10CL040YF484I7G vs 10CL040YF484C8G

Both are Intel (formerly Altera) Cyclone 10 LP field-programmable gate arrays (FPGAs) in the same 484-pin FineLine BGA (FBGA) package. They share the same logic density of 40,000 logic elements (LEs), the same package and pinout, and the same core architecture. The difference between the two part numbers is the speed grade and the operating temperature range, indicated by the suffix codes.

In Intel FPGA ordering codes, the letter and digit before the final G denote speed grade and temperature range. The "I7" suffix indicates an industrial temperature grade device with speed grade 7. The "C8" suffix indicates a commercial temperature grade device with speed grade 8. The trailing "G" indicates RoHS-compliant lead-free packaging. Industrial-grade devices are specified over a wider ambient temperature range than commercial-grade devices.

Yes. Both devices use the same 484-pin FineLine BGA package with the same pinout, because they are the same Cyclone 10 LP 40K LE die in the same package. This means the PCB footprint and pin assignments are identical, allowing either device to be placed on the same board design provided the speed grade and temperature requirements are met.

Not unconditionally. Although the package and pinout are identical, the two devices differ in speed grade and temperature grade. The I7G is an industrial-temperature, speed grade 7 device, while the C8G is a commercial-temperature, speed grade 8 device. A drop-in replacement is only valid if the target design's timing closure, operating temperature range, and reliability requirements are satisfied by the commercial-grade, speed grade 8 part. Timing and thermal margins must be re-validated against the manufacturer datasheet before substitution.

The 10CL040YF484I7G, with the "I" industrial temperature grade suffix, supports a wider ambient operating temperature range than the 10CL040YF484C8G, which carries the "C" commercial temperature grade suffix. The exact temperature limits should be confirmed from the Intel Cyclone 10 LP device datasheet, as they are defined by the manufacturer's specifications.

Yes. Speed grade directly affects the achievable maximum frequency (Fmax) and timing performance of the FPGA fabric and I/O. A lower speed grade number generally corresponds to faster performance. Because the 10CL040YF484I7G is speed grade 7 and the 10CL040YF484C8G is speed grade 8, their timing characteristics differ. Designers must consult the Intel Cyclone 10 LP datasheet timing models to confirm whether a given design meets its timing requirements on each specific speed grade.

Yes. Both the 10CL040YF484I7G and 10CL040YF484C8G carry the trailing "G" in their ordering code, which indicates RoHS-compliant, lead-free packaging as defined by Intel's ordering information. Designers should still verify the current compliance status against the manufacturer's latest product documentation and environmental declarations.

The primary selection factors are the required operating temperature range and the required timing performance. Choose the 10CL040YF484I7G when the application demands industrial temperature operation and/or the faster speed grade 7 timing. Choose the 10CL040YF484C8G when commercial temperature operation is acceptable and speed grade 8 timing meets the design's Fmax requirements. In both cases, verify logic utilization, I/O count, power budget, and configuration requirements against the Intel Cyclone 10 LP datasheet.