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1–14
Chapter 1: Cyclone III Device Datasheet
Switching Characteristics
Power Consumption
You can use the following methods to estimate power for a design:
■
■
the Excel-based EPE.
the Quartus II PowerPlay power analyzer feature.
The interactive Excel-based EPE is used prior to designing the device to get a
magnitude estimate of the device power. The Quartus II PowerPlay power analyzer
provides better quality estimates based on the specifics of the design after place-and-
route is complete. The PowerPlay power analyzer can apply a combination of user-
entered, simulation-derived, and estimated signal activities which, combined with
detailed circuit models, can yield very accurate power estimates.
f For more information about power estimation tools, refer to the Early Power Estimator
User Guide and the PowerPlay Power Analysis chapter in volume 3 of the Quartus II
Handboo k.
Switching Characteristics
This section provides the performance characteristics of the core and periphery blocks
for Cyclone III devices. All data is final and is based on actual silicon characterization
and testing. These numbers reflect the actual performance of the device under
worst-case silicon process, voltage, and junction temperature conditions.
Core Performance Specifications
Clock Tree Specifications
Table 1–19 lists the clock tree specifications for Cyclone III devices.
Table 1–19. Cyclone III Devices Clock Tree Performance
Performance
Device
Unit
C6
C7
C8
EP3C5
EP3C10
EP3C16
EP3C25
EP3C40
EP3C55
EP3C80
EP3C120
500
500
500
500
500
500
500
(1)
437.5
437.5
437.5
437.5
437.5
437.5
437.5
437.5
402
402
402
402
402
402
402
402
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Note to Table 1–19 :
(1) EP3C120 offered in C7, C8, and I7 grades only.
Cyclone III Device Handbook
Volume 2
July 2012 Altera Corporation
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