NXP Semiconductors MC7447AVU1420LB

Overview

MC7447AVU1420LB from Freescale Semiconductor is a 1420 MHz PowerPC G4 RISC microprocessor with 32-Kbyte L1 instruction and data caches, 512-Kbyte unified on-die L2 cache, and integrated AltiVec SIMD engine. It implements full PowerPC 32-bit architecture, supports MPX/60x bus protocols, and targets high-performance networking and embedded computing systems requiring deterministic real-time processing.

For engineers reviewing the MC7447AVU1420LB datasheet, MC7447AVU1420LB pinout, MC7447AVU1420LB application, or MC7447AVU1420LB equivalent, key selection criteria include its 1.3 V core supply, dynamic frequency switching (DFS), temperature diode, 360-ball ceramic BGA package, and support for big/little-endian operation in mission-critical control and signal processing platforms.

Technical Context

The MC7447AVU1420LB features a seven-stage superscalar pipeline with up to 16 instructions in flight, eleven independent execution units (including four integer, five vector, and one FPU), and hardware-enforced MESI coherency for multiprocessing. Its memory subsystem includes dual 32-Kbyte 8-way set-associative L1 caches and a fully pipelined 512-Kbyte 8-way L2 cache delivering 32 bytes/cycle to L1.

It integrates JTAG/COP debug interface, time base counter/decrementer, performance monitor, and thermal management via DFS and on-die temperature diode. Core voltage derating (1.2 V) and three low-power states-Nap, Sleep, and Deep Sleep-are supported for power-constrained embedded deployments.

Key Specifications

Pinout & Package

MC7447AVU1420LB is housed in a surface-mount 360-ball ceramic ball grid array (HCTE) package with 1.27 mm pitch, RoHS-compliant, and designed for high-thermal-performance PCB mounting using thermal vias and copper pour under the die.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC7447AEC1420B and MPC7447AVT1267B, MC7447AVU1420LB uniquely combines maximum 1420 MHz performance, BGA packaging for high-density routing, and full thermal/power management features-making it optimal for space-constrained, high-throughput embedded systems where peak deterministic compute is required.

Availability

MC7447AVU1420LB is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, avionics, and secure networking applications requiring stable component supply and long-term lifecycle support.

Supply support for MC7447AVU1420LB 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 family was designed as a high-performance, low-power evolution of the PowerPC G4 architecture-targeting demanding embedded computing applications where AltiVec acceleration, cache coherency, and thermal-aware operation are critical.

FAQ

What is the core voltage requirement for MC7447AVU1420LB?

The MC7447AVU1420LB requires a nominal core supply of 1.3 V ±50 mV DC. It also supports a derated 1.2 V ±50 mV mode for reduced power consumption, provided core frequency constraints specified in Section 5.3 of the hardware specifications are observed. Both VDD and AVDD must be supplied at the same voltage level, and strict sequencing relative to OVDD is mandatory to prevent latch-up or functional failure.

Does MC7447AVU1420LB support little-endian operation?

Yes, MC7447AVU1420LB supports both big-endian and little-endian operation modes, including misaligned little-endian accesses. Endianness is controlled dynamically via the MSR[LE] bit and can be switched on-the-fly without pipeline flush. This capability is essential for interoperability with x86-based peripherals and legacy software stacks in heterogeneous embedded systems.

How does Dynamic Frequency Switching (DFS) work on MC7447AVU1420LB?

DFS on MC7447AVU1420LB allows software to halve the core clock frequency (e.g., from 1420 MHz to 710 MHz) while maintaining full architectural state and cache coherency. It operates in Nap, Sleep, and Deep Sleep modes and is implemented via the HID0[DFSE] bit and HID1[DFSS] field. No external hardware changes are needed-only firmware-level register writes and PLL relock handling per the MPC7450 Reference Manual.

What package type is used for MC7447AVU1420LB?

MC7447AVU1420LB uses a surface-mount 360-ball ceramic ball grid array (HCTE) package with 1.27 mm pitch and RoHS-compliant finish. The package features an exposed thermal pad on the underside for direct PCB thermal coupling and is qualified for industrial temperature range operation (0°C to 105°C junction).

Is MC7447AVU1420LB pin-compatible with earlier MPC7447 variants?

Yes, MC7447AVU1420LB is footprint-compatible and a drop-in replacement for MPC7447 in applications using 1.3 V core supply, as confirmed in Freescale's Hardware Specifications Rev. 5. It retains identical pinout, electrical characteristics, and bus timing-but adds Dynamic Frequency Switching and an integrated temperature diode not present in the base MPC7447.