EP1S25F672I7N Altera, EP1S25F672I7N Datasheet - Page 104
![IC STRATIX FPGA 25K LE 672-FBGA](/photos/6/73/67394/ds-672fbga205-2_0_sml.jpg)
EP1S25F672I7N
Manufacturer Part Number
EP1S25F672I7N
Description
IC STRATIX FPGA 25K LE 672-FBGA
Manufacturer
Altera
Series
Stratix®r
Datasheet
1.EP1S10F780C7.pdf
(276 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EP1S25F672I7N
Manufacturer:
ALTERA
Quantity:
624
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PLLs & Clock Networks
2–90
Stratix Device Handbook, Volume 1
f
During switchover, the PLL VCO continues to run and will either slow
down or speed up, generating frequency drift on the PLL outputs. The
clock switchover transitions without any glitches. After the switch, there
is a finite resynchronization period to lock onto new clock as the VCO
ramps up. The exact amount of time it takes for the PLL to relock relates
to the PLL configuration and may be adjusted by using the
programmable bandwidth feature of the PLL. The specification for the
maximum time to relock is 100 µs.
For more information on clock switchover, see AN 313, Implementing
Clock Switchover in Stratix & Stratix GX Devices.
PLL Reconfiguration
The PLL reconfiguration feature enables system logic to change Stratix
device enhanced PLL counters and delay elements without reloading a
Programmer Object File (.pof). This provides considerable flexibility for
frequency synthesis, allowing real-time PLL frequency and output clock
delay variation. You can sweep the PLL output frequencies and clock
delay in prototype environments. The PLL reconfiguration feature can
also dynamically or intelligently control system clock speeds or t
delays in end systems.
Clock delay elements at each PLL output port implement variable delay.
Figure 2–54
for the counters and the clock delay elements. The configuration time is
less than 20 μs for the enhanced PLL using a input shift clock rate of
22 MHz. The charge pump, loop filter components, and phase shifting
using VCO phase taps cannot be dynamically adjusted.
shows a diagram of the overall dynamic PLL control feature
Altera Corporation
July 2005
CO
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