EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 12

• Manufacturer Part Number: EP3SE50F780I3N
• Description: Stratix III
• Manufacturer: Altera

1–2
Table 1–1. Absolute Maximum Ratings for Stratix III Devices
Stratix III Device Handbook, Volume 2
V
V
V
T
I
T
Note to
(1) Supply voltage specifications apply to voltage readings taken at the device pins, not the power supply.
OUT
J
STG
CC_CLKIN
CCBAT
I
Symbol
Table
1–1:
1
Sinusoidal Maximum Allowed Overshoot/Undershoot Voltage
During transitions, input signals may overshoot to the voltage listed in
undershoot to –2.0 V for input currents less than 100 mA and periods shorter than
20 ns.
Table 1–2
overshoot voltage as a percentage over the lifetime of the device. The maximum
allowed overshoot duration is specified as percentage of high-time over the lifetime of
the device.
A DC signal is equivalent to 100% duty cycle. For example, a signal that overshoots to
4.2 V can only be at 4.2 V for 15.8% over the lifetime of the device; for a device lifetime
of 10 years, this is equivalent to 15.8% of ten years which is 18.96 months.
shows how to determine the overshoot duration.
Figure 1–1. Overshoot Duration
In the example shown in
present at the Stratix III pin, up to 4.1 V. From
V, the percentage of high time for overshoot > 3.15 V can be as high as 46% over an
11.4-year period. The percentage of high time is calculated as (delta T/T) * 100. This
11.4-year period assumes the device is always turned on with 100% I/O toggle rate
and 50% duty cycle signal. For lower I/O toggle rates and situations where the device
is in an idle state, lifetimes are increased.
Differential clock input power supply (top and bottom I/O
banks only)
Battery back-up power supply for design security volatile
key register
DC Input voltage
Operating junction temperature
DC output current, per pin
Storage temperature (No bias)
lists the maximum allowed input overshoot voltage and the duration of the
Parameter
4.1 V
3.15 V
3.0 V
Figure
Chapter 1: Stratix III Device Datasheet: DC and Switching Characteristics
1–1, the overshoot voltage is shown in red and is
(Note 1)
ΔT
(Part 2 of 2)
T
Table
1–2, for an overshoot of up to 4.1
Minimum
-0.5
-0.5
-0.5
-55
-25
-65
© July 2010 Altera Corporation
Maximum
Electrical Characteristics
3.75
3.75
125
150
4.0
40
Table 1–2
Figure 1–1
Unit
mA
°C
°C
V
V
V
and