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A1425A-1CQ256C Datasheet(PDF) 36 Page - Actel Corporation |
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A1425A-1CQ256C Datasheet(HTML) 36 Page - Actel Corporation |
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36 / 98 page  36 A1 42 5A T i m i n g C har a c t e r i st i c s (W or s t - C as e M i l i t a r y Cond i t i o n s , V CC = 4.5 V, TJ = 1 25°C) ‘–1’ Speed ‘Std’ Speed Parameter Description Min. Max. Min. Max. Units Logic Module Propagation Delays1 tPD Internal Array Module 3.0 3.5 ns tCO Sequential Clock to Q 3.0 3.5 ns tCLR Asynchronous Clear to Q 3.0 3.5 ns Logic Module Predicted Routing Delays2 tRD1 FO=1 Routing Delay 1.3 1.5 ns tRD2 FO=2 Routing Delay 1.9 2.1 ns tRD3 FO=3 Routing Delay 2.1 2.5 ns tRD4 FO=4 Routing Delay 2.6 2.9 ns tRD8 FO=8 Routing Delay 4.2 4.9 ns Logic Module Sequential Timing tSUD Flip-Flop (Latch) Data Input Setup 0.9 1.0 ns tHD Flip-Flop (Latch) Data Input Hold 0.0 0.0 ns tSUENA Flip-Flop (Latch) Enable Setup 0.9 1.0 ns tHENA Flip-Flop (Latch) Enable Hold 0.0 0.0 ns tWASYN Asynchronous Pulse Width 3.8 4.4 ns tWCLKA Flip-Flop Clock Pulse Width 3.8 4.4 ns tA Flip-Flop Clock Input Period 7.9 9.3 ns fMAX Flip-Flop Clock Frequency 125 100 MHz Input Module Propagation Delays tINY Input Data Pad to Y 4.2 4.9 ns tICKY Input Reg IOCLK Pad to Y 7.0 8.2 ns tOCKY Output Reg IOCLK Pad to Y 7.0 8.2 ns tICLRY Input Asynchronous Clear to Y 7.0 8.2 ns tOCLRY Output Asynchronous Clear to Y 7.0 8.2 ns Input Module Predicted Routing Delays1, 3 tIRD1 FO=1 Routing Delay 1.3 1.5 ns tIRD2 FO=2 Routing Delay 1.9 2.1 ns tIRD3 FO=3 Routing Delay 2.1 2.5 ns tIRD4 FO=4 Routing Delay 2.6 2.9 ns tIRD8 FO=8 Routing Delay 4.2 4.9 ns Notes: 1. For dual-module macros, use tPD + 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 worst-case performance. Post-route timing is based on actual routing delay measurements performed on the device prior to shipment. 3. Optimization techniques may further reduce delays by 0 to 4 ns. |
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