This BB2735-B60 module is designed around Cypress ® CYW20735B0, a Bluetooth 5.0 compliant, 96 MHz CortexTM M4 core, ultra-low-power SoC. It has built in 2 MB ROM that stores Bluetooth stack and offloads flash usage. It has 384 KB RAM on chip to sustain large application code running. This module has integrated a 4 Mbit SPI flash to store the application code. This architecture provides a good flexibility for customers’s application code size expansion throughput Over-the-Air upgrading.