The ML70512 is a CMOS digital IC for use in 2.4 GHz band BluetoothTM systems. This IC incorporates the ARM7TDMI as the CPU core, features a highly expandable architecture, and supports the interfaces for a variety of applications. Since the ML70512 has Oki's Bluetooth protocol stack software installed, when the IC is used in conjunction with the Bluetooth RF transceiver IC, data/voice communications are possible while maintaining interconnectivity with other Bluetooth systems.