MPC8270VRMIBA - PowerQUICC II 266MHz MPU | NXP | Networking
MPN： MPC8270VRMIBA ✗ 停產MPC8270VRMIBA 概覽
A communications processor is a specialized microprocessor that combines a general-purpose CPU core with hardware accelerators for telecom and networking protocols. The PowerQUICC II architecture belongs to the broader family of embedded microprocessors (MPU -> microprocessor -> microcontroller unit -> semiconductor device), optimized for deterministic real-time packet handling rather than pure compute.
Key features include 32 KB of on-chip cache memory, a core voltage range of 1.45 V to 1.6 V, I/O at 3.3 V, HiPerMOS7 0.13-micron silicon process technology, and an operating temperature range of 0 C to 105 C. The integrated communications engine offloads HDLC, ATM, and Ethernet framing from the host CPU, enabling line-rate throughput without software intervention.
The MPC8270VRMIBA uses a Harvard-style bus architecture with separate instruction and data paths feeding the CPM (Communications Processor Module), allowing simultaneous CPU compute and DMA-driven peripheral servicing. The 516-ball PBGA provides ample signal headroom for the 32-bit address/data bus, three Fast Ethernet MACs, USB 1.1, and a PCI 2.2 interface.
Typical applications include DSLAM line cards, wireless base station control plane, router/switch control, industrial control gateways, and T1/E1 aggregation equipment. The wide integration reduces BOM and board area compared with discrete CPU-plus-assp designs.
When designing with this part, ensure proper power sequencing of 1.5 V core and 3.3 V I/O rails and provide adequate decoupling to the PBGA's inner-row balls. The part has been flagged End of Life on NXP's product page, so design teams should validate longevity supply before committing to new programs.
This page synthesizes distributor pricing, same-family and cross-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 MPC8270VRMIBA — 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： MPC8270VRMIBA （相同外形與佔位） — 差異在於 Process Technology, Package, Core Architecture, PCI Interface, RoHS Status.
MPC8270CVRMIBA
✅ 直接替換聯絡詢價
查看資料表 →MPC8270CZQMIBA
✅ 直接替換聯絡詢價
查看資料表 →MPC8270VVMIBA
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MPC8250AVRIHBC
✅ 直接替換聯絡詢價
查看資料表 →MPC8250ACZQIHBC
✅ 直接替換聯絡詢價
查看資料表 →MPC8270VRMIBA 最大額定值與電氣特性
| Core Architecture | PowerPC G2_LE, 32-bit |
| Core Frequency | 266 MHz |
| Series | PowerQUICC II (MPC82xx) |
| Number of Cores | 1 |
| On-Chip Cache | 32 KB |
| Core Voltage | 1.45 V to 1.6 V |
| I/O Voltage | 3.3 V |
| Process Technology | HiPerMOS7, 0.13 micron |
| 封裝 | 516-PBGA (27 x 27 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | 0 C to 105 C |
| Integrated Peripherals | PCI, USB, HDLC, 10/100 Ethernet |
| Communications Module | CPM with multi-channel HDLC and ATM |
| PCI Interface | PCI 2.2 compliant |
| USB Interface | USB 1.1 (function or host with external PHY) |
| Ethernet MACs | Up to 3 x 10/100 Ethernet |
MPC8270VRMIBA 516-pbga (27 x 27 mm) 腳位配置指南
MPC8270VRMIBA（516-pbga (27 x 27 mm) 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： MPC8270VRMIBA.
請參閱 資料表 以查看完整腳位配置。
典型應用
MPC8270VRMIBA 適用於 6 應用s: DSLAM Line Card Aggregation, Wireless Base Station Control Plane, Enterprise Router/Switch Controller, Industrial Control Gateway, T1/E1 Aggregation Multiplexer, Network Appliance Storage Controller.
DSLAM Line Card Aggregation
The MPC8270VRMIBA is well suited for DSLAM line card aggregation because its CPM (Communications Processor Module) provides up to 128 HDLC channels and multi-channel ATM SAR in hardware. The 266 MHz PowerPC G2_LE core runs control-plane and management tasks while the CPM offloads per-channel DMA, sustaining DS3/E3 line rates. The 516-PBGA package integrates PCI 2.2 to the backplane ASIC plus three 10/100 Ethernet MACs for uplink trunking, eliminating external bridge chips.
推薦
Wireless Base Station Control Plane
In wireless base station control, the MPC8270VRMIBA manages Layer 2 protocols with hardware-accelerated HDLC/ATM while running RTOS and OAM tasks on the G2_LE core. The CPM offloads framer and scheduler work that an MCU cannot sustain at 155 MHz ATM rates, freeing the 266 MHz core for call processing and timing. Its 3.3 V I/O and 1.5 V core rails integrate cleanly with standard telecom power architectures (e.g., -48 V isolated supplies), and the PBGA thermal envelope supports 0 to 105 C operation in controlled indoor cabinets.
推薦
Enterprise Router/Switch Controller
For branch-office routers, the MPC8270VRMIBA provides routing control plus PCI-to-PCI bridging using its 32-bit PowerPC core, three Fast Ethernet MACs, and PCI 2.2 host bridge. The 266 MHz frequency sustains Cisco-style IOS-XE or Linux-based routing stacks with routing-table lookup offloaded to TCAM ASICs over the PCI bus. The integrated USB 1.1 host enables local diagnostics and configuration and the CPM HDLC handles legacy serial WAN uplinks.
推薦
Industrial Control Gateway
In factory automation gateways, the MPC8270VRMIBA bridges industrial fieldbuses to Ethernet using its trio of 10/100 MACs and HDLC channels for serial protocols (Modbus, Profibus over RS-485). The 516-PBGA industrial temperature variants support factory ambient, and the deterministic CPM latency handles real-time control messaging. Software stacks run on a hosted RTOS with Ethernet/IP and Profinet compatibility.
推薦
T1/E1 Aggregation Multiplexer
The MPC8270VRMIBA shines in T1/E1 multiplexers because its CPM provides per-channel HDLC with hardware AAL1/AAL2 segmentation, freeing the host CPU from bit-banging 24/32-channel TDM streams. The PowerPC G2_LE at 266 MHz runs management plane OAM and SNMP stacks while the CPM handles 256+ HDLC channels. Its 3.3 V I/O connects directly to standard line-interface units and T1/E1 framer ASICs over the 32-bit local bus.
推薦
Network Appliance Storage Controller
For small NAS appliances and iSCSI targets, the MPC8270VRMIBA runs the storage stack over its integrated PCI bus and three Ethernet MACs, while the CPM handles TCP/IP checksum offload and HDLC for replication links. The 32 KB on-chip cache sustains sequential read/write streams when paired with DDR-like SDRAM via external bridge, and the 516-PBGA package simplifies multi-layer PCB layout for fanless enclosures.
推薦
推薦產品摘要
工程參考資料，適用於 MPC8270VRMIBA — 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 | MPC8270CVRMIBA | MPC8270CZQMIBA | MPC8270VVMIBA | MPC8250AVRIHBC | MPC8250ACZQIHBC |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 516-PBGA (27x27) | 516-PBGA (27x27) | 516-PBGA (27x27) | 516-PBGA (27x27) | PBGA (different size) | PBGA (different size) |
| Core | PowerPC G2_LE 266 MHz | PowerPC G2_LE 266 MHz | PowerPC G2_LE 266 MHz | PowerPC G2_LE 266 MHz | PowerPC G2_LE 200 MHz | PowerPC G2_LE 200 MHz |
| Core Voltage | 1.45 V to 1.6 V | 1.45 V to 1.6 V | 1.45 V to 1.6 V | 1.45 V to 1.6 V | 1.45 V to 1.6 V | 1.45 V to 1.6 V |
| Integrated Peripherals | PCI, USB, HDLC, 3x 10/100 MAC | Same | Same | Same | Subset | Subset |
| Operating Temperature | 0 C to 105 C | 0 C to 105 C | 0 C to 105 C | -40 C to 105 C (extended) | 0 C to 105 C | 0 C to 105 C |
| Lead-Free Designator | No (leaded R suffix) | No | Yes (Z designator) | No (extended temp) | No | Yes (Z designator) |
| Lifecycle Status | End of Life | End of Life | End of Life | End of Life | End of Life | End of Life |
主要差異化特點
- True 266 MHz G2_LE core with hardware CPM offload (對比MPC8250AVRIHBC)
- 516-PBGA (27 x 27) maximum I/O density for this family (對比MPC8270CVRMIBA)
- Drop-in compatible with industrial temperature MPC8270VVMIBA (對比MPC8270VVMIBA)
設計說明
The MPC8270VRMIBA requires separate 1.5 V core (1.45 V to 1.6 V range) and 3.3 V I/O rails with sequencing: power the core before I/O to avoid latch-up. Place low-ESR ceramic decoupling (e.g., 22 uF bulk plus 0.1 uF high-frequency bypass) within 5 mm of every supply pin pair. According to the NXP hardware design guide for PowerQUICC II, a soft-start ramp of 1 ms prevents inrush on the host supply.
The 516-PBGA (27x27) has high thermal mass; follow JEDEC JESD51 test methodology and use the package's exposed thermal balls for a thermal via array into inner planes. Estimated: at ambient 70 C and 1.0 W dissipation (typical for 266 MHz active), junction-to-ambient theta_JA around 18 C/W results in roughly 18 C rise; verify against the silicon-specific thermal model in the datasheet before deployment in sealed enclosures.
Use a minimum 6-layer stack-up with continuous reference planes for the 32-bit local bus and DDR SDRAM connections. Place micro-vias-in-pad (8 mil laser vias) under the inner-row signal balls to break out the dense BGA pitch without dog-bone fanout. Per IPC-7093 BGA guidelines, return all high-speed signals within 2 layers of their reference plane to avoid crosstalk on the 100 MHz+ bus.
Do not assume the RMIBA suffix indicates lead-free - that 'C' (or 'Z') prefix is the lead-free/RoHS marker in the MPC8270 family. Mixing leaded and lead-free BGA balls on a single board violates JEDEC J-STD-020 reflow profiles. Always match the JTAG BSDL against the silicon revision before boundary-scan test during production bring-up.
合規資訊
Compliance statuses not in verified distributor data; the VRMIBA suffix denotes a leaded (non-RoHS) variant historically. For RoHS-only programs use the MPC8270CVRMIBA (no Z) or MPC8270CZQMIBA (lead-free Z designator) sibling parts.
