Analog Devices Inc. ADSP-2186MKCAZ-300

Overview

ADSP-2186MKCAZ-300 from Analog Devices is a 75 MIPS fixed-point DSP microcomputer with 8K × 24-bit on-chip program RAM, 8K × 16-bit data RAM, and dual synchronous serial ports (SPORT0/SPORT1). It executes all instructions in a single 13.3 ns cycle and supports full memory mode or host mode via Mode C pin configuration. Used in real-time audio processing, telecom channel banks, and industrial control systems requiring deterministic low-latency signal flow.

For engineers reviewing the ADSP-2186MKCAZ-300 datasheet, ADSP-2186MKCAZ-300 pinout, ADSP-2186MKCAZ-300 application, or ADSP-2186MKCAZ-300 equivalent, key selection criteria include its 100-lead LQFP package, 2.5 V core supply with 3.3 V I/O tolerance, dual DMA interfaces (IDMA and BDMA), zero-overhead looping capability, and ICE-Port™ debug support for in-system emulation.

Technical Context

The ADSP-2186MKCAZ-300 implements the ADSP-2100 base architecture with three independent computational units: ALU, 40-bit MAC, and barrel shifter-each connected via the internal R bus for inter-unit operand forwarding. Its program sequencer enables conditional jumps, subroutine calls, and zero-overhead loops using dedicated loop counters and stacks.

Two data address generators (DAG1/DAG2) support simultaneous dual-operand fetches with modulo addressing for circular buffers. Memory architecture separates 24-bit program space and 16-bit data space, both accessible in a single cycle; program memory may store data for dual-fetch operations. The device supports full memory mode (14-bit address bus, 24-bit data bus) or host mode (16-bit multiplexed IDMA port) selected at reset via Mode C.

Key Specifications

Pinout & Package

ADSP-2186MKCAZ-300 is housed in a 100-lead LQFP (ST-100) package with 0.5 mm pitch, thermally enhanced for industrial ambient operation. Pin functions are mode-dependent: Full Memory Mode uses A13:0 and D23:0 for external memory access; Host Mode repurposes pins for IAD15:0, IWR, IRD, IAL, IS, and IACK signals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-point DSP applications.

Compared with ADSP-2186MKCAZ-300, ADSP-2189MKCAZ-300 offers verified timing headroom at same package and code base, while TMS320C549PGE demands complete architectural rework but delivers higher peak throughput in optimized implementations.

Availability

ADSP-2186MKCAZ-300 is available at Aetrix Electronics and suitable for voice channel processing, industrial motor control, and telecom line card applications requiring stable component supply and long-term industrial lifecycle support.

Supply support for ADSP-2186MKCAZ-300 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and DSP technology, serving industrial, automotive, communications, and consumer markets since 1965.

The ADSP-2186MKCAZ-300 belongs to the ADSP-2100 family-a line of single-chip fixed-point DSP microcomputers designed for real-time signal processing in cost-sensitive, power-constrained embedded systems.

FAQ

What is the maximum operating frequency of the ADSP-2186MKCAZ-300?

The ADSP-2186MKCAZ-300 operates at a 13.3 ns instruction cycle time, delivering 75 MIPS sustained performance. Its maximum clock input (CLKIN) is 50 MHz, and it achieves this throughput without pipeline stalls due to its three-bus architecture and single-cycle instruction execution. The ADSP-2186MKCAZ-300 does not specify a higher-frequency grade beyond this rating.

Does the ADSP-2186MKCAZ-300 support external memory expansion?

Yes, the ADSP-2186MKCAZ-300 supports external memory expansion in Full Memory Mode via its 14-bit address bus (A13:0) and 24-bit data bus (D23:0), enabling up to 16 MB address space. It also integrates a Byte DMA controller for transparent access to up to 4 MB of external byte-wide memory (e.g., EPROM or SRAM) for program overlays and data tables.

How does the ADSP-2186MKCAZ-300 handle power management in battery-powered systems?

The ADSP-2186MKCAZ-300 features three low-power states: Power-Down (200-cycle wake-up), Idle, and Slow Idle. In Power-Down mode, core clocks halt while register and memory contents are retained; recovery is triggered by RESET or external interrupt. This enables multi-day battery life in portable voice recorders and handheld analyzers where the ADSP-2186MKCAZ-300 remains dormant between signal bursts.

Can the ADSP-2186MKCAZ-300 boot directly from external memory?

Yes, the ADSP-2186MKCAZ-300 supports automatic booting from byte-wide external memory (e.g., EPROM) via its Byte DMA port. During reset, it loads the first 8K words of program memory from external byte space. Alternatively, boot code can be loaded through the Internal DMA (IDMA) port in Host Mode, allowing flexible initialization from host processors or flash controllers.

Is the ADSP-2186MKCAZ-300 pin-compatible with other ADSP-2100 family members?

The ADSP-2186MKCAZ-300 shares the same 100-lead LQFP package and core pinout as ADSP-2181/2185/2189 variants, but differs in peripheral mapping: SPORT1 pin multiplexing, IDMA/BDMA signal allocation, and memory mode control depend on Mode C and Mode D settings. While mechanical fit is identical, firmware and board-level signal routing must be validated per variant's datasheet.