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Choosing 3.3V CPLD? Leading digital system manufacturers
Yourself
only device cost also expensive board rework costs well.
rapidly adopting 3.3V components higher performance, lower costs, lower power, higher system reliability. With many 3.3V CPLD families being introduced, choices seem confusing overwhelming. simplify your decision, yourself with three most important criteria when choosing 3.3V CPLD family: Architecture, Reliability, Manufacturing-friendliness.
Leading-edge manufacturers continuing
increase operating life digital systems. This puts strain older CPLD technologies developed system life less than years.
More systems incorporating field upgrade
Architecture
RCHITECTURE ELIABILITY ANUFACTURINGFRIENDLINESS
CPLDs commonly used state machine control applications, they often used implement last design fixes before board production. such, they need architectural flexibility adapt last minute changes without assignment changes. maximum protection against unexpected design iterations, architecture should have superior pin-locking characteristics excellent logic resource allocation. should look superior switch matrix routability, wide block fan-in, abundance clocking options, flexible macrocell capability. This will give utmost flexibility make those last-minute changes without reworking your entire board. Device reliability critical issue, many CPLD manufacturers have kept with latest advances. reliability CPLDs large part overall system reliability several reasons: within system instead being externally programmed tested prior board assembly. Thus, programming failure involves
capabilities prolong system life. Because insystem programming done under variable field conditions, programming reliability critical.
should look CPLD family that offers highest level programming reliability data retention, ensure that your designs will continue work under conditions. Flash technology currently offers highest reliability, with endurance rating 10,000 program/ erase cycles years data retention. Most older technologies offer only cycles years data retention. Fortunately, Flash CPLD technologies easily support increased programming reliability levels with additional cost.
Manufacturing-friendliness
Reliability
CPLDs being programmed tested
Working prototypes provide sales dollars until they produced sold. CPLDs enable rapid test development production release, which makes industry-standard, JTAG, insystem programming support invaluable. IEEE 1149.1 (JTAG) interface most popular method in-system programming, because supported most CPLD FPGA vendors. Full conformance JTAG standard, enables suppliers in-system programming test tools easily support your future designs. full compatibility with third party in-system programming suppliers, should look full JTAG Boundary-Scan test capability JTAG insystem programming interface.
FastFLASH XC9500XL Advantage
XC9500XL 3.3V CPLD family uniquely excels three criteria, offers highest level programming reliability JTAGcompatible, in-system programmable family. XC9500XL family features:
most flexible architecture Wide 54-input function blocks* product-terms output* Three global clocks, with local inversion
capability problems
assured that your designs will remain trouble free.
.you rest
Full IEEE 1149.1 (JTAG) test
programming
Immunity from power supply sequencing Compatibility with 3.3V, 2.5V signals Highest reliability rating year data retention* 10,000 endurance cycles*
most complete Boundary-Scan support
with eight instructions* instructions.
JTAG supported in-system programming
Conclusion
yourself with XC9500XL family your 3.3V CPLD needs, rest assured that your designs will remain trouble free.
*These highest available 3.3V CPLD industry.

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