MPC8548EPXAUJC557
MPC8548EPXAUJC557 - PowerQUICC III 1.333GHz MPU 783-FCPBGA | NXP
The NXP (formerly Freescale) MPC8548EPXAUJC557 is a PowerQUICC III integrated communications processor built on the PowerPC e500 core, delivering up to 1.333 GHz of compute performance in a 783-ball FCBGA (29 mm x 29 mm) package. It targets deeply embedded networking, industrial control, and secure communications workloads where deterministic processing, on-chip peripherals, and a high-bandwidth system bus are required in a single device. The integrated memory controller, multi-protocol Ethernet, and security engine make it a System-on-Chip (SoC) replacement for designs that previously required a CPU plus an external NIC.
A microprocessor (MPU) is an integrated circuit that fetches, decodes, and executes program instructions at high speed and serves as the central processing unit of an embedded system. Within the broader hierarchy it sits below application processors but above microcontrollers (MCUs), typically offering higher clock frequencies, MMU/MPU memory protection, external DRAM support, and rich I/O. The MPC85xx family adds hardware-accelerated networking and security blocks that offload packet processing and crypto from the core. Compared with a generic MPU, the PowerQUICC III family integrates RapidIO, multi-speed Ethernet, DDR2 memory controllers, and a programmable QUICC Engine, eliminating several discrete components from a typical line-card BOM.
Key features of the MPC8548EPXAUJC557 include a 32-bit PowerPC e500 core running at 1.333 GHz, dual-issue superscalar pipeline, integrated DDR/DDR2 SDRAM controller with ECC, four Gigabit Ethernet MACs, a Security Engine (SEC 4.0+) supporting DES/3DES/AES/SHA/RSA, RapidIO interconnect, PCI Express interface, and a programmable QUICC Engine for legacy telecom protocols. The device is offered in the 783-ball FC-PBGA (783-FCPBGA) package designed for high-density, high-speed signaling with controlled-impedance routing to support gigahertz-class operation.
The MPC8548E architecture combines an e500 core, 512 KB of internal L2 cache, and an integrated system-on-chip platform that includes the DDR2 memory controller and RapidIO fabric. Power is supplied on three rails (1.0 V core, 1.5 V DDR2 termination, and 2.5 V/3.3 V I/O) and the device is rated for the industrial -40 C to +105 C junction temperature range. The 90 nm CMOS process and advanced clock tree design give the die enough headroom to sustain 1.333 GHz with deterministic interrupt latency.
Typical applications for the MPC8548EPXAUJC557 include enterprise routers and switches, secure access gateways, multi-service line cards, industrial control and automation controllers, defense and aerospace embedded computing, single-board computers (VME/VPX), and protocol-aware network appliances. Designers select this part when deterministic gigahertz-class performance, integrated security, and multi-protocol I/O are required without resorting to a discrete CPU-plus-ASIC architecture.
When designing with this device, plan thermal dissipation first: at maximum CPU load the core can approach several watts, and the 783-FCBGA package demands a multilayer PCB with a continuous ground/power plane under the die and dedicated thermal vias. Decoupling must follow the datasheet's reference layout exactly to keep the high-speed SerDes and DDR2 interface within jitter budgets, and JTAG access (TDI/TDO/TCK/TMS/TRST) must be brought out to a 14-pin header for boundary-scan and code debug.
This page synthesizes distributor availability, package-level pricing, and engineering design considerations for the MPC8548EPXAUJC557 that go beyond the manufacturer datasheet, with side-by-side comparisons against other PowerQUICC III and QorIQ derivatives.
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