Replacing FPGAs with Low Cost ASICs

FPGAs Spartan 3

 

FPGA Conversion Break-Even 

We define a FPGA conversion break-even point as being the number of devices you need so that your savings equals the ASIC NRE investment.  Mathematically, this becomes:

Break-Even Volume =                     NRE Charge                      
                                          (FPGA Unit Price – ASIC Unit Price)    

For example, Tekmos has a 256-pin gate array, with 400K gates, 12 18K block RAMs, and 4 DCMs.  It will support circuits with a top clock rate of about 200 MHz.  Most of the FPGAs we see will fit on this array.  If the design fits on this gate array, then the following charges apply.

NRE: $49,000

 

FPGAs Spartan 3 List

The following table list Spartan 3 FPGAs, and the estimated breakeven volume for each part.  In general, if your volumes exceed the breakeven volume in 6 to 9 months, then an Spartan 3 FPGA conversion into an ASIC makes economic sense for you.

Part Number Breakeven Volume
   
XC3S50-4PQ208C 8500
XC3S50-4PQ208C 8500
XC3S50-4PQ208I 6500
XC3S50-4PQ208I 6500
XC3S50-4PQG208C 11000
XC3S50-4PQG208I 6500
XC3S50-4TQ144C 9600
XC3S50-4TQ144I 7300
XC3S50-4TQ144I 7300
XC3S50-4TQG144C 15800
XC3S50-4TQG144C 15800
XC3S50-4TQG144I 11200
XC3S50-4TQG144I 11200
XC3S50-4VQG100C 17200
XC3S50-4VQG100I 10400
XC3S50-4VQG100I 10400
XC3S50-5PQ208C 6500
XC3S50-5PQ208C 6500
XC3S50-5PQG208C 8800
XC3S50-5TQ144C 7300
XC3S50-5TQ144C 7300
XC3S50-5TQG144C 11200
XC3S50-5VQ100C 8400
XC3S50-5VQ100C 8400
XC3S50-5VQG100C 10400
XC3S200-4FT256C 2700
XC3S200-4FT256C 2700
XC3S200-4FT256I 2600
XC3S200-4FTG256C 4600
XC3S200-4FTG256C 4600
XC3S200-4FTG256I 3200
XC3S200-4FTG256I 3200
XC3S200-4PQ208C 5600
XC3S200-4PQ208C 5600
XC3S200-4PQ208I 4600
XC3S200-4PQG208C 6600
XC3S200-4PQG208I 4600
XC3S200-4PQG208I 4600
XC3S200-4TQ144C 8600
XC3S200-4TQ144C 8600
XC3S200-4TQ144I 6600
XC3S200-4TQ144I 6600
XC3S200-4TQG144C 9700
XC3S200-4TQG144I 7900
XC3S200-4VQ100I 6700
XC3S200-4VQG100C 6500
XC3S200-4VQG100I 7900
XC3S200-4VQG100I 7900
XC3S200-5FT256C 3200
XC3S200-5FTG256C 3200
XC3S200-5FTG256C 3200
XC3S200-5PQ208C 4600
XC3S200-5PQG208C 4600
XC3S200-5TQ144C 5100
XC3S200-5TQG144C 6600
XC3S200-5VQ100C 5300
XC3S200-5VQG100C 5300
XC3S400-4FT256C 2900
XC3S400-4FT256I 2400
XC3S400-4FTG256C 4200
XC3S400-4FTG256I 3400
XC3S400-4PQ208I 2600
XC3S400-4PQ208I 2600
XC3S400-4PQG208C 4700
XC3S400-4PQG208I 3200
XC3S400-4PQG208I 3200
XC3S400-4TQ144I 3000
XC3S400-4TQG144C 5200
XC3S400-4TQG144I 3800
XC3S400-4TQG144I 3800
XC3S400-5FT256C 2400
XC3S400-5FT256C 2400
XC3S400-5FTG256C 3000
XC3S400-5PQ208C 2600
XC3S400-5PQ208C 2600
XC3S400-5PQG208C 3200
XC3S400-5TQ144C 3000
XC3S400-5TQG144C 3800
XC3S400-5TQG144C 3800
XC3S1000-4FT256I 1500
XC3S1000-4FTG256C 1400
XC3S1000-4FTG256C 1400
XC3S1000-4FTG256I 1500
XC3S1000-5FT256C 1500
XC3S1000-5FTG256C 1500

  

If your Spartan 3 FPGA is not listed here, or if you want more information, Give us a call at 512-342-9871, e-mail us at This email address is being protected from spambots. You need JavaScript enabled to view it., or just push the Request a Quote button. We will help you cut your manufacturing costs.

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