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AT24C256N-10SU-2.7 Datasheet(PDF) 5 Page - ATMEL Corporation |
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AT24C256N-10SU-2.7 Datasheet(HTML) 5 Page - ATMEL Corporation |
5 / 23 page 5 AT24C128/256 0670T–SEEPR–3/07 Table 4. AC Characteristics – Industrial Temperatures Notes: 1. This parameter is characterized and is not 100% tested. 2. AC measurement conditions: R L (connects to VCC): 1.3 kΩ (2.5V, 5V), 10 kΩ (1.8V) Input pulse voltages: 0.3 V CC to 0.7 VCC Input rise and fall times: ≤50 ns Input and output timing reference voltages: 0.5 V CC 3. The Write Cycle Time of 5 ms only applies to the AT24C128/256 devices bearing the process letter “B” on the package (the mark is located in the lower right corner on the top side of the package). 4. The AT24C128/256 bearing the process letter “B” in the package (the mark is located in the lower right corner on the top side of the package), guarantees 1 million write cycle endurance (1.8 – 3.6V). Applicable over recommended operating range from T AI = –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-volt 5.0-volt Units Min Max Min Max Min Max fSCL Clock Frequency, SCL 100 400 1000 kHz tLOW Clock Pulse Width Low 4.7 1.3 0.4 µs t HIGH Clock Pulse Width High 4.0 0.6 0.4 µs tAA Clock Low to Data Out Valid 0.1 4.5 0.05 0.9 0.05 0.55 µs tBUF Time the bus must be free before a new transmission can start(1) 4.7 1.3 0.5 µs tHD.STA Start Hold Time 4.0 0.6 0.25 µs tSU.STA Start Set-up Time 4.7 0.6 0.25 µs t HD.DAT Data In Hold Time 0 0 0 µs tSU.DAT Data In Set-up Time 200 100 100 ns tR Inputs Rise Time(1) 1.0 0.3 0.3 µs t F Inputs Fall Time(1) 300 300 100 ns tSU.STO Stop Set-up Time 4.7 0.6 0.25 µs tDH Data Out Hold Time 100 50 50 ns t WR Write Cycle Time 20 or 5(3) 10 or 5(3) 10 or 5(3) ms Endurance(1) 25°C, Page Mode 100k or 1,000,000(4) Write Cycles |
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