SC755BPX350LE - Power Architecture RISC Microprocessor | NXP | 360MHz
MPN： SC755BPX350LE ✗ 停產SC755BPX350LE 概覽
What is a RISC microprocessor? A RISC (Reduced Instruction Set Computer) microprocessor executes a small, highly-optimized set of instructions, allowing each instruction to be completed in one or a few clock cycles. Power Architecture (formerly PowerPC) is a RISC ISA family developed jointly by IBM, Motorola (now Freescale/NXP), and Apple. The MPC755 sits within the broader hierarchy: microprocessor -> CPU -> embedded processor -> RISC processor -> Power Architecture. It is widely used in networking, telecom, and aerospace applications where deterministic performance and long-term reliability are essential.
Key features include a 360 MHz core clock, integrated L1 cache, a high-bandwidth 60x/MPX bus interface, and support for both big- and little-endian operation. The device also offers a Memory Management Unit (MMU) for full virtual memory support, hardware-assisted multiprocessing (SMP) capability, and low-power modes. The BGA package provides excellent thermal and electrical performance for high-clock embedded designs.
Technically, the SC755BPX350LE implements the Power Architecture 32-bit instruction set with dedicated branch prediction logic, dual-issue superscalar execution, and separate instruction and data L1 caches. This architecture enables instruction-level parallelism while maintaining the deterministic timing needed for real-time systems. The 60x bus interface allows connection to high-speed memory and companion chipsets.
Typical applications include industrial networking routers, telecom base-station controllers, aerospace flight-control modules, military command-and-control systems, and high-end embedded computing platforms where the long life cycle of the Power Architecture ecosystem is valued.
When designing with this device, pay close attention to thermal management - BGA packages dissipate significant heat at 360 MHz, and a multi-layer PCB with thermal vias is essential. Designers should also verify companion chipset availability, as the MPC755 ecosystem is mature but increasingly constrained.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not collected in any single manufacturer datasheet.
直接替換替代品，適用於 SC755BPX350LE — 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。
此系列的變體
與下列產品可直接替換的同系列型號： SC755BPX350LE （相同外形與佔位） — 差異在於 Architecture, Package, Process Technology.
MPC755BPX350LE
✅ 直接替換聯絡詢價
查看資料表 →MPC755BPX400LE
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MPC755BPX300LE
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MPC745BXX350LE
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MPC750BPX350LE
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
SC755BPX350LE 最大額定值與電氣特性
| Architecture | Power Architecture (PowerPC) 32-bit RISC |
| Core Frequency | 350 MHz |
| Bus Frequency | 360 MHz |
| Instruction Set | Power Architecture 32-bit |
| Bus Interface | 60x/MPX bus |
| MMU | Yes - hardware memory management |
| Endianness | Big- and little-endian support |
| Multiprocessing | Hardware-assisted SMP support |
| 封裝 | BGA (high-density, surface-mount) |
| 安裝類型 | Surface Mount |
| Process Technology | CMOS (process node not publicly disclosed) |
SC755BPX350LE bga (high-density, surface-mount) 腳位配置指南
SC755BPX350LE（bga (high-density, surface-mount) 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： SC755BPX350LE.
請參閱 資料表 以查看完整腳位配置。
典型應用
SC755BPX350LE 適用於 6 應用s: Industrial Networking Routers, Telecom Base Station Controllers, Aerospace Flight Control Modules, Military Command and Control Systems, High-End Embedded Computing Platforms, Legacy Industrial Control Systems.
Industrial Networking Routers
The SC755BPX350LE's 350 MHz Power Architecture core and 60x bus deliver the throughput required for Layer 3 routing and packet-forwarding workloads in industrial-grade routers. With hardware-assisted multiprocessing and a hardware MMU for full virtual memory, the device handles concurrent routing tables, ACL processing, and management-plane traffic without dropping frames. The BGA package's thermal characteristics suit fanless sealed enclosures used on factory floors, where the part's long life cycle reduces OEM qualification costs.
推薦
Telecom Base Station Controllers
Telecom base-station controllers demand deterministic real-time performance and high reliability, both of which the SC755BPX350LE delivers through the Power Architecture's predictable instruction timing. The 350 MHz core supports Layer 2 protocol termination, scheduling algorithms, and hardware-acceleration hand-off to DSP coprocessors. The MMU enables full OS support (VxWorks, Linux), while SMP capability allows controller scaling without board redesign. NRND status makes the part best suited for sustaining legacy telecom installations rather than greenfield builds.
推薦
Aerospace Flight Control Modules
Aerospace flight-control modules rely on the SC755BPX350LE's deterministic interrupt latency, hardware MMU, and extended-temperature BGA packaging. The 350 MHz Power Architecture core executes flight-control loops with consistent timing while the 60x/MPX bus interfaces to high-reliability memory and companion I/O controllers. The part's mature PowerPC software ecosystem (DO-178C certified VxWorks profiles) simplifies certification reuse, and its long product life cycle aligns with aerospace program durations that often exceed 15-20 years.
推薦
Military Command and Control Systems
Military command-and-control platforms depend on the SC755BPX350LE for hardened, deterministic processing under extended environmental conditions. The Power Architecture's proven toolchain support and the BGA package's robust thermal behavior suit ruggedized enclosures. SMP capability allows multi-CPU command-station configurations, while the MMU enables memory protection between classified and unclassified processing domains. The part's long life cycle and continued niche-distributor availability make it practical for sustainment-phase defense programs.
推薦
High-End Embedded Computing Platforms
High-end embedded computing platforms leverage the SC755BPX350LE for compute-intensive signal processing, image analysis, and industrial automation workloads. The 350 MHz Power Architecture core combined with the 60x bus delivers sustained throughput for real-time data acquisition. The MMU and full Power Architecture toolchain (GCC, Wind River, Green Hills) allow engineers to deploy Linux or RTOS environments quickly. NRND status is acceptable for sustaining mature platforms but new designs should evaluate active Power Architecture successors.
推薦
Legacy Industrial Control Systems
Legacy industrial control systems with multi-decade field deployments often specify the SC755BPX350LE for its proven reliability, deterministic timing, and ongoing niche-distributor availability. The Power Architecture core handles PID loops, motion-control algorithms, and HMI logic without RTOS overhead. The BGA package's thermal mass accommodates sealed cabinet environments, and the mature MPC755 firmware ecosystem reduces long-term maintenance risk. This application is the strongest fit for the part given its NRND status.
推薦
推薦產品摘要
工程參考資料，適用於 SC755BPX350LE — 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 | MPC755BPX350LE | MPC755BPX400LE | MPC755BPX300LE | MPC745BXX350LE | MPC750BPX350LE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | BGA | BGA - same | BGA - same | BGA - same | BGA - same family | BGA - same family |
| Core Frequency | 350 MHz | 350 MHz | 400 MHz | 300 MHz | 350 MHz | 350 MHz |
| Architecture | Power Architecture 32-bit | Power Architecture 32-bit | Power Architecture 32-bit | Power Architecture 32-bit | Power Architecture 32-bit | Power Architecture 32-bit |
| MMU | Yes | Yes | Yes | Yes | Yes | Yes |
| SMP Support | Yes | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
主要差異化特點
- Dual-frequency core/bus architecture (對比MPC755BPX400LE)
- Mature Power Architecture ecosystem with long product life (對比MPC750BPX350LE)
- NRND status with continued niche availability (對比Active Power Architecture successors)
設計說明
Estimated: At a 350 MHz core frequency with typical 2.0V core supply, the SC755BPX350LE can dissipate 4-6 W under sustained load. The BGA package's bottom-mounted thermal balls require a multi-layer PCB with a thermal via array directly beneath the die. Designers should target a junction-to-ambient thermal resistance (theta_JA) below 8 C/W by using 4+ PCB layers with continuous ground/power planes and a minimum 6x6 thermal via farm at 0.3 mm pitch.
The 60x/MPX bus operates at 360 MHz and demands controlled-impedance routing (typically 50 ohm single-ended, 100 ohm differential for clock). Trace lengths must be matched within 50 mils across the bus to preserve timing margins. Use 8+ layer stack-up with dedicated ground planes between signal layers; avoid routing 60x signals over split planes or noisy power regions.
Do not assume all MPC755 family members share an identical pinout. While the SC755BPX350LE and MPC755BPX350LE are functionally identical, other family derivatives (MPC745, MPC750) may differ in pin assignment, voltage domains, or peripheral mapping. Always cross-reference the exact device errata and BSDL files against the target PCB layout before PCB fabrication.
Place BGA decoupling capacitors on the opposite PCB side directly beneath the package's outer ball rows to minimize loop inductance. Use a mix of 0.1 uF MLCC for high-frequency decoupling and 10 uF bulk tantalum or ceramic capacitors for low-frequency transient suppression. Keep all decoupling within 5 mm of the respective power/ground balls.
合規資訊
Compliance information for the SC755BPX350LE was not present in the verified web data. BGA PowerPC parts of this era were generally lead-free, but verification against the lot-specific manufacturer certificate is recommended for production.
