特性 Features

? 5 ns pin-to-pin logic delays

? System frequency up to 178 MHz

? 72 macrocells with 1,600 usable gates

? Available in small footprint packages

- 44-pin PLCC (34 user I/O pins)

- 44-pin VQFP (34 user I/O pins)

- 48-pin CSP (38 user I/O pins)

- 64-pin VQFP (52 user I/O pins)

- 100-pin TQFP (72 user I/O pins)

- Pb-free available for all packages

? Optimized for high-performance 3.3V systems

- Low power operation

- 5V tolerant I/O pins accept 5V, 3.3V, and 2.5V

signals

- 3.3V or 2.5V output capability

- Advanced 0.35 micron feature size CMOS

Fast FLASH? technology

? Advanced system features

- In-system programmable

- Superior pin-locking and routability with

Fast CONNECT? II switch matrix

- Extra wide 54-input Function Blocks

- Up to 90 product-terms per macrocell with

individual product-term allocation

- Local clock inversion with three global and one

product-term clocks

- Individual output enable per output pin

- Input hysteresis on all user and boundary-scan pin

inputs

- Bus-hold circuitry on all user pin inputs

- Full IEEE Standard 1149.1 boundary-scan (JTAG)

? Fast concurrent programming

? Slew rate control on individual outputs

? Enhanced data security features

? Excellent quality and reliability

- Endurance exceeding 10,000 program/erase

cycles

- 20 year data retention

- ESD protection exceeding 2,000V

? Pin-compatible with 5V-core XC9572 device in the

44-pin PLCC package and the 100-pin TQFP package

WARNING: Programming temperature range of

TA = 0° C to +70° C

cations and computing systems. It is comprised of four

54V18 Function Blocks, providing 1,600 usable gates with

propagation delays of 5 ns. See Figure 2 for overview.

Power Estimation

Power dissipation in CPLDs can vary substantially depending on the system frequency, design application and output

loading. To help reduce power dissipation, each macrocell

in a XC9500XL device may be configured for low-power

mode (from the default high-performance mode). In addition, unused product-terms and macrocells are automatically deactivated by the software to further conserve power.

For a general estimate of ICC, the following equation may be

used:

ICC(mA) = MCHS(0.175*PTHS + 0.345) + MCLP(0.052*PTLP

+ 0.272) + 0.04 * MCTOG(MCHS +MCLP)* f

where:

MCHS = # macrocells in high-speed configuration

PTHS = average number of high-speed product terms

per macrocell

MCLP = # macrocells in low power configuration

PTLP = average number of low power product terms per

macrocell

f = maximum clock frequency

MCTOG = average % of flip-flops toggling per clock

(~12%)

This calculation was derived from laboratory measurements

of an XC9500XL part filled with 16-bit counters and allowing

a single output (the LSB) to be enabled. The actual ICC

value varies with the design application and should be verified during normal system operation. Figure 1 shows the

above estimation in a graphical form. For a more detailed

discussion of power consumption in this device, see Xilinx