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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS4C4M4DG-7/XT датащи(PDF) 4 Page - Austin Semiconductor |
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AS4C4M4DG-7/XT датащи(HTML) 4 Page - Austin Semiconductor |
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4 / 19 page  16 Me 16 Me 16 Me 16 Me 16 Meg FPM DRAM g FPM DRAM g FPM DRAM g FPM DRAM g FPM DRAM AS4C4M4 AustinSemiconductor,Inc.reservestherighttochangeproductsorspecificationswithoutnotice. 4 AS4C4M4 Rev. 1.1 06/05 Austin Semiconductor, Inc. CAPACITANCE (T A < +25oC ; Vcc = 5V +10%) PARAMETER SYMBOL MAX UNITS Input capacitance (A0 - A11) CIN1 6pF Input capacitance (RAS\, CAS\, W\, OE\) CIN2 8pF Output capacitance (DQ0 - DQ3) CDQ 8pF ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC OPERATING CONDITIONS1,2 (-55oC<T A <+125oC & -40oC<T A <+85oC; Vcc = 5V +10%; V IH /V IL = 2.4/0.8V; V OH /V OL = 2.4/0.4V) MIN MAX MIN MAX tRC Random read or write cycle time 110 130 ns tRWC Read-modify-write cycle time 155 185 ns tRAC Access time from RAS\ 60 70 ns 3, 4, 10 tCAC Access time from CAS\ 15 20 ns 3, 4, 5 tAA Access time from column address 30 35 ns 3, 10 tCLZ CAS\ to output in Low-Z 0 0 ns 3 tOFF Output buffer turn-off delay 0 15 0 15 ns 6 tT Transition time (raise and fall) 3 50 3 50 ns 2 tRP RAS\ precharge time 40 50 ns tRAS RAS\ pulse width 60 10K 70 10K ns tRSH RAS\ hold time 15 17 ns tCSH CAS\ hold time 60 65 ns tCAS CAS\ pulse width 15 10K 18 10K ns tRCD RAS\ to CAS\ delay time 20 45 25 50 ns 4 tRAD RAS\ to column address delay time 15 30 17 35 ns 10 tCRP CAS\ to RAS\ precharge time 5 5 ns tASR Row address set-up time 0 0 ns tRAH Row address hold time 10 10 ns tASC Column address set-up time 0 0 ns tCAH Column address hold time 10 12 ns tRAL Column address to RAS\ lead time 30 35 ns tRCS Read command set-up time 0 0 ns tRCH Read command hold time referenced to CAS\ 0 0 ns 8 tRRH Read command hold time referenced to RAS\ 0 0 ns 8 tWCH Write command hold time 10 12 ns tWP Write command pulse width 10 12 ns tRWL Write command to RAS\ lead time 15 17 ns tCWL Write command to CAS\ lead time 15 17 ns UNITS NOTES SYMBOL PARAMETER -60 -70 |
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