SC8544CPXAQGA - PowerQUICC III MPC8544 MPU | NXP | Industrial
MPN： SC8544CPXAQGA ✗ 停產SC8544CPXAQGA 概覽
A microprocessor (MPU) is an integrated central processing unit that fetches, decodes, and executes instructions from memory and orchestrates peripherals. The MPC8544 sits in the system hierarchy as: SoC -> communications processor -> microprocessor -> integrated circuit. PowerQUICC III devices were NXP/Freescale's flagship communications processors targeting routers, switches, and embedded control planes where deterministic throughput, multi-protocol I/O, and integration density all matter.
Key features attributed to this part family include a Power Architecture e500 core, hardware acceleration blocks for encryption and pattern matching, DDR memory controllers, multiple Gigabit Ethernet MACs, and PCI Express / RapidIO serial interfaces (as documented in the MPC8544 family datasheet). The part has been observed in distributor listings at indicative unit pricing around USD 144.74 - USD 168.47 across LCSC, Rochester Electronics, FPGACenter, and YIC Electronics, reflecting its position as a long-lifecycle industrial component rather than a high-volume consumer IC.
The SC8544CPXAQGA is widely deployed in legacy router line cards, telecom backplane controller boards, and industrial switching fabrics. Its integration of multiple gigabit interfaces makes it attractive for designs where board area and BOM cost are at a premium. Designers continue to specify it today because the surrounding ecosystem - compilers, RTOS support, and reference schematics - remains mature and stable.
When designing with this part, engineers should plan around the relatively high power dissipation typical of PowerQUICC III devices and ensure the PCB thermal design delivers adequate heat spreading through the exposed thermal features of the package. Long-lifecycle procurement planning is advised because this part is approaching or has entered NRND/EOL in some channels; confirm last-time-buy status with NXP before committing to new production.
This page synthesizes distributor pricing snapshots, drop-in compatibility notes, and design-in considerations specifically for the SC8544CPXAQGA variant, which are not consolidated in any single manufacturer document.
直接替換替代品，適用於 SC8544CPXAQGA — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
MPC8544EPXAQGA
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MPC8544VTAQGA
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MPC8544CPXAQGA
✅ 直接替換📋 參考替代品（不在目錄中）
MPC8544PXAQGA
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
SC8544CPXAQGA 最大額定值與電氣特性
| Manufacturer | NXP Semiconductors (Freescale) |
| Product Family | PowerQUICC III |
| Device Designation | MPC8544 |
| Part Type | Specialized IC / RISC Microprocessor (MPU) |
| 安裝類型 | Surface Mount |
| Packaging | Bulk |
| RoHS 狀態 | Compliant (per Rochester Electronics listing) |
SC8544CPXAQGA standard 腳位配置指南
SC8544CPXAQGA（standard 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： SC8544CPXAQGA.
請參閱 資料表 以查看完整腳位配置。
典型應用
SC8544CPXAQGA 適用於 7 應用s: Telecom Routing Line Cards, Industrial Control Plane Boards, Network Switch Fabric Controllers, Legacy Aerospace Avionics Systems, Storage Area Network Controllers, Secure VPN Appliances, Enterprise Router Mainboards.
Telecom Routing Line Cards
The SC8544CPXAQGA's PowerQUICC III architecture delivers integrated multi-gigabit Ethernet MACs and PCI Express lanes suited to telecom routing line cards where board area is constrained. Designers using this part pair it with serial RapidIO or PCIe fabric switches to aggregate T1/E1 or Ethernet uplinks; its hardware encryption engine accelerates IPsec tunnels common in carrier-grade routers. Compared to discrete CPU plus network processor designs, this SoC reduces BOM cost by integrating both processing and switching fabric control.
推薦
Industrial Control Plane Boards
For industrial control planes running deterministic Ethernet and proprietary fieldbus, the SC8544CPXAQGA provides the integration density needed to consolidate multiple legacy processors into one. The part's DDR memory controller and DMA engines allow deterministic latency suitable for industrial automation protocols like PROFINET or EtherCAT. Its long-lifecycle availability through Rochester Electronics supports production runs measured in decades rather than months.
推薦
Network Switch Fabric Controllers
Layer 2/3 managed switches with high port counts use the SC8544CPXAQGA as the management and forwarding control CPU because its PowerQUICC III architecture supports PCIe and RapidIO links to switch ASICs. This eliminates a dedicated network processor; the device's multi-protocol I/O handles routing tables, ACLs, and management-plane protocols like SNMP and SSH without external acceleration. Stocking this part via Rochester Electronics ensures long-term supply for carrier-grade switches.
推薦
Legacy Aerospace Avionics Systems
Where long-term logistics support outweighs the need for the newest silicon, the SC8544CPXAQGA via Rochester Electronics serves aerospace and defense programs originally designed around PowerQUICC III. The processor's deterministic interrupt handling and Error Correction Code (ECC) memory support meet the data integrity expectations of avionics. Engineers specify this part for retrofit and re-certification of legacy platforms where redesign is cost-prohibitive.
推薦
Storage Area Network Controllers
The SC8544CPXAQGA's combination of PCI Express endpoints and hardware-accelerated cryptography addresses RAID controller, SAN switch, and NAS appliance architectures. Its power-efficient e500 core and integrated DMA reduce the parts count of multi-drive enclosures. Engineers value this part's longevity through Rochester Electronics for storage OEM build programs that span years.
推薦
Secure VPN Appliances
For hardware VPN concentrators and IPsec gateways, the SC8544CPXAQGA's integrated Security Engine (SEC) offloads AES, 3DES, SHA, and public-key operations from the e500 core, freeing CPU cycles for routing logic. This hardware offload is often cited as the reason designers select this part over general-purpose microprocessors that lack crypto acceleration. Combined with multiple gigabit Ethernet interfaces, a single SC8544CPXAQGA can terminate dozens of IPsec tunnels in a compact appliance footprint.
推薦
Enterprise Router Mainboards
Mid-range enterprise routers leverage the SC8544CPXAQGA to integrate routing, switching-control, and management-plane functions into a single SoC. Its multi-protocol support (Ethernet, PPP, HDLC, ATM) handles WAN interfaces common in branch-office routers, while the e500 core runs the routing stack (e.g., VxWorks, Linux, eCOS). Compared to multi-chip solutions, the PowerQUICC III integration reduces PCB complexity and cost-per-port significantly.
推薦
推薦產品摘要
工程參考資料，適用於 SC8544CPXAQGA — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MPC8544EPXAQGA | MPC8544VTAQGA | MPC8544CPXAQGA | MPC8544PXAQGA |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors (Freescale) | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Package | PQ38K (KFBA) | PQ38K (KFBA) - same | PQ38K (KFBA) - same | PQ38K (KFBA) - same | PQ38K (KFBA) - same |
| Core Architecture | Power Architecture e500 | Power Architecture e500 - same | Power Architecture e500 - same | Power Architecture e500 - same | Power Architecture e500 - same |
| Packaging Type | Bulk | Bulk | Bulk | Bulk | Bulk |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant |
主要差異化特點
- Long-lifecycle availability via Rochester Electronics (對比Newer QorIQ LS1028A)
- Integrated security engine for IPsec acceleration (對比Generic ARM-based MCU)
- Power Architecture e500 deterministic performance (對比cPCI general-purpose SBC)
設計說明
Estimated: PowerQUICC III devices at full e500 core load with all peripherals enabled can dissipate 5-12 W depending on frequency and voltage. The PQ38K (KFBA) package uses thermal vias and a ground pad to spread heat into the PCB. Engineers should plan for copper-pour cooling across at least 1 square inch on top layer plus 0.5 square inch on the back side; larger pours are recommended if junction temperature rise must stay below 30 C at maximum ambient.
DDR interface signals (DQ, DQS, CLK, address/control) require length-matched routing within the MPC8544 datasheet tolerances, typically +/-25 mil for byte lanes. Power rails should be decoupled with high-frequency ceramic capacitors placed within 100 mil of each supply pin; bulk decoupling on the order of 47-100 uF low-ESR polymer is recommended at the regulator output. PCI Express lanes should observe 90-ohm differential impedance with reference plane continuity under the lanes.
Do not assume the SC8544CPXAQGA is fully identical to the MPC8544 prefix variant across all firmware; always match the device-tree and u-boot revision to the specific part designation. Confirm last-time-buy status with NXP through authorized distributors for new production runs, because PowerQUICC III has been progressively sunset in favor of the QorIQ and Layerscape families. Validate that the compiler, RTOS BSP, and JTAG probe you plan to use support the exact silicon revision.
合規資訊
RoHS compliance confirmed via Rochester Electronics listing on FPGACenter. Other compliance items (REACH, halogen-free) not provided in source data.
