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Analog Devices Inc. ADSP-2186KST-115
- Part No.:
- ADSP-2186KST-115
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP
- Datasheet:
-
ADSP-2186KST-115.pdf
- Description:
- IC DSP CONTROLLER 16BIT 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADSP-2186KST-115 from Analog Devices is a 40 MIPS fixed-point DSP microcomputer with 8K × 24-bit on-chip program RAM, 8K × 16-bit on-chip data RAM, and dual synchronous serial ports (SPORT0/SPORT1). It executes all instructions in a single 25 ns cycle, supports zero-overhead looping, and integrates power-down, idle, and slow-idle low-power modes for portable audio and telecom terminal applications.
For engineers reviewing the ADSP-2186KST-115 datasheet, ADSP-2186KST-115 pinout, ADSP-2186KST-115 application, or ADSP-2186KST-115 equivalent, key selection criteria include instruction-cycle timing, on-chip memory configuration, serial port framing flexibility, interrupt prioritization, and LQFP-100 package compatibility with ICE-Port™ emulation support.
Technical Context
The ADSP-2186KST-115 implements the ADSP-2100 base architecture with three independent computational units-ALU, MAC (40-bit accumulator), and barrel shifter-connected via an internal result (R) bus. Its dual DAGs enable simultaneous dual-operand fetches from program and data memory in every cycle.
It supports full-memory mode (14-bit address, 24-bit data) and host mode (16-bit IDMA port), with programmable wait states, byte DMA to 4 MB external memory, and I/O memory space with 2048 locations. Serial ports provide hardware companding per G.711, frameless/frame-synchronized operation, and multichannel TDM on SPORT0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Instruction Cycle Time | 25 ns - enables sustained 40 MIPS throughput with deterministic real-time execution |
| On-Chip Program Memory | 8K × 24-bit RAM - stores instructions and constants; dual-purpose for data overlay in full-memory mode |
| On-Chip Data Memory | 8K × 16-bit RAM - supports parallel load/store operations with DAG-based circular buffering |
| Serial Ports | 2 × bidirectional SPORTs - each with double-buffered TX/RX, programmable clock, and G.711 A-law/µ-law companding |
| Interrupt System | 11 total interrupts (6 external, 5 internal) - prioritized, individually maskable, with nested handling and 12-level hardware stack |
| Low-Power Modes | Power-down (200-cycle wake-up), Idle, Slow-Idle (IDLE(n) with n=16/32/64/128) - reduces active current without halting DMA or autobuffering |
| Timer | 16-bit programmable interval timer with 8-bit prescaler - generates periodic interrupts with reload from TPERIOD register |
Pinout & Package
The ADSP-2186KST-115 is packaged in a 100-lead LQFP (Lead Pitch: 0.5 mm, Body Size: 14 mm × 14 mm), with pin functions multiplexed between memory interface, serial I/O, flags, and emulation support. Pin configuration is determined at RESET (Mode C) for memory mode and software-configurable during runtime for SPORT and flag assignments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Asynchronous processor reset input | Asserted low to initialize registers, clear stacks, and configure memory mode via Mode C pin |
| CLKIN / XTAL | Clock source input | Accepts 25–50 MHz crystal or TTL/CMOS clock; drives internal PLL-free core timing |
| A13:A0 (Full Mode) | External address bus outputs | Drives 14-bit address for program/data/byte/I/O spaces; shared with D23:D0 in multiplexed bus mode |
| D23:D0 (Full Mode) | External data/address bidirectional bus | Carries 24-bit data or upper 8 bits of byte memory address; requires external latch control |
| SCLK0, RFS0, DT0, DR0, TFS0 | SPORT0 serial interface pins | Support frame-synced or frameless operation; SCLK0 may be generated internally or externally |
| SCLK1, RFS1/IRQ0, TFS1/IRQ1, DT1/FO, DR1/FI | SPORT1 serial + interrupt/flag pins | Configurable as serial port or dual IRQ + FI/FO; retains both functions concurrently per IMASK setting |
| PWD / PWDACK | Power-down control interface | PWD input initiates hardware power-down; PWDACK output confirms entry into low-power state |
| EZ-Port (9-pin) | ICE-Port™ emulation interface | Enables in-circuit debugging without target board modification; supports breakpoint, register, and memory access |
Key Features
| Feature | Design Value |
|---|---|
| Three-bus Harvard architecture | Enables concurrent instruction fetch, operand load, and result store - eliminates pipeline stalls in loop-intensive DSP kernels |
| Zero-overhead looping | Hardware loop counters and stack eliminate branch overhead, enabling tight FIR/IIR filter loops without performance penalty |
| Byte DMA controller | Transfers data between on-chip RAM and 4 MB external byte memory without CPU intervention - ideal for program overlays and coefficient tables |
| Programmable flag I/O (13 pins) | Eight flags configurable as input/output, three dedicated outputs, plus SPORT1 pins repurposable as IRQ0/IRQ1/FI/FO - simplifies system signaling |
| UART emulation via SPORT | Software-reconfigurable SPORTs emulate UART framing and baud rate generation - avoids need for external UART IC in cost-sensitive designs |
| ICE-Port™ on-chip debug support | 14-pin EZ-Port interface enables full-speed in-target debugging, register/memory inspection, and C-source-level trace - accelerates firmware validation |
Applications
| Voice Terminal Systems | Industrial Motor Control |
|---|---|
|
Use Scenario: Real-time voice encoding/decoding and echo cancellation in VoIP gateways and IP phones. IC Role / Device Role / Timing Role: Primary DSP executing G.711 companding, adaptive filtering, and packetization with deterministic 25 ns instruction latency. Use Value: Dual SPORTs handle simultaneous full-duplex audio streams; on-chip RAM eliminates external SRAM, reducing BOM count and PCB area. |
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase AC induction motors in HVAC and pump drives. IC Role / Device Role / Timing Role: Real-time execution of Park/Clarke transforms, PI regulators, and SVM modulation at ≤10 µs control loop intervals. Use Value: 40 MIPS throughput and zero-overhead loops ensure sub-microsecond jitter in PWM timing; flag pins directly interface with gate drivers and fault sensors. |
| Portable Audio Processors | Medical Signal Analyzers |
|
Use Scenario: Battery-powered hearing aids and digital stethoscopes requiring ultra-low-power signal conditioning and noise suppression. IC Role / Device Role / Timing Role: Low-power DSP performing adaptive noise reduction and spectral shaping using slow-idle mode with n=128 divisor. Use Value: Power-down mode draws <100 µA standby current; 200-cycle wake-up ensures responsive button-triggered processing without perceptible latency. |
Use Scenario: Portable ECG/EEG analyzers capturing and analyzing biopotential waveforms with high SNR and real-time artifact rejection. IC Role / Device Role / Timing Role: Dedicated signal processor running QRS detection, ST-segment analysis, and FFT-based spectral diagnostics. Use Value: 8K × 16-bit data RAM buffers multiple seconds of 1 kS/s sampled data; MAC unit computes 256-point FFT in <500 µs with 40-bit accumulation precision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-point DSP microcomputer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-2189MST-133 | Higher clock speed (75 MHz), same LQFP-100 package, identical instruction set and memory map | Delivers 60 MIPS - suitable where higher filter order or multi-channel processing is required without code porting | Select when >40 MIPS throughput is needed; pin-compatible but requires updated clock circuit and thermal management |
| TMS320C549PGE | 16-bit fixed-point DSP with 100 MIPS, different architecture (VLIW), no on-chip program RAM, requires external ROM boot | Targets high-throughput telecom infrastructure; lacks integrated serial companding and ICE-Port™ debug | Choose for legacy C54x toolchain compatibility or higher raw MIPS; expect non-trivial firmware migration and added boot memory BOM |
Compared with ADSP-2186KST-115, the ADSP-2189MST-133 offers immediate performance uplift within identical hardware footprint, while the TMS320C549PGE demands architectural rework but delivers greater peak compute for scalable infrastructure designs.
Availability
ADSP-2186KST-115 is available at Aetrix Electronics and suitable for voice terminal systems, industrial motor controllers, portable audio processors, and medical signal analyzers requiring stable component supply across extended production lifecycles.
Supply support for ADSP-2186KST-115 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, Inc. is a global leader in high-performance analog, mixed-signal, and DSP technology, headquartered in Norwood, MA, with design centers and manufacturing facilities worldwide.
The ADSP-2186KST-115 belongs to the ADSP-2100 family of single-chip DSP microcomputers engineered for real-time signal processing in resource-constrained embedded systems where deterministic latency, low power, and integrated peripherals are critical.
FAQ
What is the maximum operating frequency supported by the ADSP-2186KST-115?
The ADSP-2186KST-115 operates with a 25 ns instruction cycle time, corresponding to a maximum clock input frequency of 40 MHz. It achieves sustained 40 MIPS performance with single-cycle instruction execution, and its internal architecture does not require frequency multiplication - CLKIN is used directly as the core clock source without PLL.
Does the ADSP-2186KST-115 support in-circuit debugging, and what interface is used?
Yes, the ADSP-2186KST-115 integrates on-chip emulation support via the ICE-Port™ interface, implemented as a 9-pin EZ-Port connector. This allows full-speed in-target debugging including breakpoints, register and memory inspection, and C-source-level trace without removing the device from the target board or adding adapters.
How is memory configured on the ADSP-2186KST-115, and can program memory store data?
The ADSP-2186KST-115 contains 8K × 24-bit on-chip program RAM and 8K × 16-bit on-chip data RAM. Program memory is dual-purpose: it stores both executable instructions and constant data, enabling efficient dual-operand fetches (one from program memory, one from data memory) in a single cycle - a key feature of its Harvard architecture.
What serial communication protocols does the ADSP-2186KST-115 natively support?
The ADSP-2186KST-115 features two fully independent synchronous serial ports (SPORT0 and SPORT1) supporting frame-synchronized and frameless operation, programmable word length (3–16 bits), and hardware A-law/µ-law companding per CCITT G.711. It does not include native UART, CAN, SPI, or I²C peripherals - those require software emulation or external transceivers.
What package type and pin count does the ADSP-2186KST-115 use?
The ADSP-2186KST-115 is supplied in a 100-lead LQFP package (14 mm × 14 mm, 0.5 mm pitch), with pin functions multiplexed across memory interface, serial I/O, programmable flags, and ICE-Port™ signals. The "KST" suffix explicitly denotes this LQFP-100 variant, distinguishing it from the 144-ball Mini-BGA version.
ADSP-2186KST-115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADSP-21xx
- Package/Case:
- 100-LQFP
- Packaging:
- Bag
- Product Status:
- Obsolete
- Type:
- Fixed Point
- Interface:
- Host Interface, Serial Port
- Clock Rate:
- 28.8MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 40kB
- Voltage - I/O:
- 5.00V
- Voltage - Core:
- 5.00V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP (14x14)
ADSP-2186KST-115 FAQ
1.How can I place an order for ADSP-2186KST-115 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2186KST-115 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADSP-2186KST-115 reliable?
The price and inventory of ADSP-2186KST-115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-2186KST-115 is usually 5 days.
3.What payment methods are accepted for ADSP-2186KST-115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2186KST-115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2186KST-115?
ADSP-2186KST-115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2186KST-115 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADSP-2186KST-115?
For technical support, including ADSP-2186KST-115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2186KST-115 requirements.
6.How does Aetrix verify that ADSP-2186KST-115 is sourced from the original manufacturer or authorized distributors?
All ADSP-2186KST-115 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADSP-2186KST-115 meets industry standards.
7.What is the process for return or replacement of ADSP-2186KST-115?
All ADSP-2186KST-115 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2186KST-115, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADSP-2186KST-115 part is unused and in its original packaging.
Return procedure for ADSP-2186KST-115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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