What this CPLD actually does
It is in-system programmable (ISP) via JTAG, allowing programming after soldering. The core runs from 1.71 V to 1.89 V.
The package is a 256-ball Fine-Pitch Ball Grid Array (FBGA) measuring 17 mm by 17 mm, providing 212 user I/O pins.
How it compares to the smaller EPM240
The EPM240F100C5N has 192 macrocells versus 980, 80 I/O versus 212, and a 4.7 ns tpd versus 6.2 ns. The EPM1270 is for medium-density logic integration.
