Visible to Intel only — GUID: fhl1583213360396
Ixiasoft
Visible to Intel only — GUID: fhl1583213360396
Ixiasoft
Maximum Allowed Overshoot and Undershoot Voltage
During transitions, input signals may overshoot to the voltage listed in the following tables and undershoot to –1.1 V when using VCCIO_HPS/ VCCIO_SDM of 1.8 V and –0.3 V when using VCCIO_PIO of 1.2 V for input currents less than 100 mA and periods shorter than 20 ns.
No overshooting beyond 1.7 V and undershooting below 0 V is allowed when using VCCIO_PIO = 1.5 V.
The maximum allowed overshoot duration is specified as a percentage of high time (calculated as ([delta T]/T) × 100) over the lifetime of the device. A DC signal is equivalent to 100% duty cycle.
Symbol | Description | Condition (V) | Overshoot Duration as % at TJ = 100°C | Unit |
---|---|---|---|---|
Vi (AC) | AC input voltage | VCCIO_PIO + 0.30 | 100 | % |
VCCIO_PIO + 0.35 | 37 | % | ||
VCCIO_PIO + 0.40 | 9 | % | ||
VCCIO_PIO + 0.45 | 3 | % | ||
VCCIO_PIO + 0.50 | 1 | % | ||
> VCCIO_PIO + 0.50 | No overshoot allowed | % |
Symbol | Description | Condition (V) | Overshoot Duration as % at TJ = 100°C | Unit |
---|---|---|---|---|
Vi (AC) | AC input voltage | VCCIO_SDM + 0.30, VCCIO_HPS + 0.30 | 100 | % |
VCCIO_SDM + 0.35, VCCIO_HPS + 0.35 | 60 | % | ||
VCCIO_SDM + 0.40, VCCIO_HPS + 0.40 | 30 | % | ||
VCCIO_SDM + 0.45, VCCIO_HPS + 0.45 | 20 | % | ||
VCCIO_SDM + 0.50, VCCIO_HPS + 0.50 | 10 | % | ||
VCCIO_SDM + 0.55, VCCIO_HPS + 0.55 | 6 | % | ||
>VCCIO_SDM + 0.55, >VCCIO_HPS + 0.55 | No overshoot allowed | % |
For example, when using 1.2 V I/O standard with 1.26 V VCCIO_PIO, a signal that overshoots to 1.71 V can only be at 1.71 V for ~3% over the lifetime of the device. For an overshoot of 1.56 V, the percentage of high time for the overshoot can be as high as 100% over the lifetime of the device.