ADSP-BF705BBCZ-4

Digital Signal Processor Dsp Overview

The ADSP-BF705BBCZ-4 is a single-core Blackfin+ embedded processor from Analog Devices, operating at a maximum frequency of 400 MHz. It integrates 1 MB of ECC-protected L2 SRAM and 136 kB of parity-protected L1 SRAM (64 kB instruction, 64 kB data, 8 kB scratchpad). The device features a 16-bit complex MAC, dual 16-bit or single 32-bit MAC support per cycle, and an on-chip 512 kB L2 ROM. It includes a 16-bit DDR2/LPDDR interface for external memory expansion up to 200 MHz. The component is housed in a 184-ball CSP_BGA package measuring 12 mm × 12 mm × 0.8 mm with a 0.8 mm pitch.

Digital Signal Processor Dsp Feature Summary

• Blackfin+ core delivering up to 400 MHz performance with <100 mW core domain power consumption.
• Integrated 1 MB ECC-protected L2 SRAM and 136 kB multi-parity-bit protected L1 SRAM.
• Supports 16-bit complex MAC, dual 16-bit MAC, and single 32-bit MAC operations per cycle.
• Includes hardware crypto accelerators, fast secure boot, and memDMA encryption/decryption.

Digital Signal Processor Dsp Applications

• Automotive systems
• Embedded industrial control
• Video and image analysis
• Biometric applications

Digital Signal Processor Dsp Procurement Notes

Verify the specific speed grade suffix (-4) corresponds to the required 400 MHz operational frequency against the manufacturer's ordering guide. Confirm that the 184-ball CSP_BGA package dimensions and pinout match the target PCB footprint. Ensure supply chain sources provide valid RoHS compliance documentation and automotive qualification records if AEC-Q100 standards are required for the application.

Digital Signal Processor Dsp Selection Notes

Select this model when 1 MB of on-chip L2 SRAM is necessary to minimize external memory dependencies. The 184-ball CSP_BGA package is required for access to the L3 interface supporting DDR2/LPDDR expansion. Verify that the system design accommodates the 12 mm × 12 mm package outline and the specific thermal requirements associated with the 400 MHz clock speed.

Digital Signal Processor Dsp Part Context

This component belongs to the ADSP-BF70x family, which shares the Blackfin+ architecture but varies in L2 SRAM capacity and peripheral configurations. The ADSP-BF705 specifically provides the 1 MB L2 SRAM variant within the 400 MHz speed bin. It maintains instruction set compatibility with previous Blackfin products while adding enhanced cache and branch prediction features.

Digital Signal Processor Dsp Replacement Considerations

Direct substitutes within the same package include other ADSP-BF70x models with identical 400 MHz speeds and 184-ball CSP_BGA packaging, such as the ADSP-BF706 or ADSP-BF707, provided their specific peripheral counts and L2 SRAM sizes meet the design requirements.