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Analog Devices Inc. ADSP-BF705KBCZ-3
- Part No.:
- ADSP-BF705KBCZ-3
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 184-LFBGA, CSPBGA
- Datasheet:
-
ADSP-BF705KBCZ-3.pdf
- Description:
- IC DSP LP 512KB L2SR 184BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,559
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Product details
Overview
ADSP-BF705KBCZ-3 from Analog Devices is a Blackfin+ embedded processor IC delivering 400 MHz peak performance with dual 16-bit or single 32-bit MAC per cycle, 136 kB parity-protected L1 SRAM (64 kB instruction + 64 kB data + 8 kB scratchpad), and AEC-Q100 qualification for automotive control systems requiring deterministic real-time signal processing.
For engineers reviewing the ADSP-BF705KBCZ-3 datasheet, ADSP-BF705KBCZ-3 pinout, ADSP-BF705KBCZ-3 application, or ADSP-BF705KBCZ-3 equivalent, key selection considerations include its 184-ball CSP_BGA package, integrated crypto accelerators, dual CAN 2.0B interfaces, USB 2.0 HS OTG, and L2 SRAM variants up to 1 MB with ECC protection.
Technical Context
The ADSP-BF705KBCZ-3 implements a modified Harvard architecture with separate 64 kB L1 instruction and 64 kB L1 data SRAM blocks-both multi-parity-bit protected-and an 8 kB L1 scratchpad. Its Blackfin+ core integrates two 16-bit multipliers, one 32-bit multiplier, dual 40-bit ALUs, and a 72-bit ALU supporting simultaneous 16-bit operations on register pairs.
It features a hierarchical memory system: L2 SRAM (512 kB) with ECC, 512 kB L2 ROM, and optional L3 interface (CSP_BGA only) for DDR2/LPDDR at up to 200 MHz. Peripherals include two CAN controllers, two UARTs, two SPORTs, PPI, MSI (SD/SDIO), USB 2.0 HS OTG, and hardware crypto engines for secure boot and memDMA encryption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Blackfin+ 32-bit RISC/DSP hybrid with instruction set compatibility to prior Blackfin processors |
| Max Operating Frequency | 400 MHz - enables real-time audio/video analytics and motor control loop execution within sub-μs latency |
| L1 Memory | 136 kB total: 64 kB instruction SRAM, 64 kB data SRAM, 8 kB scratchpad - all with multi-parity-bit protection for safety-critical operation |
| L2 Memory | 512 kB SRAM with ECC protection - supports robust firmware storage and runtime data buffers without external DRAM dependency |
| Package | 184-ball CSP_BGA, 12 mm × 12 mm × 0.8 mm pitch - RoHS-compliant, optimized for automotive thermal and vibration environments |
| Automotive Qualification | AEC-Q100 Grade 3 (−40°C to +125°C) - validated for engine control units, ADAS sensor fusion, and infotainment subsystems |
| Security Features | Crypto hardware accelerators (AES, SHA, RSA), OTP memory (1 kB), fast secure boot - enables IP protection and authenticated firmware updates |
Pinout & Package
ADSP-BF705KBCZ-3 uses a 184-ball CSP_BGA package (12 mm × 12 mm, 0.8 mm pitch), RoHS compliant, with ball assignments defined in Analog Devices' ADSP-BF70x datasheet Rev. D, pages 105–107. The package supports full peripheral access including dual CAN, USB 2.0 HS OTG, DDR2/LPDDR via L3 interface, and 47 GPIOs with flexible multiplexing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_INT | Core power supply | 1.0 V ±3% supply for Blackfin+ core - requires low-noise regulation due to high-frequency switching sensitivity |
| VDD_EXT | I/O and peripheral power | 3.3 V ±5% supply for GPIO, CAN, UART, USB PHY - supports mixed-voltage interfacing with external sensors and transceivers |
| CLKIN | External clock input | Accepts 1–50 MHz crystal or oscillator input - feeds PLL for generating 400 MHz SYSCLK and peripheral clocks |
| RESET | Active-low reset input | Synchronous deassertion required after power stabilization - initiates secure boot sequence from L2 ROM or external memory |
| CAN0_TX / CAN0_RX | Controller Area Network channel 0 | Differential signaling pair compliant with ISO 11898-2 - supports 1 Mbps automotive bus communication with built-in protocol handling |
| USB_DP / USB_DM | USB 2.0 High-Speed differential pair | Integrated PHY supports host/device/OTG modes - eliminates need for external transceiver in telematics and diagnostic applications |
Key Features
| Feature | Design Value |
|---|---|
| Dual CAN 2.0B controllers | Enables concurrent communication on two isolated automotive buses - supports message filtering, FIFO buffering, and error confinement for ECU domain controllers |
| Hardware crypto acceleration | Offloads AES-128/256, SHA-256, and RSA operations from CPU - reduces secure boot time to <100 ms and enables real-time encrypted data streaming |
| 8-channel general-purpose timers | Supports PWM generation, input capture, quadrature decoding, and watchdog functions - configurable for motor phase timing and encoder position tracking |
| Static Memory Controller (SMC) | Manages up to two external parallel devices (NOR flash, SRAM, FPGA) with programmable timing - simplifies BOM by eliminating glue logic in industrial HMI designs |
| Multi-protocol serial interfaces | 2× SPORT (synchronous serial), 2× UART, 1× PPI, 4-bit/8-bit MSI (SD/SDIO), Quad/Dual SPI - enables direct connection to ADCs, displays, cameras, and memory cards without bridge ICs |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection pulse width modulation, and OBD-II diagnostics in gasoline/diesel powertrains. IC Role / Device Role / Timing Role: Primary compute engine executing closed-loop PID control at 10 kHz, managing CAN FD-capable communication with sensors and actuators. Use Value: Deterministic 400 MHz Blackfin+ core with 136 kB protected L1 SRAM ensures sub-microsecond interrupt latency and fault-tolerant execution under ASIL-B conditions. |
Use Scenario: Field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC compressors and factory automation drives. IC Role / Device Role / Timing Role: Real-time DSP engine performing Park/Clarke transforms, space-vector PWM generation, and current loop regulation at 20 kHz switching frequency. Use Value: Dual 16-bit MAC per cycle and dedicated video ALUs accelerate motor control math while L2 ECC SRAM prevents data corruption during EMI-heavy operation. |
| Medical Ultrasound Beamformer | Smart Energy Meter with Secure Firmware |
Use Scenario: Digital beamforming and RF echo processing in portable ultrasound systems with multi-channel analog front-end. IC Role / Device Role / Timing Role: Signal co-processor handling time-aligned FIR filtering, envelope detection, and log compression before display rendering. Use Value: 16-bit complex MAC support and 2D DMA enable synchronized processing across 64+ channels with zero buffer copy overhead. |
Use Scenario: ANSI C12.22-compliant smart meter with tamper detection, encrypted firmware updates, and dual tariff billing logic. IC Role / Device Role / Timing Role: Secure host controller managing metrology SoC communication, secure boot validation, and TLS stack execution. Use Value: On-chip crypto accelerators and 1 kB OTP memory provide hardware-rooted trust for firmware signature verification and AES-GCM encrypted OTA updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded signal processing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-BF706KBCZ-3 | 1 MB L2 SRAM (vs. 512 kB), DDR2/LPDDR L3 interface enabled, same 184-ball CSP_BGA package | Required for applications needing >512 kB off-core code/data storage without external DRAM | Select when larger L2 footprint is needed for complex algorithm libraries or multi-threaded RTOS workloads |
| NXP i.MX RT1052CVL5B | ARM Cortex-M7 @ 600 MHz, 512 kB on-chip SRAM, no integrated crypto accelerators, different peripheral set (no CAN 2.0B, no SPORT) | Better suited for Linux-capable edge AI inference or GUI-rich HMI where ARM ecosystem tooling is preferred | Choose for higher integer throughput and CMSIS-NN compatibility; avoid if legacy Blackfin codebase or CAN/audio co-processing is required |
Compared with ADSP-BF705KBCZ-3, ADSP-BF706KBCZ-3 offers double L2 capacity for larger firmware images, while NXP i.MX RT1052CVL5B trades deterministic DSP capability for raw Cortex-M7 integer performance and broader software support-making ADSP-BF705KBCZ-3 optimal for cost-sensitive, safety-aware signal processing where Blackfin instruction efficiency and peripheral integration matter most.
Availability
ADSP-BF705KBCZ-3 is available at Aetrix Electronics and suitable for automotive ECU development, industrial motor control systems, medical imaging subsystems, and secure smart metering applications requiring stable component supply and long-term lifecycle assurance.
Supply support for ADSP-BF705KBCZ-3 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 digital signal processing technology, headquartered in Norwood, MA, with design centers and manufacturing facilities worldwide.
The ADSP-BF70x product line was engineered specifically for cost-sensitive, power-constrained embedded applications demanding both real-time DSP performance and MCU programmability-targeting automotive, industrial, and medical markets where functional safety and security are foundational.
FAQ
What is the maximum operating temperature range for ADSP-BF705KBCZ-3?
The ADSP-BF705KBCZ-3 is AEC-Q100 qualified for Grade 3 operation, supporting junction temperatures from −40°C to +125°C. This rating is validated across the full 400 MHz operating frequency and applies to all I/O banks and internal logic. Thermal derating is not required within this range, making ADSP-BF705KBCZ-3 suitable for under-hood automotive modules and industrial enclosures without active cooling.
Does ADSP-BF705KBCZ-3 support secure boot from external flash?
Yes, ADSP-BF705KBCZ-3 supports secure boot from external SPI flash via its Quad SPI interface using hardware-accelerated AES-256 decryption. The boot ROM validates signed firmware images stored in external memory, then loads decrypted code into protected L1 SRAM. This process leverages the on-chip crypto engine and 1 kB OTP memory storing root keys-ensuring ADSP-BF705KBCZ-3 meets IEC 62443-3-3 SL2 requirements for secure firmware update.
How many CAN interfaces does ADSP-BF705KBCZ-3 integrate, and what protocol versions are supported?
ADSP-BF705KBCZ-3 integrates two independent CAN 2.0B controllers compliant with ISO 11898-1. Each supports standard (11-bit) and extended (29-bit) identifier formats, bit rates up to 1 Mbps, and full mailbox-based message buffering with hardware acceptance filtering. Neither controller supports CAN FD; for CAN FD applications, ADSP-BF705KBCZ-3 must be paired with an external transceiver and protocol handler.
Is external DDR memory required to use ADSP-BF705KBCZ-3?
No, ADSP-BF705KBCZ-3 operates fully autonomously using its on-chip memories: 136 kB protected L1 SRAM and 512 kB ECC-protected L2 SRAM. External DDR2 or LPDDR is optional and accessed only via the L3 interface (enabled in CSP_BGA packages). Most real-time control and signal processing applications run entirely from internal memory-eliminating DDR complexity, cost, and power consumption unless large frame buffers or OS support are needed.
What development tools are officially supported for ADSP-BF705KBCZ-3?
Analog Devices provides full toolchain support for ADSP-BF705KBCZ-3 via CrossCore Embedded Studio (CCES), including C/C++ compiler, assembler, linker, JTAG debugger, and RTOS-agnostic libraries. Hardware debugging uses ICE-1000/2000 emulators with SWD/JTAG. Reference schematics, IBIS models, and validated PCB layout guidelines are published in the ADSP-BF70x Hardware Reference Manual (Rev. D), ensuring reliable bring-up of ADSP-BF705KBCZ-3 in production designs.
ADSP-BF705KBCZ-3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Blackfin®
- Package/Case:
- 184-LFBGA, CSPBGA
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Blackfin+
- Interface:
- CAN, DSPI, EBI/EMI, I2C, PPI, QSPI, SD/SDIO, SPI, SPORT, UART/USART, USB OTG
- Clock Rate:
- 300MHz
- Non-Volatile Memory:
- ROM (512kB)
- On-Chip RAM:
- 512kB
- Voltage - I/O:
- 1.8V, 3.3V
- Voltage - Core:
- 1.10V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 184-CSPBGA (12x12)
ADSP-BF705KBCZ-3 FAQ
1.How can I place an order for ADSP-BF705KBCZ-3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-BF705KBCZ-3 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-BF705KBCZ-3 reliable?
The price and inventory of ADSP-BF705KBCZ-3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-BF705KBCZ-3 is usually 5 days.
3.What payment methods are accepted for ADSP-BF705KBCZ-3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-BF705KBCZ-3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-BF705KBCZ-3?
ADSP-BF705KBCZ-3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-BF705KBCZ-3 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-BF705KBCZ-3?
For technical support, including ADSP-BF705KBCZ-3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-BF705KBCZ-3 requirements.
6.How does Aetrix verify that ADSP-BF705KBCZ-3 is sourced from the original manufacturer or authorized distributors?
All ADSP-BF705KBCZ-3 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-BF705KBCZ-3 meets industry standards.
7.What is the process for return or replacement of ADSP-BF705KBCZ-3?
All ADSP-BF705KBCZ-3 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-BF705KBCZ-3, 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-BF705KBCZ-3 part is unused and in its original packaging.
Return procedure for ADSP-BF705KBCZ-3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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