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Analog Devices Inc. ADSP-BF705KBCZ-4
- Part No.:
- ADSP-BF705KBCZ-4
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 184-LFBGA, CSPBGA
- Datasheet:
-
ADSP-BF705KBCZ-4.pdf
- Description:
- IC DSP LP 512KB L2SR 184BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,936
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Product details
Overview
ADSP-BF705KBCZ-4 from Analog Devices is a Blackfin+ embedded processor with 400 MHz core frequency, 136 kB parity-protected L1 SRAM (64 kB instruction + 64 kB data + 8 kB scratchpad), 512 kB ECC-protected L2 SRAM, dual CAN 2.0B interfaces, and USB 2.0 HS OTG - deployed in automotive infotainment and real-time motor control systems.
For engineers reviewing the ADSP-BF705KBCZ-4 datasheet, ADSP-BF705KBCZ-4 pinout, ADSP-BF705KBCZ-4 application, or ADSP-BF705KBCZ-4 equivalent, key selection criteria include L2 SRAM size, AEC-Q100 qualification, dual-CAN timing synchronization, USB 2.0 HS OTG host/device capability, and 184-ball CSP_BGA RoHS-compliant packaging.
Technical Context
The ADSP-BF705KBCZ-4 implements a dual-MAC Blackfin+ core supporting simultaneous 16-bit × 16-bit MACs or single 32-bit MAC per cycle, with 40-bit accumulators, branch prediction, and instruction set compatibility with prior Blackfin processors. It integrates a 64-bit L2 memory interface operating at SYSCLK frequency and supports DDR2/LPDDR via its dedicated DMC PHY.
Its memory architecture features hierarchical L1 (instruction/data/scratchpad) with multi-parity protection, unified L2 SRAM with ECC, and 512 kB on-chip ROM for secure boot. Peripherals include two 8-channel GP timers, two CAN controllers compliant with ISO 11898-1, and hardware crypto acceleration for AES-128/256 and SHA-256.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Blackfin+ dual-MAC 16/32-bit processor, instruction-set compatible with legacy Blackfin devices |
| Max Core Frequency | 400 MHz - enables real-time audio/video processing and deterministic motor control loops |
| L1 Memory | 136 kB total: 64 kB instruction SRAM, 64 kB data SRAM, 8 kB scratchpad - all with multi-parity-bit protection |
| L2 Memory | 512 kB ECC-protected SRAM + 512 kB ROM - supports secure boot and large algorithm buffers without external DRAM |
| Peripherals | Dual CAN 2.0B, USB 2.0 HS OTG, 2× UART, 2× SPORT, 1× PPI, 2× Quad SPI, 1× TWI, RTC, 8× GP timer |
| Package | 184-ball CSP_BGA, 12 mm × 12 mm × 0.8 mm pitch, RoHS compliant - optimized for automotive thermal and vibration requirements |
| Qualification | AEC-Q100 Grade 3 (−40°C to +85°C) - validated for under-hood and cabin automotive applications |
Pinout & Package
ADSP-BF705KBCZ-4 uses a 184-ball CSP_BGA package (12 mm × 12 mm, 0.8 mm pitch), RoHS compliant, with ball assignments defined in Analog Devices Document ADSP-BF70x Rev. D, Pages 105–107. The package supports DDR2/LPDDR interface via dedicated DMC pins and includes dedicated power/ground ball arrays for low-noise operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_INT | Core power supply | 1.05 V ± 3% supply for 400 MHz operation; requires low-ESR decoupling near package corners |
| VDD_IO | I/O power supply | 3.3 V or 1.8 V selectable; powers GPIO, CAN, UART, SPI, and USB PHY I/O banks independently |
| CLKIN | External clock input | Accepts 1–50 MHz crystal or CMOS clock; feeds PLL for generating 400 MHz SYSCLK and peripheral clocks |
| CAN0_TX / CAN0_RX | Controller Area Network channel 0 | Differential pair supporting ISO 11898-1 physical layer; integrated CAN protocol controller with message RAM and filtering |
| USB_DP / USB_DM | USB 2.0 HS differential pair | Full-speed (12 Mbps) and high-speed (480 Mbps) capable; internal PHY with suspend/resume and OTG session request support |
| DMC_DQ[15:0] | Dynamic memory data bus | 16-bit bidirectional DDR2/LPDDR data interface; supports 200 MHz data rate with on-die termination |
Key Features
| Feature | Design Value |
|---|---|
| Secure Boot with OTP Key Storage | 1 kB one-time-programmable memory stores unique chip ID and cryptographic keys for authenticated firmware loading |
| Hardware Crypto Engine | Accelerates AES-128/256 encryption/decryption and SHA-256 hashing - reduces CPU load by >90% vs. software-only implementation |
| Memory Protection Unit (MPU) | Enforces privilege-level access control across L1/L2 memory regions - isolates RTOS tasks and prevents unauthorized register access |
| Dual CAN with Time-Triggered Communication | Supports synchronized timestamping and message scheduling across both CAN channels - essential for distributed automotive ECU coordination |
| Low-Power Dynamic Voltage/Frequency Scaling | Adjusts VDD_INT and SYSCLK in real time; achieves <100 mW core domain power at 400 MHz (0.25 mW/MHz) at 25°C junction temperature |
Applications
| Automotive Infotainment Head Unit | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Real-time audio decoding, touchscreen GUI rendering, and Bluetooth/HFP stack execution in a vehicle head unit. IC Role / Device Role / Timing Role: Primary application processor managing multimedia subsystems, CAN-based vehicle network integration, and USB-hosted diagnostics. Use Value: 400 MHz Blackfin+ core delivers deterministic latency for audio buffer management; dual CAN enables seamless communication with instrument cluster and body control modules. |
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase BLDC motors in HVAC compressors or industrial pumps. IC Role / Device Role / Timing Role: Real-time motor control engine executing PWM generation, ADC sampling, and PID computation within ≤1 µs jitter. Use Value: Dual 16-bit MACs process FOC math in single cycle; 8-channel GP timers synchronize PWM edges and ADC triggers with sub-microsecond precision. |
| Medical Ultrasound Beamformer | Smart Grid Protection Relay |
Use Scenario: Digital beamforming and RF signal processing in portable ultrasound systems requiring low power and compact form factor. IC Role / Device Role / Timing Role: Signal processing node performing FIR filtering, envelope detection, and scan conversion before display output. Use Value: 136 kB L1 SRAM holds multiple channel sample buffers; hardware-accelerated complex MAC supports 16-bit IQ data correlation at real-time rates. |
Use Scenario: Fault detection, event logging, and communication with SCADA systems in medium-voltage distribution substations. IC Role / Device Role / Timing Role: Safety-critical protection processor executing IEC 61850 GOOSE messaging, harmonic analysis, and trip logic with AEC-Q100 reliability. Use Value: AEC-Q100 qualification ensures long-term stability in harsh electrical environments; dual CAN and USB OTG enable redundant communication and field firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-BF706KBCZ-4 | 1 MB L2 SRAM (vs. 512 kB), adds DDR2/LPDDR interface (L3), same core/peripherals/package | Suitable for applications requiring larger code/data footprint or external DRAM interfacing | Select ADSP-BF706KBCZ-4 only if L2 expansion or DDR2/LPDDR connectivity is required; otherwise ADSP-BF705KBCZ-4 offers optimal cost/performance balance |
| NXP i.MX RT1052CVL5B | ARM Cortex-M7 @ 600 MHz, 512 kB SRAM, no integrated CAN FD, USB HS OTG, no AEC-Q100 grade | Targets higher-throughput general-purpose RT applications; lacks automotive qualification and dual-CAN deterministic timing | Choose i.MX RT1052CVL5B for ARM ecosystem compatibility and higher clock speed; retain ADSP-BF705KBCZ-4 when AEC-Q100, dual CAN, or Blackfin DSP efficiency is mandatory |
Compared with ADSP-BF706KBCZ-4, ADSP-BF705KBCZ-4 trades 512 kB L2 capacity for lower BOM cost and identical automotive qualification; versus i.MX RT1052CVL5B, it provides guaranteed AEC-Q100 compliance, dual-CAN time synchronization, and hardware-accelerated DSP operations critical for real-time control.
Availability
ADSP-BF705KBCZ-4 is available at Aetrix Electronics and suitable for automotive infotainment, industrial motor control, medical ultrasound, and smart grid protection applications requiring stable component supply, long lifecycle support, and AEC-Q100 reliability.
Supply support for ADSP-BF705KBCZ-4 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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision, power, and connectivity applications.
The ADSP-BF705KBCZ-4 belongs to the Blackfin+ processor family, designed specifically for deterministic real-time embedded systems where signal processing, control, and connectivity converge - especially in automotive, industrial, and medical edge devices.
FAQ
What is the maximum operating temperature range for the ADSP-BF705KBCZ-4?
The ADSP-BF705KBCZ-4 is AEC-Q100 qualified for Grade 3 operation, supporting continuous operation from −40°C to +85°C ambient temperature. This rating applies to the full 400 MHz performance envelope and includes validation under thermal cycling, humidity, and vibration stress conditions typical of automotive cabin and under-hood environments.
Does the ADSP-BF705KBCZ-4 support secure boot with cryptographic verification?
Yes, the ADSP-BF705KBCZ-4 implements fast secure boot using its integrated crypto engine and 1 kB OTP memory. During reset, it verifies signed firmware images using RSA-2048 or ECDSA-256 signatures stored in L2 ROM or external flash, ensuring only authenticated code executes - a requirement for ISO 26262 ASIL-B compliant systems.
Can the ADSP-BF705KBCZ-4 interface directly with DDR2 or LPDDR memory?
No - the ADSP-BF705KBCZ-4 does not include a dynamic memory controller (DMC). Only ADSP-BF706/707 variants feature the L3 interface for DDR2/LPDDR. The ADSP-BF705KBCZ-4 relies on its 512 kB on-chip L2 SRAM and static memory controller (SMC) for NOR/NAND flash and SRAM expansion.
How many CAN interfaces does the ADSP-BF705KBCZ-4 provide, and what protocol versions are supported?
The ADSP-BF705KBCZ-4 integrates two independent CAN 2.0B controllers compliant with ISO 11898-1, supporting both standard (11-bit) and extended (29-bit) identifier frames, bit rates up to 1 Mbps, and configurable message RAM with hardware filtering - enabling synchronized multi-node communication in automotive networks.
Is the ADSP-BF705KBCZ-4 pin-compatible with other ADSP-BF70x family members in the same package?
Yes - all 184-ball CSP_BGA variants in the ADSP-BF70x family (BF700–BF707) share identical mechanical and electrical pinouts. This allows drop-in replacement across speed grades and memory configurations without PCB redesign, provided thermal and power delivery constraints are met for the selected variant.
ADSP-BF705KBCZ-4 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:
- 400MHz
- 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-4 FAQ
1.How can I place an order for ADSP-BF705KBCZ-4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-BF705KBCZ-4 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-4 reliable?
The price and inventory of ADSP-BF705KBCZ-4 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-4 is usually 5 days.
3.What payment methods are accepted for ADSP-BF705KBCZ-4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-BF705KBCZ-4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-BF705KBCZ-4?
ADSP-BF705KBCZ-4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-BF705KBCZ-4 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-4?
For technical support, including ADSP-BF705KBCZ-4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-BF705KBCZ-4 requirements.
6.How does Aetrix verify that ADSP-BF705KBCZ-4 is sourced from the original manufacturer or authorized distributors?
All ADSP-BF705KBCZ-4 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-4 meets industry standards.
7.What is the process for return or replacement of ADSP-BF705KBCZ-4?
All ADSP-BF705KBCZ-4 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-BF705KBCZ-4, 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-4 part is unused and in its original packaging.
Return procedure for ADSP-BF705KBCZ-4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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