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AT28C256F-25JI Datasheet(PDF) 5 Page - ATMEL Corporation |
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AT28C256F-25JI Datasheet(HTML) 5 Page - ATMEL Corporation |
5 / 14 page AT28C256-15 AT28C256-20 AT28C256-25 AT28C256-35 Symbol Parameter Min Max Min Max Min Max Min Max Units tACC Address to Output Delay 150 200 250 350 ns tCE (1) CE to Output Delay 150 200 250 350 ns tOE (2) OE to Output Delay 0 70 0 80 0 100 0 100 ns tDF (3, 4) CE or OE to Output Float 0 50 0 55 0 60 0 70 ns tOH Output Hold from OE, CE or Address, whichever occurred first 000 0 ns AC Read Characteristics 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 < 5ns Input Test Waveforms and Measurement Level Output Test Load Typ Max Units Conditions CIN 46 pF VIN = 0V COUT 812 pF VOUT = 0V Pin Capacitance (f = 1 MHz, T = 25°C) (1) Note: 1. This parameter is characterized and is not 100% tested. AT28C256 2-221 |
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