EP1S25F672I7N Altera, EP1S25F672I7N Datasheet - Page 227

• Manufacturer Part Number: EP1S25F672I7N
• Description: IC STRATIX FPGA 25K LE 672-FBGA
• Manufacturer: Altera
• Series: Stratix®r

Specifications of EP1S25F672I7N

• Number Of Logic Elements/cells: 25660
• Number Of Labs/clbs: 2566
• Total Ram Bits: 1944576
• Number Of I /o: 473
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 672-FBGA
• Family Name: Stratix
• Number Of Logic Blocks/elements: 25660
• # I/os (max): 473
• Frequency (max): 420.17MHz
• Process Technology: 0.13um (CMOS)
• Operating Supply Voltage (typ): 1.5V
• Logic Cells: 25660
• Ram Bits: 1944576
• Operating Supply Voltage (min): 1.425V
• Operating Supply Voltage (max): 1.575V
• Operating Temp Range: -40C to 100C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 672
• Package Type: FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Lead Free Status / Rohs Status: Compliant

Altera Corporation
January 2006
Definition of I/O Skew
I/O skew is defined as the absolute value of the worst-case difference in
clock-to-out times (t
common clock source.
I/O bank skew is made up of the following components:
■
■
Figure 4–5
bank, being fed by a common clock source. The clock can come from an
input pin or from a PLL output.
Figure 4–5. I/O Skew within an I/O Bank
Clock network skews: This is the difference between the arrival times
of the clock at the clock input port of the two IOE registers.
Package skews: This is the package trace length differences between
(I/O pad A to I/O pin A) and (I/O pad B to I/O pin B).
Slow Edge
Common Source of GCLK
shows an example of two IOE registers located in the same
I/O Pin B
Fast Edge
I/O Pin A
I/O Skew
CO
I/O Bank
) between any two output registers fed by a
I/O Skew
Stratix Device Handbook, Volume 1
DC & Switching Characteristics
I/O Pin A
I/O Pin B
4–57