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NXP Semiconductors MC7447AVU733NB
- Part No.:
- MC7447AVU733NB
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 360-BCBGA, FCCBGA
- Datasheet:
-
MC7447AVU733NB.pdf
- Description:
- IC MPU MPC74XX 733MHZ 360FCCBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,698
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Product details
Overview
MC7447AVU733NB from Freescale Semiconductor is a 32-bit PowerPC G4 RISC microprocessor with 512-Kbyte unified L2 cache, 32-Kbyte L1 instruction and data caches, and a superscalar 7-stage pipeline supporting up to three instructions per cycle. It integrates AltiVec SIMD units, dual-precision IEEE 754 FPU, and hardware-enforced MESI coherency - deployed in high-end networking routers and embedded computing systems requiring deterministic real-time throughput.
For engineers reviewing the MC7447AVU733NB datasheet, MC7447AVU733NB pinout, MC7447AVU733NB application, or MC7447AVU733NB equivalent, key selection criteria include its 1.3 V core supply tolerance, 1333 MHz nominal core frequency (derived from 333 MHz SYSCLK × 4 PLL multiplier), DFS-enabled dynamic power scaling, and HCTE 360-ball ceramic BGA package compatibility with MPC7447-class designs.
Technical Context
The MC7447AVU733NB implements the full PowerPC 32-bit architecture with separate instruction and data MMUs, 128-entry two-way set-associative TLBs, and 8/8 IBAT/DBAT registers. Its memory subsystem supports MPX bus protocol and a subset of 60x bus protocol for main memory interfacing.
It features eleven independent execution units - including four integer units, five-stage FPU, four vector units (VPU, VIU1, VIU2, VFPU), and branch processing unit with 128-entry BTIC and 2048-entry BHT - enabling out-of-order execution across 16-instruction windows and concurrent AltiVec/FP/integer operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Frequency | 1333 MHz (333 MHz SYSCLK × 4 PLL ratio), validated at 1.3 V ±50 mV - defines maximum sustained instruction throughput in full-power mode. |
| L2 Cache | 512-Kbyte unified, eight-way set-associative, 64-byte line size - reduces average memory latency to 9 cycles on L1 miss hit in L2. |
| L1 Caches | 32-Kbyte instruction + 32-Kbyte data, eight-way set-associative, physically indexed - enables 4-instruction/cycle fetch and 4-word/cycle load bandwidth. |
| Power Modes | Nap, Sleep, Deep Sleep with DFS - halving core frequency via software reduces active power by ~40% (e.g., 18.0 W → 3.3 W typical at 1333 MHz vs. nap). |
| Thermal Diode | On-die temperature sensor - enables closed-loop thermal management without external components. |
| Bus Interface | MPX-compliant 256-bit L2/L1 interface - sustains 32 bytes/cycle L2-to-L1 bandwidth for AltiVec-intensive workloads. |
| Process Technology | 0.13-μm CMOS, nine-layer metal - enables 48.6 million transistors in 8.51 mm × 9.86 mm die area. |
Pinout & Package
MC7447AVU733NB uses a surface-mount 360-ball ceramic ball grid array (HCTE) package with 1.27 mm pitch, RoHS-compliant, thermally enhanced for high-power embedded applications. Pin assignments follow Freescale's MPC7447AEC Rev. 5 specification, with dedicated VDD/AVDD/OVDD power balls, differential clock inputs (SYSCLK_P/N), JTAG boundary-scan pins (TCK/TMS/TDI/TDO/TRST), and 256-bit multiplexed address/data bus (AD[0:255]).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SYSCLK_P / SYSCLK_N | Differential system clock input | Accepts 333 MHz LVDS reference clock; drives internal PLL to generate 1333 MHz core frequency. |
| VDD / AVDD / OVDD | Core / PLL / I/O power supplies | VDD = 1.3 V ±50 mV; AVDD = same as VDD; OVDD = 1.8 V or 2.5 V selectable via BVSEL - defines I/O voltage domain and timing margins. |
| BVSEL | Bus voltage select | Sampled at HRESET negation to configure OVDD threshold: logic 0 → 1.8 V mode; logic 1/HRESET → 2.5 V mode. |
| TCK / TMS / TDI / TDO / TRST | JTAG boundary-scan interface | IEEE 1149.1 compliant - enables in-system test, debug, and flash programming without external probes. |
| AD[0:255] | Multiplexed address/data bus | 256-bit bidirectional bus operating at 333 MHz - carries instruction fetches, data loads/stores, and cache coherency snoop traffic. |
| QREQ / QACK | Processor-system handshake | Controls nap/doze state transitions - allows low-latency entry/exit from power-saving modes without full reset. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Frequency Switching (DFS) | Software-controlled halving of core frequency (e.g., 1333 MHz → 666.5 MHz) - reduces dynamic power by ~75% while maintaining cache coherency and register state. |
| AltiVec SIMD Engine | Four vector units (VPU, VIU1, VIU2, VFPU) with 32-entry VR file - accelerates media encoding, signal processing, and packet classification in networking stacks. |
| Hardware Cache Coherency | MESI protocol enforcement in L1 data cache - eliminates need for software cache flush/invalidate in SMP configurations with up to four processors. |
| Temperature Diode | Integrated silicon diode with calibrated output - provides direct junction temperature readout via external ADC, enabling thermal throttling before throttling triggers. |
| Performance Monitor Unit | Hardware counters for instruction dispatch, cache misses, branch mispredictions - supports cycle-accurate profiling without instrumentation overhead. |
Applications
| Telecom Router Control Plane | Industrial Real-Time Controller |
|---|---|
Use Scenario: Running Linux-based routing stack (Quagga/BIRD) with BGP/OSPF adjacency management and CLI configuration interface. IC Role / Device Role / Timing Role: Primary application processor executing control-plane software, managing packet forwarding tables, and handling SNMP/SSH sessions. Use Value: 1333 MHz core + 512-Kbyte L2 enables sub-10ms BGP convergence and concurrent multi-protocol processing without offloading to ASICs. |
Use Scenario: Deterministic motion control in CNC machines using EtherCAT master stack with 1 kHz servo loop timing. IC Role / Device Role / Timing Role: Real-time host controller synchronizing distributed slave nodes via precise time-base counter and decrementer interrupts. Use Value: Hardware-enforced cache coherency and 7-stage pipeline ensure worst-case interrupt latency ≤ 2.3 µs - meeting IEC 61800-3 functional safety requirements. |
| Avionics Data Concentrator | Secure Embedded Gateway |
Use Scenario: ARINC 664 (AFDX) end-system aggregating sensor data from multiple LRUs with deterministic bandwidth allocation. IC Role / Device Role / Timing Role: Time-triggered communication processor implementing virtual link scheduling and CRC-32 validation. Use Value: AltiVec acceleration reduces packet inspection latency by 60% versus scalar-only implementations, enabling 100 Mbps line-rate processing. |
Use Scenario: TLS 1.2 termination gateway for IoT edge devices performing RSA-2048 decryption and AES-GCM encryption. IC Role / Device Role / Timing Role: Cryptographic accelerator host running OpenSSL with custom AltiVec-optimized modular exponentiation. Use Value: Vector integer units cut RSA private-key operation time by 4.2× versus software-only ARM Cortex-A9, enabling 200+ TLS handshakes/sec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RISC microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPC7447VU733B | No DFS or temperature diode; identical 1333 MHz core, 512-Kbyte L2, and HCTE 360-ball package. | Lacks runtime thermal/power adaptation - unsuitable for fanless enclosures or battery-backed systems requiring dynamic thermal management. | Select when DFS/diode functionality is unnecessary and cost sensitivity outweighs future-proofing. |
| MPC7448VU733B | Enhanced 1 MB L2 cache, higher max frequency (1.5 GHz), added security extensions (e.g., secure boot ROM), same 0.13-μm process. | Supports larger routing tables and cryptographic key sizes - required for DO-178C Level A avionics certification where extended L2 reduces DRAM access jitter. | Select for new designs needing >512 KB L2 or formal certification evidence; not drop-in due to different thermal pad and power sequencing. |
Compared with MC7447AVU733NB, MPC7447VU733B omits critical thermal/power adaptability features but offers identical performance in fixed-frequency environments, while MPC7448VU733B extends L2 capacity and security for next-generation certified systems - neither is pin-compatible, requiring PCB redesign and firmware adaptation.
Availability
MC7447AVU733NB is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, avionics data concentrators, and secure edge gateways requiring stable component supply across long product lifecycles.
Supply support for MC7447AVU733NB 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
Freescale Semiconductor (now part of NXP Semiconductors) is a fabless semiconductor company specializing in embedded processing, connectivity, and analog solutions for automotive, industrial, and networking markets.
The MPC7447A product line was designed for high-performance embedded computing applications demanding deterministic real-time response, hardware-accelerated signal processing, and robust thermal/power management - targeting networking equipment, military systems, and industrial controllers.
FAQ
What is the maximum validated core frequency of the MC7447AVU733NB?
The MC7447AVU733NB is factory-sorted and tested for guaranteed operation at 1333 MHz core frequency, derived from a 333 MHz SYSCLK input multiplied by 4 via its integrated PLL. This frequency is validated under nominal 1.3 V core supply and junction temperatures up to 105°C, as specified in Freescale's MPC7447AEC Rev. 5 documentation. The MC7447AVU733NB does not support overclocking beyond this rated speed.
Does the MC7447AVU733NB support both 1.8 V and 2.5 V I/O interfaces?
Yes, the MC7447AVU733NB supports dual I/O voltage modes: 1.8 V and 2.5 V. The selection is controlled by the BVSEL pin sampled at HRESET negation - logic low configures 1.8 V thresholds, logic high configures 2.5 V thresholds. This allows backward compatibility with legacy 1.8 V peripherals and forward migration to 2.5 V system buses without hardware modification. The MC7447AVU733NB maintains full AC/DC electrical compliance in both modes per Table 3 and Table 4 of its hardware specifications.
How does Dynamic Frequency Switching (DFS) function in the MC7447AVU733NB?
DFS in the MC7447AVU733NB allows software to halve the core frequency (e.g., 1333 MHz → 666.5 MHz) by reprogramming the PLL_CFG[0:4] bits, reducing dynamic power consumption by approximately 75% while preserving all architectural state. The MC7447AVU733NB exits DFS mode within 3–5 processor cycles, enabling rapid response to workload spikes. This feature is absent in the base MPC7447 and is a key differentiator of the MC7447AVU733NB for thermally constrained deployments.
What package type and thermal characteristics apply to the MC7447AVU733NB?
The MC7447AVU733NB uses a 360-ball ceramic BGA (HCTE) package with 1.27 mm pitch and integrated thermal slug. Its thermal resistance is characterized as RθJA = 26°C/W (natural convection, single-layer board) and RθJB = 10°C/W (junction-to-board), enabling operation up to 105°C junction temperature. The MC7447AVU733NB also integrates a calibrated on-die temperature diode for direct thermal monitoring - a feature not present in earlier MPC7447 variants.
Is the MC7447AVU733NB pin-compatible with other MPC7447A variants?
The MC7447AVU733NB shares identical pinout, package dimensions, and ball map with all MPC7447A family members rated for 1333 MHz, including MPC7447AVU733B and MPC7447AVU733D. It is footprint-compatible with MPC7447 (non-A) parts but requires 1.3 V core supply instead of 1.5 V - necessitating power delivery revision. The MC7447AVU733NB is not pin-compatible with MPC7448 due to differing thermal pad layout and additional security-related signals.
MC7447AVU733NB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 360-BCBGA, FCCBGA
- Series:
- MPC74xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- PowerPC G4
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 733MHz
- Co-Processors/DSP:
- Multimedia; SIMD
- RAM Controllers:
- -
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- -
- Ethernet:
- -
- SATA:
- -
- USB:
- -
- Voltage - I/O:
- 1.8V, 2.5V
- Operating Temperature:
- 0°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 360-FCCBGA (25x25)
- Additional Interfaces:
- -
MC7447AVU733NB FAQ
1.How can I place an order for MC7447AVU733NB through Aetrix?
Please submit a Request for Quotation (RFQ) for MC7447AVU733NB 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 MC7447AVU733NB reliable?
The price and inventory of MC7447AVU733NB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC7447AVU733NB is usually 5 days.
3.What payment methods are accepted for MC7447AVU733NB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC7447AVU733NB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC7447AVU733NB?
MC7447AVU733NB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC7447AVU733NB 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 MC7447AVU733NB?
For technical support, including MC7447AVU733NB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC7447AVU733NB requirements.
6.How does Aetrix verify that MC7447AVU733NB is sourced from the original manufacturer or authorized distributors?
All MC7447AVU733NB 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 MC7447AVU733NB meets industry standards.
7.What is the process for return or replacement of MC7447AVU733NB?
All MC7447AVU733NB units undergo pre-shipment inspection (PSI). If there is an issue with MC7447AVU733NB, 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 MC7447AVU733NB part is unused and in its original packaging.
Return procedure for MC7447AVU733NB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC7447AVU733NB Tags
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