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AT49F040 Datasheet(PDF) 5 Page - ATMEL Corporation |
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AT49F040 Datasheet(HTML) 5 Page - ATMEL Corporation |
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AC Read Characteristics AT49F040-90 AT49F040-12 AT49F040-15 Symbol Parameter Min Max Min Max Min Max Units tACC Address to Output Delay 90 120 150 ns tCE (1) CE to Output Delay 90 120 150 ns tOE (2) OE to Output Delay 0 40 0 50 0 70 ns tDF (3, 4) CE or OE to Output Float 0 25 0 30 0 40 ns tOH Output Hold from OE, CE or Address, whichever occurred first 00 0 ns 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 Waveforms (1, 2, 3, 4) tR, tF < 5 ns Input Test Waveforms and Measurement Level Output Test Load Pin Capacitance (f = 1 MHz, T = 25°C) (1) Typ Max Units Conditions CIN 46 pF VIN = 0V COUT 812 pF VOUT = 0V Note: 1. This parameter is characterized and is not 100% tested. AT49F040 4-213 |
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