FPGA module
TODO: write this page
FPGA comparison:
| EP4C_E6_E22_C8N | EP4C_E15_F23_C8N | 5CEF_A5_F23_I7N
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LEs (K) | 6 | 15 | 77
Mem (Kb/KB) | 270Kb, 33KB | 504Kb, 63KB | 4460Kb, 557KB
PLLs | 2 | 4 | 6
IO | 91 | 343 (108 on PCB) | 240 (108 on PCB)
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FPGC version| 1, 2, ~3 | 3, 4, 5, 6 | 6