EP2C8T144C7N Altera, EP2C8T144C7N Datasheet - Page 158
EP2C8T144C7N
Manufacturer Part Number
EP2C8T144C7N
Description
IC CYCLONE II FPGA 8K 144-TQFP
Manufacturer
Altera
Series
Cyclone® IIr
Datasheet
1.EP2C5T144C8N.pdf
(168 pages)
Specifications of EP2C8T144C7N
Number Of Logic Elements/cells
8256
Number Of Labs/clbs
516
Total Ram Bits
165888
Number Of I /o
85
Voltage - Supply
1.15 V ~ 1.25 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
144-TQFP, 144-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
Other names
544-1667
Available stocks
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Manufacturer:
Altera
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Duty Cycle Distortion
Figure 5–9. DCD Measurement Technique for Non-DDIO (Single-Data Rate) Outputs
5–68
Cyclone II Device Handbook, Volume 1
clk
DCD Measurement Techniques
DCD is measured at an FPGA output pin driven by registers inside the
corresponding I/O element (IOE) block. When the output is a single data
rate signal (non-DDIO), only one edge of the register input clock (positive
or negative) triggers output transitions
present on the input clock signal, or caused by the clock input buffer, or
different input I/O standard, does not transfer to the output signal.
However, when the output is a double data rate input/output (DDIO)
signal, both edges of the input clock signal (positive and negative) trigger
output transitions
clock and the input clock buffer affect the output DCD.
IOE
(T/2 – D1) / T (the low percentage boundary)
(T/2 + D2) / T (the high percentage boundary)
(Figure
DFF
D
5–10). Therefore, any distortion on the input
Q
(Figure
5–9). Therefore, any DCD
Altera Corporation
output
February 2008
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