NXP Semiconductors MPC603RZT200LC

Overview

MPC603RZT200LC from Freescale Semiconductor (formerly Motorola) is a PowerPC 603e RISC microprocessor with 200 MHz CPU frequency, 2.5 V ±5% core supply voltage, and industrial temperature range (–40°C to +105°C). It implements a five-stage pipeline, integrated FPU (functionally guaranteed per revision 2.1), 16 KB instruction cache, 16 KB data cache, and supports symmetric multiprocessing via bus snooping and cache coherency protocols. It was used in Apple Macintosh G3-era embedded control and communications subsystems.

For engineers reviewing the MPC603RZT200LC datasheet, MPC603RZT200LC pinout, MPC603RZT200LC application, or MPC603RZT200LC equivalent, key selection considerations include its BGA-255 package, 200 MHz deterministic timing under industrial thermal conditions, errata-aware cache coherency handling, and compatibility with PowerPC 603e software toolchains and memory controllers.

Technical Context

The MPC603RZT200LC implements a superscalar, five-stage integer pipeline with dual-issue capability for integer operations and separate floating-point unit supporting IEEE 754 single/double precision. Its bus interface complies with the PowerPC 60x bus protocol, supporting 64-bit data transfers at up to 66 MHz bus clock.

It integrates on-die L1 cache (16 KB I-cache + 16 KB D-cache), Harvard architecture, write-back policy, and supports cache lock, dcbz, dcbi, and touch-load (dcbt) instructions. Coherency relies on external snoop logic and requires careful sequencing around lwarx/stwcx and dcbz broadcast due to documented errata.

Key Specifications

Pinout & Package

Package: 255-pin Ceramic Ball Grid Array (CBGA), 17 mm × 17 mm, 1.27 mm ball pitch, RoHS-compliant lead-free finish. Thermal pad on underside requires dedicated PCB thermal via array.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC603RRX200LC, MPC603RZT200LC adds guaranteed –40°C operation and shares identical errata and FPU functionality; compared with MPC8245LZQ266B, it offers simpler board design and lower power but requires external memory controller and lacks PCI integration.

Availability

MPC603RZT200LC is available at Aetrix Electronics and suitable for network router control planes, industrial motion controllers, avionics data concentrators, and medical imaging subsystems requiring stable component supply and long-term lifecycle support.

Supply support for MPC603RZT200LC 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) designed high-performance PowerPC microprocessors for embedded computing, networking, and automotive applications before its 2015 acquisition.

The MPC603RZT200LC belongs to the PowerPC 603e family, engineered for cost-sensitive, thermally constrained embedded systems needing deterministic real-time performance and software compatibility with PowerPC toolchains.

FAQ

What is the operating temperature range specified for the MPC603RZT200LC?

The MPC603RZT200LC is rated for a junction temperature range of –40°C to +105°C, qualifying it for extended industrial applications where cold-start capability and high-temperature reliability are required. This differs from the standard LC-suffixed variants like MPC603RRX200LC, which are limited to 0°C minimum. The ZT suffix explicitly denotes the extended temperature grade, and thermal design must ensure TJ remains within this bound under worst-case power dissipation.

Does the MPC603RZT200LC include a functional floating-point unit?

Yes, the MPC603RZT200LC includes a fully functional IEEE 754-compliant floating-point unit, as confirmed by Freescale's PID7v-603e specification and revision 2.1 documentation. Unlike MPE603R variants marked "floating point not guaranteed," the MPC603RZT200LC is a full-featured MPC603R part. Its FPU supports both single- and double-precision arithmetic and is integral to real-time control and signal processing workloads executed on the MPC603RZT200LC.

What package type and pin count does the MPC603RZT200LC use?

The MPC603RZT200LC uses a 255-pin Ceramic Ball Grid Array (CBGA) package with a 17 mm × 17 mm body and 1.27 mm ball pitch. This package is mechanically and electrically identical to other MPC603R variants in the same family, including MPC603RRX200LC and MPC603RRX200TC. The CBGA construction provides superior thermal dissipation and signal integrity for high-speed bus operation, and requires precise PCB layout with thermal vias beneath the central die pad.

Which errata affect cache coherency usage on the MPC603RZT200LC?

The MPC603RZT200LC exhibits five documented errata impacting cache coherency, including indefinite dcbz broadcast retries, snoop copyback interfering with dcbi address broadcast, and lwarx/stwcx live-lock under bus pipelining. These require software mitigation-such as disabling dcbz broadcasting via BAT/PTE global bit settings, inserting NOPs before lwarx, or avoiding touch loads after MMU exceptions. These errata are identical across all revision 2.1 PID7t-603e parts, including the MPC603RZT200LC.

Is the MPC603RZT200LC pin-compatible with other PowerPC 603e microprocessors?

Yes, the MPC603RZT200LC is pin-compatible with other 255-ball CBGA-packaged PowerPC 603e microprocessors, including MPC603RRX200LC and MPC603RRX200TC. All share identical pinout, signal definitions, power/ground ball assignments, and thermal pad layout. However, differences in temperature grade and internal mask revision do not affect physical or electrical pin compatibility-only operational limits and errata applicability. System-level validation remains necessary due to potential timing or thermal derating effects.