EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 441

• Manufacturer Part Number: EP3C16F256I7N
• Description: Cyclone III
• Manufacturer: Altera

Cyclone III Device Datasheet: DC & Switching Characteristics
I/O Timing
Altera Corporation-Preliminary
March 2007
Timing Model
The DirectDrive
predictable performance, accurate simulation, and accurate timing
analysis across all Cyclone III device densities and speed grades. This
section describes and specifies the performance of I/Os and internal
timing.
All specifications are representative of worst-case supply voltage and
junction temperature conditions.
1
Preliminary, Correlated & Final Timing
Timing models can have either preliminary, correlated, or final status. The
Quartus II software issues an informational message during the design
compilation if the timing models are preliminary.
status of the Cyclone III device timing models.
Preliminary status means the timing model is subject to change. Initially,
timing numbers are created using simulation results, process data, and
other known parameters. These tests are used to make the preliminary
numbers as close to the actual timing parameters as possible.
Correlated numbers are based on actual device operation and testing.
These numbers reflect the actual performance of the device under
worst-case voltage and junction temperature conditions.
Final timing numbers are based on complete correlation to actual devices
and addressing any minor deviations from the correlated timing model.
When the timing models are final, all or most of the Cyclone III family
devices have been completely characterized and no further changes to the
timing model are expected.
Table 1–40. Cyclone III Device Timing Model Status
EP3C10
EP3C16
EP3C25
EP3C40
EP3C5
Device
The timing numbers listed in the tables of this section are
extracted from the Quartus II software version 7.0 Build 31.
TM
technology and MultiTrack
Preliminary
(1)
v
v
v
v
Correlated
TM
interconnect ensure
Table 1–40
Cyclone III Handbook
shows the
Final
1–31