描述：The ADSP-2189M is notable for its very large on-chip memory (1.5 MBits) and low power features (2.5v). The ADSP-2189M combines the ADSP-2100 family base architecture (three computational units, data address generators and a program sequencer) with two serial ports, a 16-bit internal DMA port, a byte DMA port, a programmable timer, Flag I/O, and extensive interrupt capabilities
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