The ADSP-216x Family processors are single-chip microcomputers optimized for digital signal processing (DSP) and other high speed numeric processing applications. The ADSP-216x processors are all built upon a common core with ADSP-2100. Each processor combines the core DSP architecture--computation units, data address generators and program sequencer--with features such as on-chip program ROM and data memory RAM, a programmable timer and two serial ports. The ADSP-2165/ADSP-2166 also adds program memory and power-down mode.