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AT24C256B Datasheet(PDF) 5 Page - ATMEL Corporation |
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AT24C256B Datasheet(HTML) 5 Page - ATMEL Corporation |
5 / 24 page 5 5279C–SEEPR–3/09 AT24C256B Notes: 1. This parameter is ensured by characterization and is not 100% tested. 2. AC measurement conditions: RL (connects to VCC): 1.3 kΩ (2.5V, 5.5V), 10 kΩ (1.8V) Input pulse voltages: 0.3 VCC to 0.7 VCC Input rise and fall times: ≤ 50 ns Input and output timing reference voltages: 0.5 VCC Table 3-3. AC Characteristics (Industrial Temperature) Applicable over recommended operating range from TAI = − 40°C to +85°C, VCC = +1.8V to +5.5V, CL = 100 pF (unless oth- erwise noted). Test conditions are listed in Note 2. Symbol Parameter 1.8-volt 2.5, 5.0-volt Units Min Max Min Max fSCL Clock Frequency, SCL 400 1000 kHz tLOW Clock Pulse Width Low 1.3 0.4 µs tHIGH Clock Pulse Width High 0.6 0.4 µs ti Noise Suppression Time(1) 100 50 ns tAA Clock Low to Data Out Valid 0.05 0.9 0.05 0.55 µs tBUF Time the bus must be free before a new transmission can start(1) 1.3 0.5 µs tHD.STA Start Hold Time 0.6 0.25 µs tSU.STA Start Set-up Time 0.6 0.25 µs tHD.DAT Data In Hold Time 0 0 µs tSU.DAT Data In Set-up Time 100 100 ns tR Inputs Rise Time(1) 0.3 0.3 µs tF Inputs Fall Time(1) 300 100 ns tSU.STO Stop Set-up Time 0.6 0.25 µs tDH Data Out Hold Time 50 50 ns tWR Write Cycle Time 5 5 ms Endurance(1) 25°C, Page Mode, 3.3V 1,000,000 Write Cycles |
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