GENERAL DESCRIPTION

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

FEATURES

PERFORMANCE

25 ns Instruction Cycle Time from 20 MHz Crystal @ 5.0 Volts

40 MIPS Sustained Performance

Single-Cycle Instruction Execution

Single-Cycle Context Switch

3-Bus Architecture Allows Dual Operand Fetches in Every Instruction Cycle

Multifunction Instructions

Power-Down Mode Featuring Low CMOS Standby

Power Dissipation with 100 Cycle Recovery from Power-Down Condition

Low Power Dissipation in Idle Mode

INTEGRATION

ADSP-2100 Family Code Compatible, with Instruction Set Extensions

80K Bytes of On-Chip RAM, Configured as

16K Words On-Chip Program Memory RAM

16K Words On-Chip Data Memory RAM

Dual Purpose Program Memory for Both Instruction and Data Storage

Independent ALU, Multiplier/Accumulator, and Barrel Shifter Computational Units

Two Independent Data Address Generators

Powerful Program Sequencer Provides

Zero Overhead Looping

Conditional Instruction Execution

Programmable 16-Bit Interval Timer with Prescaler

128-Lead TQFP/128-Lead PQFP