The ACE9050 provides the control and interface functions needed for AMPS or TACS analog cellular handsets. The device has been designed using Mitel Semiconductor submicron CMOS technology for low power and high performance. The ACE9050 contains an embedded microcontroller and peripheral functions. The controller is of the 6303 type with a Serial Communication Interface, Timer, ROM and RAM. The peripheral functions are: Data Modem, SAT Management, Serial Chip Interfaces, I 2C Interface, two Pulse Width Modulators, IFC Counter, Tone generator, I/O ports, Watchdog and Crystal Oscillator.