NXP Semiconductors MC7447ATHX1000NB

Overview

MC7447ATHX1000NB from Freescale Semiconductor is a 32-bit PowerPC G4 RISC microprocessor with a 1.0 GHz core frequency, 512-Kbyte unified L2 cache, and superscalar 7-stage pipeline architecture. It integrates a double-precision FPU, AltiVec SIMD unit, and hardware-enforced MESI coherency - designed for high-performance networking and embedded computing systems requiring deterministic real-time processing and thermal-aware operation.

For engineers reviewing the MC7447ATHX1000NB datasheet, MC7447ATHX1000NB pinout, MC7447ATHX1000NB application, or MC7447ATHX1000NB equivalent, key selection criteria include its 1.3 V ±50 mV core supply requirement, 360-ball ceramic BGA (HCTE) package, dynamic frequency switching (DFS) support, temperature diode integration, and compatibility with MPX/60x bus protocols in dual-voltage I/O environments (1.8 V or 2.5 V).

Technical Context

The MC7447ATHX1000NB implements the full PowerPC 32-bit architecture with separate 32-Kbyte L1 instruction and data caches (8-way set-associative), on-die 512-Kbyte unified L2 cache, and dual MMUs supporting 52-bit virtual addressing. Its execution resources include eleven independent units: four integer units, five-stage FPU, four vector units (AltiVec), and branch prediction with 128-entry BTIC and 2048-entry BHT.

It supports hardware-enforced cache coherency, load/store reservation for atomic operations, JTAG/COP debug interface, and three low-power states (Nap, Sleep, Deep Sleep) with DFS enabling software-controlled halving of core frequency. Thermal management includes an integrated temperature diode and core voltage derating capability.

Key Specifications

Pinout & Package

MC7447ATHX1000NB uses a surface-mount 360-ball ceramic ball grid array (HCTE) package with 27 mm × 27 mm footprint and 1.27 mm ball pitch. The package supports RoHS compliance and is optimized for high-speed signal integrity in multi-layer PCBs with controlled impedance routing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RISC microprocessor applications.

Compared with MC7447ATHX1000NB, MPC7447AEC1267B offers higher deterministic throughput at increased power, while MPC7445EC1000B trades L2 capacity and thermal features for lower cost and simpler thermal design - making MC7447ATHX1000NB optimal for thermally constrained, high-L2-bandwidth embedded computing.

Availability

MC7447ATHX1000NB is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, avionics, and secure networking applications requiring stable component supply, long-lifecycle support, and traceable sourcing for safety-critical deployments.

Supply support for MC7447ATHX1000NB 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 MC7447ATHX1000NB belongs to Freescale's PowerPC G4 family - engineered for high-performance, thermally aware embedded computing in systems demanding real-time determinism, hardware security primitives, and long-term obsolescence management.

FAQ

What is the maximum junction temperature specification for MC7447ATHX1000NB?

The MC7447ATHX1000NB has a maximum junction temperature (Tj) of 105°C under recommended operating conditions. This limit applies during full-power operation at 1000 MHz and 1.3 V core supply. Operation beyond this temperature risks reliability degradation and is not guaranteed per Freescale's hardware specifications. The integrated temperature diode enables real-time monitoring to prevent thermal runaway in sealed enclosures.

Does MC7447ATHX1000NB support pin-compatible replacement with earlier MPC7447 variants?

Yes, MC7447ATHX1000NB is a footprint-compatible, drop-in replacement for MPC7447 in applications using 1.3 V core supply. It retains identical pinout, package (360-ball HCTE), and electrical interface - while adding dynamic frequency switching and temperature diode functionality. No PCB changes are required, though firmware updates may be needed to leverage new thermal management features.

What bus protocols does MC7447ATHX1000NB natively support?

MC7447ATHX1000NB natively supports the MPX bus protocol and a subset of the 60x bus protocol for interfacing with main memory and system peripherals. These protocols define timing, arbitration, and coherency behavior for high-speed synchronous communication. The processor does not implement PCI, PCIe, or AMBA buses - external bridge logic is required for such interconnects.

How does dynamic frequency switching (DFS) function in MC7447ATHX1000NB?

Dynamic frequency switching (DFS) in MC7447ATHX1000NB allows software to halve the core clock frequency (e.g., from 1000 MHz to 500 MHz) without resetting the processor. This reduces typical power consumption from 16.0 W to 4.1 W in Nap mode while preserving register state and timebase functionality. DFS is controlled via SPR writes and requires no external hardware modification.

Is MC7447ATHX1000NB RoHS-compliant?

Yes, MC7447ATHX1000NB is manufactured in a RoHS-compliant 360-ball ceramic ball grid array (HCTE) package. Freescale explicitly lists "Surface mount RoHS-compliant 360 ceramic ball grid array (HCTE)" as one of the qualified packages for the MPC7447A family in its hardware specifications document (Rev. 5, January 2006). Lead-free solder reflow profiles must follow JEDEC J-STD-020 guidelines.