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EP910 데이터시트(PDF) 39 Page - Altera Corporation |
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EP910 데이터시트(HTML) 39 Page - Altera Corporation |
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39 / 42 page ![]() Altera Corporation 783 Classic EPLD Family Data Sheet Tables 28 through 31 show the timing parameters for EP1810-20, EP1810-25, EP1810-35, and EP1810-45 devices. Table 28. EP1810-20 & EP1810-25 External Timing Parameters Note (1) Symbol Parameter Conditions EP1810-20 EP1810-25 Non-Turbo Adder Unit Min Max Min Max (2) tPD1 Input to non-registered output C1 = 35 pF 20.0 25.0 25.0 ns tPD2 I/O input to non-registered output C1 = 35 pF 22.0 28.0 25.0 ns tSU Global clock setup time 13.0 17.0 25.0 ns tH Global clock hold time 0.0 0.0 0.0 ns tCH Global clock high time 8.0 10.0 0.0 ns tCL Global clock low time 8.0 10.0 0.0 ns tCO1 Global clock to output delay C1 = 35 pF 15.0 18.0 0.0 ns tCNT Minimum global clock period (3) 20.0 25.0 0.0 ns fCNT Maximum internal frequency (3) 50.0 40.0 0.0 MHz tASU Array clock setup time 8.0 10.0 25.0 ns tAH Array clock hold time 8.0 10.0 0.0 ns tACO1 Array clock to output delay C1 = 35 pF 20.0 25.0 25.0 ns tODH Output data hold time after clock C1 = 35 pF (4) 1.0 1.0 0.0 ns tACNT Array clock maximum clock period (3) 20.0 25.0 0.0 ns fACNT Maximum internal array clock frequency (3) 50.0 40.0 0.0 ns fMAX Maximum clock frequency (5) 62.5 50.0 0.0 MHz Table 29. EP1810-20 and EP1810-25 Internal Timing Parameters Symbol Parameter Conditions EP1810-20 EP1810-25 Non-Turbo Adder Unit Min Max Min Max (2) tIN Input pad and buffer delay 5.0 7.0 0.0 ns tIO I/O input pad and buffer delay 2.0 3.0 0.0 ns tLAD Logic array delay 9.0 12.0 25.0 ns tOD Output buffer and pad delay C1 = 35 pF 6.0 6.0 0.0 ns tZX Output buffer enable delay C1 = 35 pF 6.0 6.0 0.0 ns tXZ Output buffer disable delay C1 = 5 pF (6) 6.0 6.0 0.0 ns tSU Register setup time 8.0 10.0 0.0 ns tH Register hold time 5.0 10.0 0.0 ns tIC Array clock delay 9.0 12.0 25.0 ns tICS Global clock delay 4.0 5.0 0.0 ns tFD Feedback delay 3.0 3.0 –25.0 ns tCLR Register clear time 9.0 12.0 25.0 ns |
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