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24LC640-P Datasheet(PDF) 3 Page - Microchip Technology |
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24LC640-P Datasheet(HTML) 3 Page - Microchip Technology |
3 / 12 page 25AA640/25LC640/25C640 © 1997 Microchip Technology Inc. Preliminary DS21223A-page 3 TABLE 1-3: AC CHARACTERISTICS All parameters apply over the specified operating ranges unless otherwise noted. Commercial (C): Tamb = 0 °C to +70°C VCC = 1.8V to 5.5V Industrial (I): Tamb = -40 °C to +85°C VCC = 1.8V to 5.5V Automotive (E): Tamb = -40 °C to +125°C VCC = 4.5V to 5.5V (25C640 only) Parameter Symbol Min Max Units Test Conditions Clock Frequency FCLK — — — 3 2 1 MHz MHz MHz VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V CS Setup Time TCSS 100 250 500 — — — ns ns ns VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V CS Hold Time TCSH 150 250 475 — — — ns ns ns VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V CS Disable Time TCSD 500 — ns Data Setup Time TSU 30 50 50 — — — ns ns ns VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V Data Hold Time THD 50 100 100 — — — ns ns ns VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V CLK Rise Time TR — 2 µs (Note 1) CLK Fall Time TF — 2 µs (Note 1) Clock High Time THI 150 250 475 — — — ns ns ns VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V Clock Low Time TLO 150 250 475 — — — ns ns ns VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V Clock Delay Time TCLD 50 — ns Clock Enable Time TCLE 50 — ns Output Valid from Clock Low TV — — — 150 250 475 ns ns ns VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V Output Hold Time THO 0 — ns (Note 1) Output Disable Time TDIS — — — 200 250 500 ns ns ns VCC = 4.5V to 5.5V (Note 1) VCC = 2.5V to 4.5V (Note 1) VCC = 1.8V to 2.5V (Note 1) HOLD Setup Time THS 100 100 200 — — — ns ns ns VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V HOLD Hold Time THH 100 100 200 — — — ns ns ns VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V HOLD Low to Output High-Z THZ 100 150 200 — — — ns ns ns VCC = 4.5V to 5.5V (Note 1) VCC = 2.5V to 4.5V (Note 1) VCC = 1.8V to 2.5V (Note 1) HOLD High to Output Valid THV 100 150 200 — — — ns ns ns VCC = 4.5V to 5.5V VCC = 2.5V to 4.5V VCC = 1.8V to 2.5V Internal Write Cycle Time TWC — 5 ms Endurance — 1M — E/W Cycles (Note 2) Note 1: This parameter is periodically sampled and not 100% tested. 2: This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific application, please consult the Total Endurance Model which can be obtained on Microchip’s BBS or website. |
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