ADSP-2187NBSTZ-320

ANALOG DEVICES  ADSP-2187NBSTZ-320  芯片, 数字信号处理器, 浮点, 16位, 80MHZ, LQFP-100

The is a single-chip Digital Signal Processing Microcomputer is pin-compatible and is differentiated solely by the amount of on-chip SRAM. This feature, combined with ADSP-21xx code compatibility, provides a great deal of flexibility in the design decision. ADSP-2187N series members combine 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, extensive interrupt capabilities and on-chip program and data memory. ADSP-2187N series members integrate up to 256K bytes of on-chip memory configured as up to 48K words 24-bit of program RAM and up to 56K words 16-bit of data RAM. Power down circuitry is also provided to meet the low power needs of battery-operated portable equipment.

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Single-cycle instruction execution

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Single-cycle context switch

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Low CMOS standby power dissipation with 200 CLKIN cycle recoveries from power-down condition

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Low power dissipation in idle mode

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Up to 48K words program memory RAM

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Up to 56K words data memory RAM

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Dual-purpose program memory for both instruction and data storage

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Two independent data address generators

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Powerful program sequencer provides zero overhead looping conditional instruction execution

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Programmable 16-bit interval timer with pre-scalar

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80MHz Instruction rate

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12.5ns Instruction cycle time at 1.8V internal

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80 MIPS sustained performance

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3-bus Architecture allows dual operand fetches in every instruction cycle