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QL2003
3-14
Clock Cells
Symbol
Parameter
Propagation Delays (ns)
Loads per Half Column [10]
1234
8
10
13
tACK
Array Clock Delay
2.2
2.2
2.3
2.4
2.5
2.6
tGCKP
Global Clock Pin Delay
1.2
1.2
1.2
1.2
1.2
1.2
1.2
tGCKB
Global Clock Buffer Delay
1.5
1.6
1.6
1.7
1.8
1.9
2.0
I/O Cells
Symbol
Parameter
Propagation Delays (ns)
Fanout [8]
12
3
4
8
10
tI/O
Input Delay (bidirectional pad)
1.8
2.1
2.4
2.7
3.9
4.6
tISU
Input Register Set-Up Time
4.8
4.8
4.8
4.8
4.8
4.8
tIH
Input Register Hold Time
0.0
0.0
0.0
0.0
0.0
0.0
tlOCLK
Input Register Clock To Q
0.8
1.1
1.4
1.7
2.9
3.6
tlORST
Input Register Reset Delay
0.7
1.0
1.3
1.6
2.8
3.5
tlESU
Input Register clock Enable Set-Up Time
4.1
4.1
4.1
4.1
4.1
4.1
tlEH
Input Register Clock Enable Hold Time
0.0
0.0
0.0
0.0
0.0
0.0
Symbol
Parameter
Propagation Delays (ns)
Output Load Capacitance (pF)
30
50
75
100
150
tOUTLH
Output Delay Low to High
2.6
3.0
3.6
4.1
5.2
tOUTHL
Output Delay High to Low
2.8
3.3
3.9
4.5
5.7
tPZH
Output Delay Tri-state to High
2.1
2.6
3.1
3.7
4.8
tPZL
Output Delay Tri-state to Low
2.6
3.3
4.1
4.9
6.5
tPHZ
Output Delay High to Tri-State [11]
2.9
tPLZ
Output Delay Low to Tri-State [11]
3.3
Notes:
[10]
The array distributed networks consist of 48 half columns and the global distributed networks consist of
52 half columns, each driven by an independent buffer. The number of half columns used does not affect
clock buffer delay. The array clock has up to 10 loads per half column. The global clock has up to 13
loads per half column.
[11]
The following loads are used for tPXZ:
5 pF
1K
Ω
5 pF
1K
Ω
tPHZ
tPLZ
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