SC8544CPXANGA - PowerQUICC Communication MPU | NXP
MPN： SC8544CPXANGA ✓ 啟用中SC8544CPXANGA 概覽
A PowerQUICC (PowerQUICC) processor is a family of communications-oriented microprocessors originally developed by Motorola/Freescale (now NXP Semiconductors). It integrates a PowerPC core with communications peripheral logic, placing it in the broader category hierarchy of MPU (microprocessor unit) -> embedded processor -> integrated circuit -> semiconductor. PowerQUICC parts are widely deployed in legacy networking equipment, telecommunications infrastructure, and industrial control systems where long product lifetimes outweigh raw compute performance.
Key features include a PowerPC-based communications engine, integrated peripheral controllers, and a packaging profile consistent with the SC8544 family. The part is offered in the surface-mount package identified by the suffix code, with operating characteristics aligned to the original Freescale SC8544 datasheet. As an aftermarket-distributed part, the SC8544CPXANGA is targeted at sustaining legacy designs rather than new product introduction.
Typical applications include routers and switches in legacy telecom installations, industrial serial communications controllers, and embedded networking appliances. Its PowerQUICC heritage makes it a fit where deterministic communications throughput and proven firmware ecosystems matter more than modern application-processor performance.
When designing with this part, verify pinout and supply voltage against the original Freescale SC8544 datasheet, because the aftermarket-distributed marking may obscure the revision letter. Plan for long lead times typical of mature NXP/Freescale MPU inventory and confirm RoHS status per lot before assembly.
This page synthesizes distributor availability across Octopart, DigiKey Marketplace, FPGACenter, and other channels, along with parametric comparison data not collected in any single manufacturer document, helping engineers locate the SC8544CPXANGA and plan substitution paths for legacy designs.
直接替換替代品，適用於 SC8544CPXANGA — 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。
SC8544CPXANGA-R
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
SC8544CPXANGA-600055
✅ 直接替換📋 參考替代品（不在目錄中）
SC8544CPXANGA 最大額定值與電氣特性
| Part Number | SC8544CPXANGA |
| Manufacturer | NXP Semiconductors (formerly Freescale Semiconductor) |
| Product Family | SC8544 PowerQUICC Communication |
| Core Architecture | PowerPC-based communications processor |
| Device Function | Embedded microprocessor (MPU) |
| 類別 | Integrated Circuits (ICs) - Embedded - Microprocessors |
| 安裝類型 | Surface Mount |
| Product Status | Active (aftermarket distribution via Rochester Electronics) |
| Aftermarket Distributor | Rochester Electronics |
SC8544CPXANGA standard 腳位配置指南
SC8544CPXANGA（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： SC8544CPXANGA.
請參閱 資料表 以查看完整腳位配置。
典型應用
SC8544CPXANGA 適用於 6 應用s: Legacy Telecom Routing Equipment, Industrial Serial Communications Controllers, Embedded Networking Appliances, Defense and Aerospace Communications, Power and Energy Substation Equipment, Railway Signaling and Control Systems.
Legacy Telecom Routing Equipment
The SC8544CPXANGA's PowerQUICC communications engine and integrated peripheral controllers make it a fit for legacy telecom routers and access multiplexers where firmware was developed against the SC8544 family. Its PowerPC core delivers deterministic throughput for packet processing at line rates typical of TDM and early Ethernet aggregation. Designers sustaining carrier-grade equipment benefit from the SC8544's proven long-life support via Rochester Electronics, which keeps installed base hardware in service. Use it between the TDM framer and the network processor, where the SC8544 handles cell/packet segmentation and reassembly without burdening a higher-tier CPU.
推薦
Industrial Serial Communications Controllers
The SC8544CPXANGA integrates multiple serial communications controllers that pair naturally with industrial multi-protocol gateways and serial device servers. Its peripheral mix supports HDLC, UART, and TDM interfaces commonly used in SCADA and substation automation equipment. The PowerPC core's deterministic interrupt response suits time-critical industrial protocols. Placed at the heart of the gateway, the SC8544 routes serial traffic between field devices and the host controller while maintaining protocol timing. Its legacy status is an asset here because industrial users prioritize long-term firmware stability over raw CPU frequency.
推薦
Embedded Networking Appliances
The SC8544CPXANGA serves as the central processor in embedded networking appliances such as VPN concentrators, print servers, and small-form-factor firewall appliances. Its PowerQUICC communications engine accelerates packet classification and forwarding, reducing host CPU load compared with a generic embedded controller. The integration of communications peripherals eliminates external bridge chips, simplifying BOM for cost-sensitive appliances. For designs shipping into 2026 and beyond, the SC8544's continued availability via Rochester Electronics is critical because the appliance market is dominated by long-life-cycle SKUs.
推薦
Defense and Aerospace Communications
The SC8544CPXANGA's heritage as a PowerQUICC communications processor and its long-term availability make it relevant to defense and aerospace programs with multi-decade fielding cycles. The PowerPC core's deterministic behavior and the part's mature firmware ecosystem align with DO-178 and similar certification regimes that favor proven architectures. The integrated communications engine simplifies board design for avionics databuses and secure radio interfaces. Verify lot-level RoHS and tin-lead finish compatibility with the program's assembly process before procurement, especially for lead-based solder processes.
推薦
Power and Energy Substation Equipment
The SC8544CPXANGA's combination of PowerPC core and communications peripherals makes it suitable for substation communications controllers and teleprotection equipment in power utility networks. Its deterministic serial performance supports IEC 61850 and legacy teleprotection protocols where timing margins are tight. The mature firmware ecosystem and aftermarket availability via Rochester Electronics align with the decades-long deployment horizon of substation infrastructure. Use the SC8544 between the analog front end and the protection relay logic, where it handles protocol framing and time synchronization.
推薦
Railway Signaling and Control Systems
The SC8544CPXANGA is deployed in legacy railway signaling controllers where its deterministic communications behavior and long-life availability are valued over modern CPU performance. The PowerQUICC architecture has a documented history in train control and interlocking systems, with certification packages built around it. Its surface-mount package and industrial temperature capability suit wayside cabinet installations. When sustaining these systems, prioritize lot traceability and conformal coating compatibility, both of which Rochester Electronics can document on request per the verified Octopart listing dated 2026-10-17.
推薦
推薦產品摘要
工程參考資料，適用於 SC8544CPXANGA — 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 | SC8544CPXANGA-R | SC8544CPXANGA-600055 | MPC8280VVQLDA |
|---|---|---|---|---|
| Brand | NXP Semiconductors (formerly Freescale) | NXP Semiconductors | NXP Semiconductors (via Rochester Electronics) | NXP Semiconductors |
| Core Architecture | PowerPC (PowerQUICC communications engine) | PowerPC (same die) | PowerPC (same die) | PowerPC (PowerQUICC II) |
| Product Family | SC8544 PowerQUICC | SC8544 PowerQUICC | SC8544 PowerQUICC | PowerQUICC II |
| Lifecycle Status | Aftermarket active (Rochester Electronics) | Aftermarket active | Aftermarket active | Mature / limited production |
| Distribution Channel | Rochester Electronics, YIC, FPGACenter | Rochester Electronics | DigiKey Marketplace (2156-SC8544CPXANGA-600055-ND) | Rochester Electronics / authorized distributors |
| Pin Compatibility | Reference baseline | Pin-compatible (same die) | Pin-compatible (same die) | NOT pin-compatible |
| Communications Peripherals | Integrated (UART, HDLC, TDM, FCC, SMC) | Same as SC8544CPXANGA | Same as SC8544CPXANGA | Different mix (PowerQUICC II peripherals) |
主要差異化特點
- Aftermarket-active status with documented supply chain (對比Generic obsolete IC listings)
- Integrated PowerQUICC communications engine on-chip (對比MPC8280 (PowerQUICC II))
- Mature firmware ecosystem (對比Newer QorIQ/Layerscape parts)
設計說明
The SC8544CPXANGA is a mature NXP/Freescale PowerQUICC part distributed through aftermarket channels. Verify the original Freescale SC8544 datasheet for exact package outline, pinout, and operating voltage before committing the PCB layout. Do not assume RoHS compliance by default; request lot-specific certificates from Rochester Electronics because legacy PowerQUICC parts may be supplied in either lead or lead-free finishes.
Sourcing the SC8544CPXANGA requires engaging Rochester Electronics or other aftermarket distributors because NXP/Freescale original production has ended. Build a multi-year inventory buffer based on the verified Octopart listings dated 2026-10-17, and qualify a second-source PowerQUICC family part in parallel to reduce single-source risk. Aftermarket prices fluctuate with inventory, so lock in supply contracts early.
The PowerQUICC SC8544 dissipates significant power at full communications engine load, especially with multiple FCC and SCC channels active. Estimate: a typical SC8544 system at 1.5 W dissipation in a 25 C ambient needs roughly 10 C/W junction-to-ambient thermal resistance to stay below the 70 C junction limit, achievable with 2 square inches of copper pour under the exposed pad. Confirm exact thermal numbers from the original Freescale SC8544 datasheet.
合規資訊
Compliance status must be verified per manufacturing lot with Rochester Electronics because the part is aftermarket-distributed and the original Freescale SC8544 datasheet does not specify current RoHS/REACH status.
