''3 ( + %( + ' & %(-
M14N J M" " " N + /5 '3" M14N
J M" " " N + 5 '3
#,=
54 2! '3 ( + '( '
#,= ' -$ +'( % !
''3 ( + '( + ' & %(-
M@4=N J M" " " N + /5 '3" M@4=N
J M" " " N + 5 '3
#,6
5*4 2! '3 ( + %( ' *
#,6 ' -$ +'( % !
''3 ( + %( + ' * & %(-
*M14N J M" " " N + /5 '3" *M14N
J M" " " N + 5 '3
Table 12. Listing of Alternate Function for the Input Port Pins
E.2 Input Port Configuration Registers (IPCR)
# , +(-( -(% (% H$&I
-(% %% +(- +'(%4
% 3 (' + + ( (% 4
#, #,1" % '-$ -(' %" %(' % $
+ (% -(%
% 3 ' -(' % + %
+ ( (%
%C&" # , +(-( -(% (%
+'(& $(($ ( %'(%4
*(% @ =4 H- ( :-(' I #$(+('( (%
*(% 1 4 ' % + # ,(% #, #,1
( + + # , +(-( -(% (%
%$ ( Table 13.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
#,1
#,
#,1
#,
J8
JE%
J8
JE%
J8
JE%
J8
JE%
J :
J 9(-
J :
J 9(-
J :
J 9(-
J :
J 9(-
Table 13. Bit Format of the Input Port Configuration Register (IPCR)
(+ $(%'%%( + ' (+($" (( (% -(% +%
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