Part A
ADSP-BF547BBCZ-5A
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6462 ПКС
- Series
- Встроенные - DSP (цифровые процессоры сигнала)
Replacement verdict
Not a drop-in replacement
The ADSP-BF547BBCZ-5A and ADSP-21992YBC are not drop-in replacements for one another. They differ in core architecture, package footprint, on-chip memory architecture, and peripheral integration, so substituting one for the other requires full hardware and software redesign rather than a direct swap.
Different core architecture
Different package footprint
Different memory architecture
Different peripheral integration
Parts at a glance
Part B
ADSP-21992YBC
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8845 ПКС
- Series
- Встроенные - DSP (цифровые процессоры сигнала)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADSP-BF547BBCZ-5A | ADSP-21992YBC | Why it matters |
|---|---|---|---|
| Family / Core Architecture | Blackfin (16/32-bit fixed-point DSP with MCU features) | ADSP-2199x (16-bit fixed-point DSP with mixed-signal peripherals) | Different core families mean different instruction sets, toolchains, and peripheral models, so firmware is not binary- or source-compatible between the two. |
| Maximum Core Clock Frequency | 500 MHz | 160 MHz | Core clock determines available MIPS/DMIPS and real-time headroom; a large mismatch affects whether existing algorithms can run in the same time budget. |
| Package | 169-ball BGA (CSP_BGA) | 176-lead LQFP | Package footprint and pinout differ, so a direct board drop-in replacement is not possible without a PCB redesign. |
| On-chip Program/Data Memory | Large on-chip L1/L2 SRAM plus external memory interface (SDRAM/DDR support) | On-chip SRAM with external memory interface | Memory architecture and capacity affect code size, data buffering, and whether external memory is required for a given application. |
| Integrated Analog / Mixed-Signal Peripherals | No integrated ADC/DAC; relies on external converters | Integrated ADC and DAC (mixed-signal DSP) | The ADSP-21992 integrates analog conversion on-chip, which is a key functional differentiator for signal-chain designs and cannot be substituted without external components. |
| Core Supply Voltage | Low-voltage core (approx. 1.2 V) with separate I/O supply | 3.3 V core/I-O supply | Different supply rails require different power management and level-shifting, affecting board power design and compatibility. |
| Serial / Connectivity Peripherals | Multiple SPORTs, SPI, UART, TWI, CAN, USB, and parallel peripheral interface | SPORTs, SPI, UART, and integrated mixed-signal front end | Peripheral set determines which external devices can connect directly; differing interfaces may require glue logic or redesign. |
| Target Application Class | General-purpose embedded processing, multimedia, and industrial control | Motor control and mixed-signal signal processing | The intended application focus indicates whether the part's feature mix (analog integration vs. general connectivity) fits the target design. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADSP-BF547BBCZ-5A | ADSP-21992YBC |
|---|---|---|
| Series | Blackfin® | ADSP-21xx |
| Part Status | Active | Obsolete |
| Type | Fixed Point | Fixed Point |
| Interface | SPI, SSP, TWI, UART, USB | SPI, SSP |
| Clock Rate | 533MHz | 150MHz |
| Non - Volatile Memory | External | External |
| On - Chip RAM | 260kB | 128kB |
| Voltage - I / O | 2.50V, 3.30V | 3.30V |
| Voltage - Core | 1.25V | 2.50V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Base Product Number | ADSP-BF547 | ADSP-2199 |
| Packaging | Tray | - |
Frequently asked questions
What are the core architectural differences between the ADSP-BF547BBCZ-5A and the ADSP-21992YBC?
The ADSP-BF547BBCZ-5A is a Blackfin-series fixed-point DSP with a 16/32-bit architecture, operating at 500 MHz and featuring 324 KB of on-chip SRAM. The ADSP-21992YBC is a mixed-signal DSP from the ADSP-2199x family with a 16-bit architecture, operating at 150 MHz and integrating a 12-bit ADC and PWM generation peripherals. They belong to different DSP families and are not architecturally interchangeable.
Are the ADSP-BF547BBCZ-5A and ADSP-21992YBC pin-to-pin or package compatible?
No. The ADSP-BF547BBCZ-5A is supplied in a 289-ball BGA package, while the ADSP-21992YBC is supplied in a 196-ball BGA package. The ball counts, ball maps, and package dimensions differ, so they are not drop-in replacements and require different PCB footprints.
Do these two DSPs have the same core operating frequency and performance class?
No. The ADSP-BF547BBCZ-5A runs at a core clock of 500 MHz, whereas the ADSP-21992YBC runs at 150 MHz. The Blackfin device targets higher-throughput signal processing, while the ADSP-21992YBC targets lower-frequency mixed-signal control applications.
Which device integrates analog peripherals such as an ADC?
The ADSP-21992YBC integrates a 12-bit successive-approximation ADC along with PWM generation and other mixed-signal peripherals, making it suitable for motor control and embedded control loops. The ADSP-BF547BBCZ-5A is a general-purpose Blackfin DSP and does not integrate an on-chip ADC of that type.
Can firmware or development tools be reused between the ADSP-BF547BBCZ-5A and ADSP-21992YBC?
No, not directly. The two devices belong to different DSP families (Blackfin vs. ADSP-2199x) with different instruction sets, memory maps, and peripheral architectures. Firmware and board support packages are not binary- or source-compatible across these families and would require redesign and re-porting.
What are the typical application targets for each device?
The ADSP-BF547BBCZ-5A is typically used in high-performance embedded signal processing such as industrial imaging, audio, and communications. The ADSP-21992YBC is typically used in mixed-signal control applications such as motor control and power conversion, where its integrated ADC and PWM peripherals are advantageous.
Are both devices currently recommended for new designs?
Designers should verify lifecycle status against the official Analog Devices product pages and authorized distributor listings before committing to a design. The ADSP-21992YBC belongs to an older ADSP-2199x family, and lifecycle status should be confirmed rather than assumed. No lifecycle claim should be made without checking current manufacturer documentation.