40MX and 42MX FPGA Families
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R e v i sio n 1 1
Table 1-33 A42MX09 Timing Characteristics (Nominal 3.3 V Operation)
(Worst-Case Commercial Conditions, VCCA = 3.0 V, TJ = 70°C)
–3 Speed
–2 Speed
–1 Speed
Std Speed
–F Speed
Units
Parameter / Description
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
Logic Module Propagation Delays1
tPD1
Single Module
1.6
1.8
2.1
2.5
3.5
ns
tCO
Sequential Clock-to-Q
1.8
2.0
2.3
2.7
3.8
ns
tGO
Latch G-to-Q
1.7
1.9
2.1
2.5
3.5
ns
tRS
Flip-Flop (Latch) Reset-to-Q
2.0
2.2
2.5
2.9
4.1
ns
Logic Module Predicted Routing Delays2
tRD1
FO = 1 Routing Delay
1.0
1.1
1.2
1.4
2.0
ns
tRD2
FO = 2 Routing Delay
1.3
1.4
1.6
1.9
2.7
ns
tRD3
FO = 3 Routing Delay
1.6
1.8
2.0
2.4
3.3
ns
tRD4
FO = 4 Routing Delay
1.9
2.1
2.4
2.9
4.0
ns
tRD8
FO = 8 Routing Delay
3.2
3.6
4.1
4.8
6.7
ns
Logic Module Sequential Timing 3, 4
tSUD
Flip-Flop (Latch) Data Input Set-Up 0.5
0.5
0.6
0.7
0.9
ns
tHD
Flip-Flop (Latch) Data Input Hold
0.0
ns
tSUENA
Flip-Flop (Latch) Enable Set-Up
0.6
0.7
0.8
1.2
ns
tHENA
Flip-Flop (Latch) Enable Hold
0.0
ns
tWCLKA
Flip-Flop (Latch)
Clock Active Pulse Width
4.7
5.3
6.0
7.0
9.8
ns
tWASYN
Flip-Flop (Latch)
Asynchronous Pulse Width
6.2
6.9
7.8
9.2
12.9
ns
tA
Flip-Flop Clock Input Period
5.0
5.6
6.2
7.1
9.9
ns
tINH
Input Buffer Latch Hold
0.0
ns
tINSU
Input Buffer Latch Set-Up
0.3
0.4
0.6
ns
tOUTH
Output Buffer Latch Hold
0.0
ns
tOUTSU
Output Buffer Latch Set-Up
0.3
0.4
0.6
ns
fMAX
Flip-Flop (Latch) Clock Frequency
161
146
135
117
70
MHz
Notes:
1. For dual-module macros, use tPD1 + tRD1 + tPDn, tCO + tRD1 + tPDn, or tPD1 + tRD1 + tSUD, whichever is appropriate.
2. Routing delays are for typical designs across worst-case operating conditions. These parameters should be used for
estimating device performance. Post-route timing analysis or simulation is required to determine actual performance.
3. Data applies to macros based on the S-module. Timing parameters for sequential macros constructed from C-modules
can be obtained from the Timer utility.
4. Set-up and hold timing parameters for the input buffer latch are defined with respect to the PAD and the D input. External
setup/hold timing parameters must account for delay from an external PAD signal to the G inputs. Delay from an external
PAD signal to the G input subtracts (adds) to the internal setup (hold) time.
5. Delays based on 35 pF loading.