MPC857TZQ80B - MPC8xx PowerQUICC 80MHz MPU | NXP | Industrial
N.º da peça: MPC857TZQ80B ✗ Fim de vidaMPC857TZQ80B Visão geral
A PowerQUICC MPU is a family of PowerPC-based microprocessors originally designed by Motorola (later Freescale, now NXP) that combine a high-performance CPU core with integrated peripherals such as memory controllers, serial communications controllers, and timers, specifically optimized for embedded networking, industrial control, and telecommunications equipment.
Key features include a single core 32-bit PowerPC architecture, 80 MHz operating frequency, 3.3 V I/O voltage, on-chip instruction and data caches, dual 10/100 Ethernet MAC support via the FCC/FEC, multiple serial communication controllers, and integrated DRAM controller. The part is supplied in a tray packaging format and is specified for industrial temperature grades.
Architecturally, the MPC857T integrates a PowerPC integer unit with separate instruction and data MMUs, a system interface unit that glues external SDRAM, ROM, and peripheral buses together, plus dedicated peripheral channels including SCCs, SMCs, an SPI, and a PCMCIA controller. This integration historically enabled designers to build complete networking routers, bridges, and protocol converters on a single chip with minimal external glue logic.
Typical applications include industrial routers and protocol converters, telecom line cards, embedded control nodes, and legacy PowerQUICC-based designs. Designers typically pair this MPU with synchronous DRAM, Flash memory, and PHY transceivers connected through the on-chip Ethernet MACs.
When designing with this part, ensure the 3.3 V power rail is well decoupled close to the BGA balls and that the JTAG chain is correctly ordered for boundary-scan access during board bring-up. Confirm thermal paths since the 357-BGA package requires a properly designed PCB land pattern and via array for reliability.
This page synthesizes distributor stock data, parametric proximity, drop-in same-package alternatives, and practical thermal/PCB notes that are not collected in the manufacturer datasheet.
Alternativas drop-in para MPC857TZQ80B — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MPC857TZQ80B (mesmo formato e footprint) — diferindo em Core Architecture, Core Frequency, Series.
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasMPC857TZQ80B Classificações máximas e características elétricas
| Processor Type | MPC8xx PowerQUICC, 1 Core, 32-Bit |
| Core Architecture | PowerPC |
| Core Frequency | 80 MHz |
| Supply Voltage (I/O) | 3.3 V |
| Number of Cores | 1 |
| Largura do barramento de dados | 32-Bit |
| Encapsulamento / Caixa | 357-PBGA (25x25 mm) |
| Packaging | Tray |
| Lead Free Status | Contains Lead |
| Status RoHS | RoHS (per distributor listing) |
| Series | PowerQUICC, MPC8xx |
| Terminal Form | Ball |
| Number of Terminals | 357 |
| Tipo de montagem | Surface Mount |
| Temperature Grade | Other (industrial) |
Guia de Configuração de Pinos do MPC857TZQ80B 357-pbga (25x25 mm)
Configuração de pinos para MPC857TZQ80B (pacote 357-pbga (25x25 mm)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para MPC857TZQ80B.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MPC857TZQ80B é adequado para 6 aplicaçãos: Industrial Router / Protocol Converter, Telecom Line Card / Access Node, Embedded Industrial Control Node, Legacy PowerQUICC Board Replacement / Field Service, Print Engine / Imaging Controller, Military / Aerospace Embedded Subsystem (legacy).
Industrial Router / Protocol Converter
The MPC857TZQ80B integrates the PowerPC core, dual Ethernet MACs via the FCC, and multiple SCCs - all of which the MPC8xx family was engineered around. In an industrial router, the part terminates Ethernet on the LAN side, converts to RS-232/RS-485 on the field side via SCCs, and runs the routing stack on the 80 MHz core. The on-chip DRAM controller and PCMCIA interface allow direct attachment of compact-flash mass storage for firmware and configuration backup, eliminating an external memory bridge.
Recomendado
Telecom Line Card / Access Node
Historically, the MPC857T was deployed in telecom line cards where its HDLC controllers (via SCCs) and fast Ethernet MAC handled T1/E1 and IP traffic simultaneously. The 3.3 V I/O and industrial temperature grade let the part sit on the same board as framer ICs and line drivers without level shifting. The 32-bit PowerPC core processes signaling and routing tables at 80 MHz, sufficient for low- to mid-density DSLAM line cards where newer QorIQ parts may be over-spec.
Recomendado
Embedded Industrial Control Node
In factory-floor controllers the MPC857TZQ80B serves as the master CPU, running a real-time OS and managing serial field-bus interfaces via the SCC/SPI controllers. The 80 MHz PowerPC core handles deterministic loop times well within sub-millisecond windows. The 357-PBGA package provides adequate thermal dissipation when paired with a properly designed PCB ground pad and via array, allowing fanless operation in sealed enclosures.
Recomendado
Legacy PowerQUICC Board Replacement / Field Service
Service organizations maintaining long-lifecycle MPC8xx-based systems use the MPC857TZQ80B as a form-fit-function replacement when a board-level failure occurs. Because the device shares the same 357-BGA footprint with other MPC857T variants, stocking a single replacement covers a fleet of legacy routers and converters. NXP and Freescale distribution channels support these spare-part purchases even though the part is NRD.
Recomendado
Print Engine / Imaging Controller
The MPC857TZQ80B's combination of a 32-bit PowerPC core, on-chip peripherals, and PCMCIA controller made it a popular choice for office print engines where it drives the page-description language interpreter, the laser modulator, and the network interface. The 80 MHz clock rate handles 600 dpi rendering without an external accelerator. Modern designs have moved to integrated SoCs, but legacy print engines continue to use this part in service fleets.
Recomendado
Military / Aerospace Embedded Subsystem (legacy)
Some defense and aerospace programs that originated in the early 2000s standardized on MPC8xx parts including the MPC857T for line-replaceable units requiring proven software baselines. The industrial temperature grade and long-term availability through authorized brokers make it practical for sustainment programs. New defense designs typically select newer NXP QorIQ layerscape processors, but legacy LRUs continue to source this MPN.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MPC857TZQ80B — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MPC857VR80B | MPC857TVR80B | MPC855TVR80D4 | MPC860DEVR80D4 | MPC850DEZQ50BU |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 357-PBGA (25x25) | 357-PBGA (25x25) - same | 357-PBGA (25x25) - same | 357-PBGA (25x25) - same | 357-PBGA (25x25) - same | 357-PBGA (25x25) - same |
| Core Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 50 MHz (-37.5%) |
| Core Architecture | PowerPC, 32-bit, 1 core | PowerPC, 32-bit, 1 core | PowerPC, 32-bit, 1 core | PowerPC, 32-bit, 1 core | PowerPC, 32-bit, 1 core | PowerPC, 32-bit, 1 core |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Peripheral Set | Full MPC857T (FCC, SCCs, PCMCIA) | Same MPC857T peripheral set | Same MPC857T peripheral set | Reduced MPC855T peripheral set | Enhanced MPC860 (HDFC, FCC) | Reduced MPC850 peripheral set |
| Packaging | Tray | Tray | Tape & Reel | Tray | Tray | Tray |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
Principais diferenciais
- Drop-in pin-compatible across the MPC857T speed grade family (vs MPC857VR80B / MPC857TVR80B)
- Lower peripheral set than the MPC860 family (vs MPC860DEVR80D4)
- Higher core clock than the MPC850 family (vs MPC850DEZQ50BU)
Notas de projeto
Estimated: at 3.3 V supply and 80 MHz core, the MPC857T draws approximately 0.7-1.0 W typical power in industrial operation. The 357-PBGA package dissipates this via the internal ground balls and PCB copper; an exposed central pad area plus a via array on inner layers is essential for keeping the junction below 125 C. Designers should measure the board with a thermal probe during worst-case bring-up before sealing the enclosure.
Use a 4- or 6-layer PCB with a continuous ground plane directly under the BGA to provide both return-path reference and thermal spreading. BGA fanout should use dog-bone or via-in-pad patterns matched to the 1.27 mm typical ball pitch. Place SDRAM and Flash as close as possible to the SIU bus balls to minimize trace length and avoid impedance discontinuities on the 32-bit data bus.
Because the MPC857TZQ80B is NRD, counterfeit risk from unauthorized brokers is elevated. Always procure through NXP authorized distributors or with a full C-of-C traceable to the original wafer lot. Cross-check the top marking against the NXP product marking convention to detect remarked parts. Avoid parts with lead-bearing ball finish if your assembly line is lead-free reflow only.
Informações de conformidade
Lead-free status listed as 'Contains Lead' in distributor data - ball finish uses lead-bearing solder per NXP legacy product marking. RoHS compliance varies by sub-variant; confirm with order code. AEC-Q100 not applicable - this is an industrial MPU, not an automotive-qualified part.
