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## EP4CE10 Datasheet(PDF) 3 Page - Altera Corporation

 Part No. EP4CE10 Description Cyclone IV Device Datasheet Download 42 Pages Scroll/Zoom 100% Manufacturer ALTERA [Altera Corporation] Direct Link http://www.altera.com Logo

## EP4CE10 Datasheet(HTML) 3 Page - Altera Corporation

 3 / 42 pageChapter 1: Cyclone IV Device Datasheet1–3Operating ConditionsDecember 2013Altera CorporationCyclone IV Device Handbook,Volume 31 A DC signal is equivalent to 100% duty cycle. For example, a signal that overshoots to4.3 V can only be at 4.3 V for 65% over the lifetime of the device; for a device lifetimeof 10 years, this amounts to 65/10ths of a year.Figure 1–1 shows the methodology to determine the overshoot duration. Theovershoot voltage is shown in red and is present on the input pin of the Cyclone IVdevice at over 4.3 V but below 4.4 V. From Table 1–2, for an overshoot of 4.3 V, thepercentage of high time for the overshoot can be as high as 65% over a 10-year period.Percentage of high time is calculated as ([delta T]/T) × 100. This 10-year periodassumes that the device is always turned on with 100% I/O toggle rate and 50% dutycycle signal. For lower I/O toggle rates and situations in which the device is in an idlestate, lifetimes are increased.Table 1–2. Maximum Allowed Overshoot During Transitions over a 10-Year Time Frame forCyclone IV DevicesSymbolParameterCondition (V)Overshoot Duration as % of High TimeUnitViAC InputVoltageVI = 4.20100%VI = 4.2598%VI = 4.3065%VI = 4.3543%VI = 4.4029%VI = 4.4520%VI = 4.5013%VI = 4.559%VI = 4.606%Figure 1–1. Cyclone IV Devices Overshoot Duration3.3 V4.3 V4.4 VTDT