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ADSP-2185NBSTZ-320 Datasheet - ADI

Part Name
Description
MFG CO.
ADSP-2185NBSTZ-320
ADI
Analog Devices ADI
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GENERAL DESCRIPTION
The ADSP-218xN series consists of six single chip microcomputers optimized for digital signal processing applications. The high-level block diagram for the ADSP-218xN series members
appears on the previous page. All series members are pin-compatible and are 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.

PERFORMANCE FEATURES
    12.5 ns Instruction cycle time @1.8 V (internal), 80 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 200 CLKIN cycle     recovery from power-down condition
    Low power dissipation in idle mode

INTEGRATION FEATURES
    ADSP-2100 family code compatible (easy to use algebraic syntax), with instruction set extensions
    Up to 256K byte of on-chip RAM, configured Up to 48K words program memory RAM Up to 56K words data memory RAM
    Dual-purpose program memoryfor 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
    100-lead LQFP and 144-ball BGA

SYSTEM INTERFACE FEATURES
    Flexible I/O allows 1.8 V, 2.5 V or 3.3 V operation All inputs tolerate up to 3.6 V regardless of mode
    16-bit internal DMA port for high-speed access to on-chip memory (mode selectable)
    4M-byte memory interface for storage of data tables and program overlays (mode selectable)
    8-bit DMA to byte memory for transparent program and data memory transfers (mode selectable)
    Programmable memory strobe and separate I/O memory space permits “glueless” system design
    Programmable wait state generation
    Two double-buffered serial ports with companding hardware and automatic data buffering
    Automatic booting of on-chip program memory from byte wide external memory, for example, EPROM, or through internal DMA Port
    Six external interrupts
    13 programmable flag pins provide flexible system signaling
    UART emulation through software SPORT reconfiguration
    ICE-Port™ emulator interface supports debugging in final systems

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