Features and Benefits

  • 25 ns Instruction Cycle Time from 20 MHz Crystal @ 5.0 Volts
  • 40 MIPS Sustained Performance
  • ADSP-2100 Family Code Compatible, with Instruction Set Extensions
  • 80K Bytes of On-Chip RAM, Configured as 16K Words On-Chip Program Memory RAM and 16K Words On-Chip Data Memory RAM
  • Dual Purpose Program Memory for Both Instruction and Data Storage
  • 16-Bit Internal DMA Port for High Speed Access to On-Chip Memory
  • 4 MByte Memory Interface for Storage of Data Tables and Program Overlays
  • 8-Bit DMA to Byte Memory for Transparent Program and Data Memory Transfers

Product Details

The ADSP-2181 is a single-chip microcomputer optimized for digital signal processing (DSP) and other high speed numeric processing applications.

The ADSP-2181 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, extensive interrupt capabilities, and on-chip program and data memory.

The ADSP-2181 integrates 80K bytes of on-chip memory configured as 16K words (24-bit) of program RAM, and 16K words (16-bit) of data RAM. Power-down circuitry is also provided to meet the low power needs of battery operated portable equipment. The ADSP-2181 is available in 128-pin TQFP and 128- pin PQFP packages.

In addition, the ADSP-2181 supports new instructions, which include bit manipulations-bit set, bit clear, bit toggle, bit test- new ALU constants, new multiplication instruction (x squared), biased rounding, result free ALU operations, I/O memory transfers and global interrupt masking for increased flexibility. Fabricated in a high speed, double metal, low power, CMOS process, the ADSP-2181 operates with a 30 ns instruction cycle time. Every instruction can execute in a single processor cycle. The ADSP-2181's flexible architecture and comprehensive instruction set allow the processor to perform multiple operations in parallel. In one processor cycle the ADSP-2181 can:

  • Generate the next program address
  • Fetch the next instruction
  • Perform one or two data moves
  • Update one or two data address pointers
  • Perform a computational operation

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Evaluation Kits (1)


Application Notes (71)

Software & Systems Requirements

Tools & Simulations

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

Support & Discussions

adsp-2181 Discussions

RE: HFCLK for SPDIF Transmitter for ADSP-SC584
16 hour(s) ago in SC5xx/ADSP
RE: SPORT secondary data pin
17 hour(s) ago in ins
RE: EVAL-ADAU1466Z input data to file
4 day(s) ago in SigmaDSP Processors and SigmaStudio Development Tool

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