The ADSP-2187NBSTZ-320 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.
- Single-cycle instruction execution
- Single-cycle context switch
- Low CMOS standby power dissipation with 200 CLKIN cycle recoveries from power-down condition
- Low power dissipation in idle mode
- Up to 48K words program memory RAM
- Up to 56K words data memory RAM
- Dual-purpose program memory for both instruction and data storage
- Two independent data address generators
- Powerful program sequencer provides zero overhead looping conditional instruction execution
- Programmable 16-bit interval timer with pre-scalar
- 80MHz Instruction rate
- 12.5ns Instruction cycle time at 1.8V (internal)
- 80 MIPS sustained performance
- 3-bus Architecture allows dual operand fetches in every instruction cycle
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