MAX II CPLD — 570 LEs, 5.4 ns pin-to-pin
The Intel EPM570F100I5 is a MAX II family CPLD with 570 logic elements and 440 macrocells in a 100-ball FBGA package (11x11 mm). It is in-system programmable, operates from a 2.5 V or 3.3 V internal supply, and delivers a 5.4 ns maximum propagation delay (tpd1). With 76 user I/O pins, it handles board-level glue logic, address decoding, and state-machine control. The industrial temperature range (-40 to 100 °C) suits outdoor telecom cabinets, motor-drive feedback loops, and under-hood automotive modules.
5.4 ns tpd — timing budget for the bus
The 5.4 ns pin-to-pin delay (tpd1) is the number that decides whether this part fits a given signal path. It is fast enough to absorb address decoding between a 100 MHz MCU and its memory map without adding a wait state, and it leaves headroom for a few levels of LUT-based combinatorial logic before the setup-time window closes. Compare this to an older MAX 7000A part like the EPM7128ATI144-10, which has a 5 ns tpd1 but only 8 logic elements — the EPM570F100I5 packs 570 LEs, so you get the speed AND the density for wider state machines or multiple decode blocks in one chip.