400K-gate ProASIC3 FPGA in 256-FPBGA
The A3P400-FGG256I is a non-volatile flash-based FPGA from Microchip's ProASIC3 family, offering 400000 system gates and 178 user I/O in a 256-FPBGA (17x17 mm) package. The single-core supply range of 1.425V to 1.575V simplifies the power tree — one rail for the core, separate banks for the I/O. The industrial temperature grade (-40°C to 100°C junction) suits outdoor telecom, motor-drive, and under-hood automotive-adjacent applications where the ambient can push past 85°C.
178 I/O and 55 Kbit block RAM
With 178 I/O available, this part fits mid-density glue-logic consolidation or sensor-fusion designs that need parallel bus interfaces. The 55296 total RAM bits support small FIFOs, coefficient look-up tables, or register files without external SRAM.
The 1.0 mm ball pitch is a standard BGA that routes on a 4-layer board without microvias.