NXP Semiconductors MPC8245ARVV400D

Overview

MPC8245ARVV400D from Freescale Semiconductor is a 32-bit PowerPC™ MPC603e-based integrated processor combining a superscalar CPU core with PCI bridge, SDRAM memory controller, dual UARTs, DMA, I²C, and interrupt controllers in a single TBGA package. It operates at up to 400 MHz CPU frequency with 1.8–2.1 V core supply and supports 66 MHz PCI bus and 133 MHz memory interface for embedded control systems requiring high integration and deterministic timing.

For engineers reviewing the MPC8245ARVV400D datasheet, MPC8245ARVV400D pinout, MPC8245ARVV400D application, or MPC8245ARVV400D equivalent, key selection criteria include its 400 MHz CPU speed grade, 352-pin TBGA package, dual-clock domain architecture (separate CPU and peripheral PLLs), ECC-capable SDRAM interface supporting up to 2 GB, and PCI 2.2-compatibility with 5.0-V tolerance.

Technical Context

The MPC8245ARVV400D implements a dual-PLL architecture: one dedicated to the MPC603e core (CPU PLL) and another for peripheral logic (PCI/SDRAM clocks), enabling independent frequency scaling while maintaining synchronous bus coherency. Its internal 64-bit peripheral logic bus decouples address and data transfers, supporting store-gathering and memory prefetching.

It integrates full PCI 2.2 functionality-including dual address cycle (DAC) for 64-bit addressing, hardware-enforced coherency, and five request/grant arbitration pairs-alongside an SDRAM controller with programmable timing, ECC/parity support, and 32-/64-bit data path flexibility. The processor core includes 16-Kbyte instruction and data caches with lockable ways and dynamic power management (nap/doze/sleep modes).

Key Specifications

Pinout & Package

Package: 352-ball TBGA (tape ball grid array), 27 mm × 27 mm body, 1.27 mm ball pitch, RoHS-compliant lead-free finish. Thermal resistance RθJA = 16.1 °C/W (single-layer board), RθJC = 1.8 °C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar integrated processor applications.

Compared with MPC8241LVR400B, MPC8245ARVV400D provides PortX I/O and higher SDRAM bandwidth; compared with MPC8272CZQ400B, it offers proven MPC603e toolchain compatibility and lower power in nap/sleep modes but lacks USB and has smaller caches.

Availability

MPC8245ARVV400D is available at Aetrix Electronics and suitable for industrial control gateways, telecom line cards, medical imaging subsystems, and ruggedized network appliances requiring stable component supply across extended product lifecycles.

Supply support for MPC8245ARVV400D 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) was a fabless semiconductor company specializing in embedded processors, analog, and connectivity solutions for automotive, industrial, and networking markets.

The MPC8245ARVV400D belongs to Freescale's PowerQUICC™ II family of integrated communications processors, designed specifically for cost-sensitive, high-reliability embedded systems needing PCI connectivity, real-time control, and memory subsystem integration without external glue logic.

FAQ

What is the maximum supported SDRAM capacity for MPC8245ARVV400D?

The MPC8245ARVV400D supports up to 2 GB of SDRAM across one to eight memory banks, using 16-, 64-, 128-, 256-, or 512-Mbit devices. This capacity is achieved via its 32-bit or 64-bit configurable data path and programmable timing engine, which accommodates industry-standard SDRAM parts with tRCD, tRP, and CAS latency settings. The MPC8245ARVV400D's memory controller includes ECC support to protect against single-bit errors in safety-critical applications.

Does MPC8245ARVV400D support both big-endian and little-endian operation?

Yes, MPC8245ARVV400D supports selectable big-endian or little-endian operation through configuration bits in its internal configuration registers. This setting applies globally to PCI memory, I/O, and configuration space accesses, enabling interoperability with either endianness in heterogeneous system designs. The endian mode is established at reset and can be changed only via software write to the appropriate register, requiring careful coordination with boot code and operating system initialization routines for MPC8245ARVV400D.

What are the power supply sequencing requirements for MPC8245ARVV400D?

MPC8245ARVV400D requires strict supply voltage sequencing: VDD/AVDD/AVDD2 must stabilize before OVDD/GVDD/LVDD, with a minimum delay of 100 µs. Violating this sequence risks latch-up or undefined reset behavior. The recommended ramp rate for VDD is less than one SDRAM_SYNC_IN clock cycle, and HRST_CPU/HRST_CTRL must remain asserted for at least 255 bus clocks after VDD stabilization. These requirements are documented in Figure 2 and Table 2 of the MPC8245ARVV400D hardware specifications.

Can MPC8245ARVV400D operate as a PCI bus master and slave simultaneously?

Yes, MPC8245ARVV400D supports both PCI master (host) and slave (agent) modes concurrently. Its PCI interface includes dedicated address translation units (ATUs) for inbound and outbound transactions, enabling it to initiate memory reads/writes to other PCI devices while also responding to configuration and memory accesses from the PCI host. This dual-role capability is essential for applications like intelligent I/O adapters or bridging modules where MPC8245ARVV400D manages local resources and forwards traffic across the bus.

Is the MPC8245ARVV400D pinout compatible with other MPC824x variants?

No, MPC8245ARVV400D is not pin-compatible with earlier MPC8241 or later MPC8272 variants. While all MPC824x parts share the same 352-ball TBGA package outline, ball assignments differ significantly - especially for PortX signals, PLL configuration pins (PLL_CFG[0:4]), and memory interface strobes. The MPC8245ARVV400D's unique speed-grade marking ("400D") and required 2.0/2.1 V core supply further distinguish its electrical interface. Board-level reuse requires full schematic and layout validation for MPC8245ARVV400D.