NXP Semiconductors MPC8323EZQADDC

Overview

MPC8323EZQADDC from NXP Semiconductors (formerly Freescale) is a PowerQUICC II Pro integrated communications processor featuring an e300c2 Power Architecture core (1.0 V, 266 MHz), dual integer units, 16 KB L1 instruction and data caches, no FPU, and a dedicated QUICC Engine block for offloading protocol processing. It integrates DDR1/DDR2 memory controller (32-bit, up to 266 MHz), PCI 2.3 interface (32-bit, 66 MHz), five universal communication controllers (UCCs), security engine SEC 2.2 (DES/3DES/AES/SHA-1/MD5), and supports ATM SAR up to OC-3 (155 Mbps) and IPv4/IPv6 packet termination in residential gateways and industrial control systems.

For engineers reviewing the MPC8323EZQADDC datasheet, MPC8323EZQADDC pinout, MPC8323EZQADDC application, or MPC8323EZQADDC equivalent, key selection criteria include e300c2 core frequency and voltage, DDR1/DDR2 interface compatibility, QUICC Engine UCC count and protocol support (Ethernet/ATM/HDLC), PCI host/agent mode capability, and SEC 2.2 cryptographic acceleration coverage for IPSec and IEEE 802.11i.

Technical Context

The MPC8323EZQADDC implements a split-architecture design: the e300c2 core handles control-plane tasks (OS, routing stacks, management), while the QUICC Engine's 32-bit RISC controller and five UCCs execute data-plane functions-including 10/100 Mbps Ethernet framing, ATM SAR, HDLC/transparent channelization (up to 64 channels), and TDM interface handling-without CPU intervention. Its DDR1/DDR2 controller supports only one chip select and lacks ECC or FCRAM support.

Power sequencing requires VDD (1.0 V ±50 mV) to ramp before GVDD (1.8 V or 2.5 V) and OVDD (3.3 V ±300 mV); PORESET must be asserted for ≥32 CLKIN cycles after stable clock application. The security engine operates as a single crypto-channel with discrete execution units for DES/3DES (DEU), AES (AESU), and hash algorithms (MDEU), but does not support SHA-256 or HMAC in hardware per SEC 2.2 specification.

Key Specifications

Pinout & Package

The MPC8323EZQADDC is housed in a 672-pin plastic ball grid array (PBGA) package with 35 mm × 35 mm body size and 1.0 mm ball pitch. Thermal pad on underside requires solder paste stencil opening and thermal via array for junction temperature control below 105°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8321EVRADDC, MPC8323EZQADDC delivers essential UTOPIA-based ATM offload and higher DDR bandwidth for OC-3 line cards; versus MPC8377ERMADDC, it trades raw performance and PCIe for proven maturity, lower power (1.48 W typical), and drop-in compatibility in existing PowerQUICC II Pro designs.

Availability

MPC8323EZQADDC is available at Aetrix Electronics and suitable for residential gateways, industrial protocol gateways, test & measurement instruments, and VoIP ATAs requiring stable component supply across extended product lifecycles.

Supply support for MPC8323EZQADDC 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

NXP Semiconductors develops high-reliability processors for networking, automotive, and industrial applications, with heritage from Freescale's PowerQUICC family and strong focus on long-term support for embedded systems.

The MPC8323EZQADDC belongs to the PowerQUICC II Pro communications processor line, designed specifically for cost-sensitive, low-power networking equipment requiring integrated data-plane acceleration and software compatibility with legacy PowerQUICC platforms.

FAQ

What is the maximum DDR2 data rate supported by the MPC8323EZQADDC?

The MPC8323EZQADDC DDR1/DDR2 memory controller supports a maximum data rate of 266 MHz, corresponding to 533 MT/s for DDR2 SDRAM. This is achieved using a single 32-bit interface with support for two ×16 devices. The controller does not support DDR2-667 or higher speeds, nor does it implement hardware calibration, bit deskew, or ECC-designers must rely on board-level timing closure and external error detection if required.

Does the MPC8323EZQADDC support PCIe instead of PCI?

No, the MPC8323EZQADDC implements a PCI 2.3-compliant 32-bit interface operating up to 66 MHz-not PCIe. It supports both host and agent modes, but lacks PCIe-specific features such as link training, transaction layer packets, or MSI interrupts. For PCIe connectivity, designers must use an external PCI-to-PCIe bridge or migrate to later-generation processors like the MPC8377ERMADDC, which includes native PCIe 1.0.

Can the MPC8323EZQADDC run Linux-based operating systems?

Yes, the MPC8323EZQADDC is fully supported by Linux distributions including Wind River Linux and Timesys Linux, leveraging its e300c2 core, MMU, and standard peripheral set (DUART, I²C, SPI, PCI). Community BSPs provide drivers for QUICC Engine UCCs, DDR controller, and SEC 2.2. However, due to the absence of an FPU, floating-point operations require software emulation unless offloaded to external DSPs.

What is the purpose of the 13 independent baud rate generators in the MPC8323EZQADDC?

The 13 independent baud rate generators in the MPC8323EZQADDC provide dedicated clock sources for each UCC serial channel, enabling simultaneous operation of multiple protocols-such as T1/E1, HDLC, UART, and BISYNC-at different bit rates without CPU overhead or external clock dividers. This allows the QUICC Engine to manage up to 64 HDLC channels or four TDM interfaces concurrently while maintaining precise timing alignment per link.

Is the MPC8323EZQADDC pin-compatible with other PowerQUICC II Pro processors like the MPC8321E?

No, the MPC8323EZQADDC is not pin-compatible with the MPC8321E or MPC8321EVRA. Although both belong to the PowerQUICC II Pro family, they differ in package (672-pin vs. 516-pin PBGA), power pin allocation (VDD/GVDD/OVDD counts), and QUICC Engine peripheral mapping (e.g., UTOPIA pins exist only on MPC8323E variants). Board-level migration requires complete PCB redesign and signal re-routing.