A18 Processor and C1 MODEM SoC

The Apple A18 processor is about 1.2 cm x 1.2 cm.

The processor function is to provide platforms for various applications while controlling all iPhone interactions with the 3rd parties ASIC and MODEM SoC.

Whereas C1 MODEM is about 1 cm x 1 cm.

MODEM function is to connect Apple devices to the external world.

Currently the A18 Processor and C1 MODEM are standalone SoC.

C1 MODEM design target has been low power consumption.

The data throughput performance is yet to be quantified by Apple.

By 2027 Apple plans to integrate the processor and MODEM into single SoC to further reduce the cost.

Both the processor and MODEM have been CMOS technologies and can technically be integrated into single SoC.

That integration would be challenging yet it saves one package cost.

The silicon package is a significant cost of the overall ASIC, which could be up to 1/3 of its total cost.

Another ~1/3 of the cost is the testing of packaged device and wafer probe.

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