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AT49F2048 Datasheet(PDF) 6 Page - ATMEL Corporation |
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AT49F2048 Datasheet(HTML) 6 Page - ATMEL Corporation |
6 / 11 page AT49F2048 6 Note: 1. This parameter is characterized and is not 100% tested. Pin Capacitance (f = 1 MHz, T = 25°C)(1) Typ Max Units Conditions CIN 46 pF VIN = 0V COUT 812 pF VOUT = 0V Output Test Load Input Test Waveforms and Measurement Level tR, tF < 5 ns AC Read Waveforms(1)(2)(3)(4) Notes: 1. CE may be delayed up to tACC - tCE after the address transition without impact on tACC. 2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE or by tACC - tOE after an address change without impact on tACC. 3. tDF is specified from OE or CE whichever occurs first (CL = 5 pF). 4. This parameter is characterized and is not 100% tested. AC Read Characteristics Symbol Parameter AT49F2048-70 AT49F2048-90 AT49F2048-12 Units Min Max Min Max Min Max tACC Address to Output Delay 70 90 120 ns tCE (1) CE to Output Delay 70 90 120 ns tOE (2) OE to Output Delay 35 0 40 0 50 ns tDF (3)(4) CE or OE to Output Float 0 25 0 25 0 30 ns tOH Output Hold from OE, CE or Address, whichever occurred first 000 ns ADDRESS OUTPUT HIGH Z OUTPUT OE CE tACC tOE tDF tOH tCE VALID ADDRESS VALID |
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