The CEA 3207A is a device of Micronas’ 32-bit Car Entertainment Controller family based on an ARM7TDMI^TM CPU core.

Like the already available CDC 3207G, the CEA 3207A is part of the LEAP family concept (Low Emission Automotive Processor).

The microcontroller with its ARM7TDMI RISC CPU core allows two states of operation: ARM^ state with 32-bit instructions and THUMB state with 16-bit instructions.

It is suited for entertainment-related applications like car radio or navigation systems. The current version CEA 3207A offers 32 kBytes of SRAM, 512 kBytes of Flash, and 8 kBytes of boot ROM. Communication is possible via two FullCAN modules, two I²C modules and two UART or SPI modules each. Due to its scalable architecture, further derivatives can be obtained within short lead time. An upgrade version with 1 MByte Flash and up to 64 kBytes RAM, as well as a downgrade version with 256 kBytes Flash and 16 kBytes RAM in the same package is planned. All devices have the patented built-in ERM (EMI Reduction Module) and are operated on a single 5-V power supply.

System Architecture

The Car Entertainment Controller CEA 3207A contains an embedded ARM7-TDMI processor which operates at a maximum clock frequency of 50 MHz.

Internally, this device works with different supply voltages: 2.5 V for the core and 3.3 V for the Flash memory.

The system is scalable in terms of Flash memory, RAM, CAN, and the number of peripherals and can be expanded up to 1 MByte of Flash memory.

The built-in ERM delivers superb EMI results reducing the peak values by up to 10 dBμV.

Block diagram of the CEA 3207A

Main Features