The Intel EPM570T100I5 is a MAX® II CPLD packing 570 logic elements and 440 macrocells in a 100-TQFP (14x14 mm) package. That logic density sits between a small FPGA and a traditional PAL/GAL — enough to absorb a few dozen 8-bit state machines, a UART, and some glue logic without needing a separate boot PROM. The 5.4 ns max pin-to-pin delay (tpd1) means combinatorial paths settle within one 185 MHz clock period — fast enough for address decoding, bus arbitration, or high-speed counter chains on a 100 MHz system bus.
I/O count and supply voltage — fit check for the BOM
76 user I/O pins are available, all routed to the 100-TQFP perimeter. The 0.5 mm pitch demands a 4-layer PCB for clean fan-out — two-layer boards will struggle to escape the inner rows without vias.
In-system programmable — no external programmer needed
The device is in-system programmable via JTAG. That means the blank CPLD goes onto the board during assembly, and the firmware gets loaded through the test header at the end of the line — no pre-programmed inventory, no socketed part, no UV eraser.