timer.tan.summary

能够实现小时（24进制）、分钟和秒钟（60进制）的计数功能 具有复位功能 功能扩展：具有整点报时提示、定时闹钟等功能

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Timing Analyzer Summary
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Type           : Worst-case tsu
Slack          : N/A
Required Time  : None
Actual Time    : 5.859 ns
From           : iRst
To             : DTIMER:U1|\F:fre[7]
From Clock     : --
To Clock       : iclk
Failed Paths   : 0

Type           : Worst-case tco
Slack          : N/A
Required Time  : None
Actual Time    : 13.798 ns
From           : DLED:U2|oLMin[7]
To             : oLMin[7]
From Clock     : iclk
To Clock       : --
Failed Paths   : 0

Type           : Worst-case th
Slack          : N/A
Required Time  : None
Actual Time    : -4.934 ns
From           : iRst
To             : DTIMER:U1|\F:fre[20]
From Clock     : --
To Clock       : iclk
Failed Paths   : 0

Type           : Clock Setup: 'iclk'
Slack          : N/A
Required Time  : None
Actual Time    : 194.70 MHz ( period = 5.136 ns )
From           : DTIMER:U1|\F:fre[3]
To             : DTIMER:U1|\F:hou[0]
From Clock     : iclk
To Clock       : iclk
Failed Paths   : 0

Type           : Clock Hold: 'iclk'
Slack          : Not operational: Clock Skew > Data Delay
Required Time  : None
Actual Time    : N/A
From           : DTIMER:U1|\F:min[0]
To             : DLED:U2|oLMin[2]
From Clock     : iclk
To Clock       : iclk
Failed Paths   : 186

Type           : Total number of failed paths
Slack          : 
Required Time  : 
Actual Time    : 
From           : 
To             : 
From Clock     : 
To Clock       : 
Failed Paths   : 186

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