鈩?/div>
Interconnect continuous routing structure for fast,
predictable interconnect delays
鈥?Dedicated carry chain that implements arithmetic functions such
as fast adders, counters, and comparators (automatically used by
software tools and megafunctions)
鈥?Dedicated cascade chain that implements high-speed, high-fan-in
logic functions (automatically used by software tools and
megafunctions)
鈥?Tri-state emulation that implements internal tri-state nets
Powerful I/O pins
鈥?Programmable output slew-rate control reduces switching noise
Peripheral register for fast setup and clock-to-output delay
Table 1. FLEX 8000 Device Features
Feature
Usable gates
Flipflops
Logic array blocks (LABs)
Logic elements (LEs)
Maximum user I/O pins
JTAG BST circuitry
Altera Corporation
A-DS-F8000-09.11
EPF8282A
EPF8452A
EPF8282AV
2,500
282
26
208
78
Yes
4,000
452
42
336
120
No
EPF8636A
6,000
636
63
504
136
Yes
EPF8820A
8,000
820
84
672
152
Yes
EPF81188A EPF81500A
12,000
1,188
126
1,008
184
No
16,000
1,500
162
1,296
208
Yes
1