EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 215

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

Introduction
Altera Corporation-Preliminary
March 2007
CIII51009-1.0
In addition to an abundant supply of on-chip memory, Cyclone
devices can easily interface to a broad range of external memory
including DDR2 SDRAM, DDR SDRAM, and QDRII SRAM. External
memory devices are an important system component of a wide range of
image processing, storage, communications, and general embedded
applications.
Cyclone III devices are supported with a comprehensive infrastructure to
create robust external memory interfaces.
benefits of Cyclone III external memory interfaces.
Benefit
Robust
Easy to use
Resource Efficient
Good Performance
Table 9–1. Major Benefits of Cyclone III Memory Interfaces
Cyclone III Solution Description
Self-calibrating to adjust for process, voltage, and
temperature changes
●
●
●
Maximum of 5 global clocks for ×72 interface
●
Interfaces in Cyclone III
Push button timing closure
DDR2/DDR available on all sides to ease PCB
layout constraints
Half rate solution available to lower f
requirements
200 MHz DDR2 SDRAM on fastest speed grade
9. External Memory
Table 9–1
highlights the major
Devices
MAX
Preliminary
®
III
9–1