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Analog Devices Inc. ADSP-BF705BBCZ-3
- Part No.:
- ADSP-BF705BBCZ-3
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 184-LFBGA, CSPBGA
- Datasheet:
-
ADSP-BF705BBCZ-3.pdf
- Description:
- IC DSP LP 512KB L2SR 184BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,743
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Product details
Overview
ADSP-BF705BBCZ-3 from Analog Devices is a Blackfin+ embedded processor with 400 MHz core performance, 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), 512 kB ECC-protected L2 SRAM, and AEC-Q100 qualification for automotive control systems.
For engineers reviewing the ADSP-BF705BBCZ-3 datasheet, ADSP-BF705BBCZ-3 pinout, ADSP-BF705BBCZ-3 application, or ADSP-BF705BBCZ-3 equivalent, this page delivers verified core architecture details, memory hierarchy mapping, peripheral integration (2× CAN, USB 2.0 HS OTG, 2× UART, 2× SPORT), security features (crypto engine, OTP, secure boot), and automotive-grade power/thermal behavior at 400 MHz.
Technical Context
The ADSP-BF705BBCZ-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 executes two 16×16 MACs or one 32×32 MAC per cycle, supports 16-bit complex MAC, branch prediction, and maintains full instruction-set compatibility with prior Blackfin processors.
It integrates a 512 kB ECC-protected L2 SRAM, 512 kB L2 ROM, hardware crypto accelerators, memDMA encryption/decryption, and a dynamic memory controller supporting DDR2/LPDDR (CSP_BGA only). The 184-ball CSP_BGA package enables L3 interface to external DRAM while maintaining <100 mW core domain power at 400 MHz and 25°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Blackfin+ dual-MAC DSP/microcontroller hybrid, 400 MHz max operation |
| L1 Memory | 136 kB total: 64 kB instruction SRAM + 64 kB data SRAM + 8 kB scratchpad, all multi-parity-bit protected |
| L2 Memory | 512 kB ECC-protected SRAM + 512 kB ROM; supports DMA memory protection |
| DMA Capability | 3 MDMA channels + 1 stream DMA; supports descriptor-based chaining, 1D/2D transfers, fractional buffer interrupts |
| Peripherals | 2× CAN 2.0B, USB 2.0 HS OTG, 2× UART, 2× SPORT, 1× PPI, 1× RTC, 8× GP timers, 2× Quad SPI, 1× Dual SPI |
| Security | Crypto hardware accelerators, 1 kB OTP memory, fast secure boot, memDMA encryption/decryption |
| Qualification | AEC-Q100 Grade 2 (−40°C to +105°C ambient), RoHS-compliant 184-ball CSP_BGA (12 mm × 12 mm, 0.8 mm pitch) |
Pinout & Package
ADSP-BF705BBCZ-3 uses a 184-ball CSP_BGA package (12 mm × 12 mm, 0.8 mm pitch), RoHS compliant. Ball assignments support multiplexed GPIO, memory interfaces (DDR2/LPDDR via L3), and high-speed peripherals including USB 2.0 HS OTG and dual CAN transceivers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_INT | Core power supply | 1.05 V ±3% supply for 400 MHz operation; requires low-noise regulation |
| VDD_EXT | I/O and peripheral power | 3.3 V or 1.8 V selectable; powers USB PHY, CAN transceivers, and GPIO |
| CLKIN | External clock input | Accepts 1–50 MHz crystal or CMOS clock; feeds PLL for SYSCLK generation |
| RESET | Active-low reset input | Synchronous deassertion required; initiates secure boot sequence from L2 ROM or external memory |
| USB_DP / USB_DM | USB 2.0 HS differential pair | Integrated PHY supports host/device/OTG modes; requires 90 Ω differential impedance routing |
| CAN0H / CAN0L | Channel 0 CAN bus interface | Direct connection to external CAN transceiver; supports ISO 11898-2 signaling up to 1 Mbps |
| MDMA0_D0–D15 | Memory DMA data bus | 16-bit bidirectional interface to external DDR2/LPDDR via L3 controller; timing-critical for 200 MHz operation |
Key Features
| Feature | Design Value |
|---|---|
| Blackfin+ Core Performance | 400 MHz operation with dual 16-bit MAC or single 32-bit MAC per cycle-enables real-time motor control and audio processing without external co-processors |
| L1 Memory Protection | Multi-parity-bit protection across 136 kB L1 SRAM ensures deterministic fault detection in safety-critical automotive applications |
| Secure Boot & Runtime Security | OTP-stored keys + crypto accelerators + memDMA encryption enable authenticated firmware loading and runtime data confidentiality |
| Automotive Interface Integration | 2× CAN 2.0B controllers, USB 2.0 HS OTG, and AEC-Q100 qualification allow direct use in body control modules and ADAS sensor hubs |
| Low-Power Memory Hierarchy | 512 kB ECC-protected L2 SRAM + L3 DDR2/LPDDR interface reduces off-chip memory access latency and system power vs. external SDRAM solutions |
Applications
| Automotive Body Control Module | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Centralized vehicle body electronics managing door locks, lighting, HVAC, and window lift functions with CAN network coordination. IC Role / Device Role / Timing Role: Main application processor executing real-time control logic, CAN message filtering/routing, and secure firmware updates. Use Value: Integrated 2× CAN controllers and AEC-Q100 qualification eliminate need for external CAN transceivers and safety certification overhead. |
Use Scenario: Closed-loop servo control of BLDC/PMSM motors in factory automation, requiring precise PWM timing, current sensing, and field-oriented control (FOC). IC Role / Device Role / Timing Role: Real-time signal processor executing FOC algorithms at 20 kHz loop rate using dual 16-bit MAC units and 8× GP timers for PWM synchronization. Use Value: 400 MHz Blackfin+ core with 136 kB L1 SRAM enables sub-1 μs interrupt latency and deterministic execution of motor control kernels. |
| Medical Imaging Sensor Hub | Smart Audio Endpoint |
Use Scenario: Aggregation and preprocessing of multi-channel analog sensor data (ECG, SpO₂, temperature) in portable diagnostic devices before transmission to host MCU. IC Role / Device Role / Timing Role: Dedicated signal acquisition processor handling ADC interfacing, digital filtering, and encrypted data packaging via memDMA. Use Value: Hardware crypto accelerators and OTP memory ensure HIPAA-compliant data confidentiality without software overhead. |
Use Scenario: Voice-enabled edge device performing acoustic echo cancellation, beamforming, and keyword spotting on 4–8 microphone inputs. IC Role / Device Role / Timing Role: Low-latency audio processor using 2× SPORT interfaces for I²S/TDM streaming and 16-bit complex MAC for real-time FIR filtering. Use Value: Dual 16-bit MAC per cycle and 64 kB L1 data SRAM support 24-bit/96 kHz audio processing with <5 ms end-to-end latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-BF706BBCZ-3 | 1 MB L2 SRAM (vs. 512 kB), adds DDR2/LPDDR L3 interface support | Required for applications needing >512 kB on-chip working memory or external DRAM bandwidth | Select ADSP-BF706BBCZ-3 only if L2 memory expansion or external DRAM interface is mandatory; otherwise ADSP-BF705BBCZ-3 offers optimal cost/performance balance |
| ADSP-BF704BBCZ-3 | 256 kB L2 SRAM (vs. 512 kB), no DDR2/LPDDR support, same 400 MHz core and peripherals | Suitable for cost-sensitive designs with smaller firmware footprint and no external DRAM requirement | Choose ADSP-BF704BBCZ-3 when application code/data fits within 256 kB L2 SRAM and L3 interface is unused; retains identical pinout and software compatibility |
Compared with ADSP-BF705BBCZ-3, ADSP-BF706BBCZ-3 provides double L2 SRAM and DRAM interface capability for memory-intensive tasks, while ADSP-BF704BBCZ-3 reduces L2 capacity by half for budget-constrained deployments-both maintain identical core performance, peripheral set, and software ecosystem.
Availability
ADSP-BF705BBCZ-3 is available at Aetrix Electronics and suitable for automotive body control modules, industrial motor drives, medical sensor hubs, and smart audio endpoints requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 compliance.
Supply support for ADSP-BF705BBCZ-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 semiconductors, headquartered in Norwood, MA, with design centers worldwide and a legacy of innovation in precision signal chains.
The ADSP-BF70x product line delivers scalable Blackfin+ embedded processors optimized for real-time signal processing in automotive, industrial, and medical applications-combining DSP acceleration, MCU programmability, and hardware security in a single die.
FAQ
What is the maximum operating frequency of the ADSP-BF705BBCZ-3?
The ADSP-BF705BBCZ-3 operates at a maximum core frequency of 400 MHz, validated under AEC-Q100 Grade 2 conditions (−40°C to +105°C ambient). This speed grade is achieved with 1.05 V ±3% VDD_INT supply and proper thermal management. All timing specifications-including memory access, peripheral handshake, and interrupt latency-are guaranteed at this frequency per the Rev. D datasheet.
Does the ADSP-BF705BBCZ-3 support external DDR2 or LPDDR memory?
Yes, the ADSP-BF705BBCZ-3 supports external DDR2 and LPDDR SDRAM via its L3 interface-but only in the 184-ball CSP_BGA package variant. This interface operates at up to 200 MHz with a 16-bit data bus and includes on-die termination for signal integrity. The 88-lead LFCSP package does not implement the L3 controller; ADSP-BF705BBCZ-3 specifically uses the CSP_BGA form factor.
How is security implemented in the ADSP-BF705BBCZ-3?
The ADSP-BF705BBCZ-3 integrates multiple hardware security layers: a 1 kB one-time-programmable (OTP) memory for key storage, dedicated crypto accelerators for AES/SHA/RSA operations, memDMA-based encryption/decryption for runtime data protection, and fast secure boot that verifies firmware authenticity before execution. These features are enabled without software overhead and meet automotive functional safety requirements.
What peripheral interfaces are included in the ADSP-BF705BBCZ-3?
The ADSP-BF705BBCZ-3 integrates 2× CAN 2.0B controllers, USB 2.0 HS OTG (with integrated PHY), 2× UART, 2× SPORT (for I²S/TDM), 1× PPI (parallel peripheral interface), 1× RTC, 8× general-purpose timers, 2× Quad SPI, 1× Dual SPI, 1× TWI (I²C), and a static memory controller. All are accessible via the 184-ball CSP_BGA package with configurable GPIO multiplexing.
Is the ADSP-BF705BBCZ-3 pin-compatible with other ADSP-BF70x variants?
Yes, the ADSP-BF705BBCZ-3 shares identical 184-ball CSP_BGA pinout and footprint with ADSP-BF706BBCZ-3 and ADSP-BF707BBCZ-3. This allows hardware reuse across speed/memory variants. However, it is not pin-compatible with the 88-lead LFCSP variants (e.g., ADSP-BF705BCPZ-3), which use different ball/pad layouts and lack L3 interface signals.
ADSP-BF705BBCZ-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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 184-CSPBGA (12x12)
ADSP-BF705BBCZ-3 FAQ
1.How can I place an order for ADSP-BF705BBCZ-3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-BF705BBCZ-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-BF705BBCZ-3 reliable?
The price and inventory of ADSP-BF705BBCZ-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-BF705BBCZ-3 is usually 5 days.
3.What payment methods are accepted for ADSP-BF705BBCZ-3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-BF705BBCZ-3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-BF705BBCZ-3?
ADSP-BF705BBCZ-3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-BF705BBCZ-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-BF705BBCZ-3?
For technical support, including ADSP-BF705BBCZ-3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-BF705BBCZ-3 requirements.
6.How does Aetrix verify that ADSP-BF705BBCZ-3 is sourced from the original manufacturer or authorized distributors?
All ADSP-BF705BBCZ-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-BF705BBCZ-3 meets industry standards.
7.What is the process for return or replacement of ADSP-BF705BBCZ-3?
All ADSP-BF705BBCZ-3 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-BF705BBCZ-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-BF705BBCZ-3 part is unused and in its original packaging.
Return procedure for ADSP-BF705BBCZ-3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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