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PZ3064-12A84 Datasheet(PDF) 6 Page - NXP Semiconductors |
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PZ3064-12A84 Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 20 page Philips Semiconductors Product specification PZ3064 64 macrocell CPLD 1997 Mar 05 86 Simple Timing Model Figure 4 shows the CoolRunner ™ Timing Model. The CoolRunner™ timing model looks very much like a 22V10 timing model in that there are three main timing parameters, including tPD, tSU, and tCO. In other competing architectures, the user may be able to fit the design into the CPLD, but is not sure whether system timing requirements can be met until after the design has been fit into the device. This is because the timing models of competing architectures are very complex and include such things as timing dependencies on the number of parallel expanders borrowed, sharable expanders, varying number of X and Y routing channels used, etc. In the XPLA ™ architecture, the user knows up front whether the design will meet system timing requirements. This is due to the simplicity of the timing model. For example, in the PZ3064 device, the user knows up front that if a given output uses 5 product terms or less, the tPD = 10ns, the tSU_PAL = 6ns, and the tCO = 7ns. If an output is using 6 to 37 product terms, an additional 2ns must be added to the tPD and tSU timing parameters to account for the time to propagate through the PLA array. TotalCMOS ™ Design Technique for Fast Zero Power Philips is the first to offer a TotalCMOS ™ CPLD, both in process technology and design technique. Philips employs a cascade of CMOS gates to implement its Sum of Products instead of the traditional sense amp approach. This CMOS gate implementation allows Philips to offer CPLDs which are both high performance and low power, breaking the paradigm that to have low power, you must have low performance. Refer to Figure 5 and Table 2 showing the IDD vs. Frequency of our PZ3064 TotalCMOS ™ CPLD. OUTPUT PIN INPUT PIN SP00441 tPD_PAL = COMBINATORIAL PAL ONLY tPD_PLA = COMBINATORIAL PAL + PLA CLOCK OUTPUT PIN INPUT PIN DQ REGISTERED tSU_PAL = PAL ONLY tSU_PLA = PAL + PLA REGISTERED tCO Figure 4. CoolRunner ™ Timing Model TYPICAL IDD (mA) FREQUENCY (MHz) SP00460A 0 20 40 60 80 100 0 20 40 60 80 100 Figure 5. IDD vs. Frequency @ VDD = 3.3V, 25°C Table 2. IDD vs. Frequency VDD = 3.3V FREQUENCY (MHz) 0 20 40 60 80 100 Typical IDD ( mA) 0.04 13 26 40 50 63 |
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