5V ， 3.3V ， ISRTM高性能的CPLD 5V, 3.3V, ISRTM High-Performance CPLDs
General Description
The Ultra37000™ family of CMOSCPLDs provides a range of high-density programmable logic solutions with unparalleled system performance. The Ultra37000 family is designed to bring the flexibility, ease of use, and performance of the 22V10 to high-density CPLDs. The architecture is based on a number of logic blocks that are connected by a Programmable Interconnect Matrix PIM.
Features
• In-System Reprogrammable™ ISR™ CMOS CPLDs
— JTAG interface for reconfigurability
— Design changes do not cause pinout changes
— Design changes do not cause timing changes
• High density
— 32 to 512 macrocells
— 32 to 264 I/O pins
— Five dedicated inputs including four clock pins
• Simple timing model
— No fanout delays
— No expander delays
— No dedicated vs. I/O pin delays
— No additional delay through PIM
— No penalty for using full 16 product terms
— No delay for steering or sharing product terms
• 3.3V and 5V versions
• PCI-compatible[1]
• Programmable bus-hold capabilities on all I/Os
• Intelligent product term allocator provides:
— 0 to 16 product terms to any macrocell
— Product term steering onan individual basis
— Product term sharing among local macrocells
• Flexible clocking
— Four synchronous clocks per device
— Product term clocking
— Clock polarity control per logic block
• Consistent package/pinout offering across all densities
— Simplifies design migration
— Same pinout for 3.3V and 5.0V devices
• Packages
— 44 to 400 leads in PLCC, CLCC, PQFP, TQFP, CQFP, BGA, and Fine-Pitch BGA packages
— LeadPb-free packages available
