The Broadcom chip used in the Raspberry Pi 2 Model B
The underlying architecture in BCM2836 is identical to BCM2835. The only significant difference is the removal of the ARM1176JZF-S processor and replacement with a quad-core Cortex-A7 cluster.
Please refer to:
Also see the chip used in the Raspberry Pi Model A, B, B+, the Compute Module, and the Raspberry Pi Zero, BCM2835