EP2C8 datasheet(104/168 Pages) ALTERA

104 / 168 page

5–14

Altera Corporation

Cyclone II Device Handbook, Volume 1

February 2008

Timing Specifications

You should select power supplies and regulators that can supply the

amount of current required when designing with Cyclone II devices.

Altera recommends using the Cyclone II PowerPlay Early Power

Estimator to estimate the user-mode ICCINT consumption and then select

power supplies or regulators based on the values obtained.

Timing

Specifications

The DirectDrive™ technology and MultiTrack™ interconnect ensure

predictable performance, accurate simulation, and accurate timing

analysis across all Cyclone II device densities and speed grades. This

section describes and specifies the performance, internal, external,

high-speed I/O, JTAG, and PLL timing specifications.

This section shows the timing models for Cyclone II devices. Commercial

devices meet this timing over the commercial temperature range.

Industrial devices meet this timing over the industrial temperature range.

Automotive devices meet this timing over the automotive temperature

range. Extended devices meet this timing over the extended temperature

range. All specifications are representative of worst-case supply voltage

and junction temperature conditions.

Preliminary and Final Timing Specifications

Timing models can have either preliminary or final status. The Quartus II

software issues an informational message during the design compilation

if the timing models are preliminary. Table 5–14 shows the status of the

Cyclone II 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.

EP2C8 Datasheet(PDF) 104 Page - Altera Corporation