VIN Maximum Allowed AC Voltage Overshoot and Undershoot - DS930

Spartan UltraScale+ FPGA Data Sheet: DC and AC Switching Characteristics (DS930)
Document ID
DS930
Release Date
2025-12-19
Revision
1.2 English
Table 1. VIN Maximum Allowed AC Voltage Overshoot and Undershoot for HD I/O Banks
AC Voltage Overshoot 1 % of UI 2 at –40°C to 100°C AC Voltage Undershoot 1 % of UI 2 at –40°C to 100°C
VCCO + 0.30 100% –0.30 100%
VCCO + 0.35 100% –0.35 90%
VCCO + 0.40 100% –0.40 78%
VCCO + 0.45 100% –0.45 40%
VCCO + 0.50 100% –0.50 24%
VCCO + 0.55 100% –0.55 18.0%
VCCO + 0.60 100% –0.60 13.0%
VCCO + 0.65 100% –0.65 10.8%
VCCO + 0.70 92% –0.70 9.0%
VCCO + 0.75 92% –0.75 7.0%
VCCO + 0.80 92% –0.80 6.0%
VCCO + 0.85 92% –0.85 5.0%
VCCO + 0.90 92% –0.90 4.0%
VCCO + 0.95 92% –0.95 2.5%
  1. A total of 200 mA per bank should not be exceeded.
  2. For UI smaller than 20 µs.
Table 2. VIN Maximum Allowed AC Voltage Overshoot and Undershoot for HP I/O Banks
AC Voltage Overshoot 1 % of UI 2 at –40°C to 100°C AC Voltage Undershoot 1 % of UI 2 at –40°C to 100°C
VCCO + 0.30 100% –0.30 100%
VCCO + 0.35 100% –0.35 100%
VCCO + 0.40 92% –0.40 92%
VCCO + 0.45 50% –0.45 50%
VCCO + 0.50 20% –0.50 20%
VCCO + 0.55 10% –0.55 10%
VCCO + 0.60 6% –0.60 6%
VCCO + 0.65 2% –0.65 2%
VCCO + 0.70 2% –0.70 2%
  1. A total of 200 mA per bank should not be exceeded.
  2. For UI smaller than 20 µs.
Table 3. VIN Maximum Allowed AC Voltage Overshoot and Undershoot for XP5IO I/O Banks
AC Voltage Overshoot 1 % of UI 2 at –40°C to 100°C AC Voltage Undershoot 1 % of UI 2 at –40°C to 100°C
VCCO + 0.10 100% –0.10 100%
VCCO + 0.15 100% –0.15 40%
VCCO + 0.20 100% –0.20 10%
VCCO + 0.25 100% –0.25 0%
VCCO + 0.30 70% –0.30 0%
VCCO + 0.35 30% –0.35 0%
VCCO + 0.40 16% –0.40 0%
VCCO + 0.45 10% –0.45 0%
  1. A total of 200 mA per bank should not be exceeded.
  2. For UI smaller than 20 µs.
  3. In XP5IO banks, VIN overshoot above VCCO and undershoot below GND can reduce the performance of VREF-based receivers within the same nibble.