40MX and 42MX FPGA Families
Re vi s i on 11
1 - 75
tRENSU
Read Enable Set-Up
0.6
0.7
0.8
0.9
1.3
ns
tRENH
Read Enable Hold
3.4
3.8
4.3
5.0
7.0
ns
tWENSU
Write Enable Set-Up
2.7
3.0
3.4
4.0
5.6
ns
tWENH
Write Enable Hold
0.0
ns
tBENS
Block Enable Set-Up
2.8
3.1
3.5
4.1
5.7
ns
tBENH
Block Enable Hold
0.0
ns
Asynchronous SRAM Operations
tRPD
Asynchronous Access Time
8.1
9.0
10.2
12.0
16.8
ns
tRDADV
Read Address Valid
8.8
9.8
11.1
13.0
18.2
ns
tADSU
Address/Data Set-Up Time
1.6
1.8
2.0
2.4
3.4
ns
tADH
Address/Data Hold Time
0.0
ns
tRENSUA Read Enable Set-Up to Address
Valid
0.6
0.7
0.8
0.9
1.3
ns
tRENHA
Read Enable Hold
3.4
3.8
4.3
5.0
7.0
ns
tWENSU
Write Enable Set-Up
2.7
3.0
3.4
4.0
5.6
ns
tWENH
Write Enable Hold
0.0
ns
tDOH
Data Out Hold Time
1.2
1.3
1.5
1.8
2.5
ns
Input Module Propagation Delays
tINPY
Input Data Pad-to-Y
1.0
1.1
1.3
1.5
2.1
ns
tINGO
Input Latch Gate-to-Output
1.4
1.6
1.8
2.1
2.9
ns
tINH
Input Latch Hold
0.0
ns
tINSU
Input Latch Set-Up
0.5
0.6
0.7
1.0
ns
tILA
Latch Active Pulse Width
4.7
5.2
5.9
6.9
9.7
ns
Input Module Predicted Routing Delays2
tIRD1
FO = 1 Routing Delay
2.0
2.2
2.5
2.9
4.1
ns
tIRD2
FO = 2 Routing Delay
2.3
2.6
2.9
3.4
4.8
ns
tIRD3
FO = 3 Routing Delay
2.6
2.9
3.3
3.9
5.5
ns
tIRD4
FO = 4 Routing Delay
3.0
3.3
3.8
4.4
6.2
ns
tIRD8
FO = 8 Routing Delay
4.3
4.8
5.5
6.4
9.0
ns
Table 1-38 A42MX36 Timing Characteristics (Nominal 5.0 V Operation)
(Worst-Case Commercial Conditions, VCCA = 4.75 V, TJ = 70°C)
–3 Speed
–2 Speed
–1 Speed
Std Speed
–F Speed
Parameter / Description
Min. Max. Min. Max. Min. Max. Min. Max. Min.
Max. Units
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.