EP3C40 datasheet(15/34 Pages) ALTERA

15 / 34 page

Chapter 1: Cyclone III Device Data Sheet

1–15

Switching Characteristics

Altera Corporation

Cyclone III Device Handbook, Volume 2

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.

PLL Specifications

Table 1–20 describes the PLL specifications for Cyclone III devices when operating in

the commercial junction temperature range (0°C to 85°C), the industrial junction

temperature range (–40°C to 100°C), and the automotive junction temperature range

(–40°Cto 125°C). For more information about PLL block, refer to “PLL Block” in

“Glossary” on page 1–27.

Table 1–19. Cyclone III Devices Clock Tree Performance

Device

Performance

Unit

EP3C5

500

437.5

402

MHz

EP3C10

500

437.5

402

MHz

EP3C16

500

437.5

402

MHz

EP3C25

500

437.5

402

MHz

EP3C40

500

437.5

402

MHz

EP3C55

500

437.5

402

MHz

EP3C80

500

437.5

402

MHz

EP3C120

(1)

437.5

402

MHz

Note to Table 1–19:

(1) EP3C120 offered in C7, C8, and I7 grades only.

Table 1–20. Cyclone III Devices PLL Specifications (Note 1)

(Part 1 of 2)

Symbol

Parameter

Min

Typ

Max

Unit

IN (2)

Input clock frequency

—

472.5

MHz

INPF D

PFD input frequency

—

325

MHz

VC O (3)

PLL internal VCO operating range

600

—

1300

MHz

INDUTY

Input clock duty cycle

—

INJITTER_C CJ (4)

Input clock cycle-to-cycle jitter

REF

≥ 100 MHz

—

0.15

REF < 100 MHz

—

±750

OUT_EXT (external clock output)

(2)

PLL output frequency

—

472.5

MHz

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