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NXP Semiconductors MPC870ZT66
- Part No.:
- MPC870ZT66
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 256-BBGA
- Datasheet:
-
MPC870ZT66.pdf
- Description:
- IC MPU MPC8XX 66MHZ 256BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,418
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Product details
Overview
MPC870ZT66 from Freescale Semiconductor is a 32-bit Power Architecture™-based integrated microprocessor with dual Fast Ethernet controllers, 8-Kbyte instruction and data caches, and 1.8-V core / 3.3-V I/O operation - designed for embedded networking and communications controller applications requiring deterministic real-time packet processing.
For engineers reviewing the MPC870ZT66 datasheet, MPC870ZT66 pinout, MPC870ZT66 application, or MPC870ZT66 equivalent, this page delivers verified technical context on its CPM-based serial subsystems, IEEE 802.3-compliant FEC timing, USB 2.0 full-speed host/function capability, and mandatory reset configuration requirements per HRCW and SIUMCR registers.
Technical Context
The MPC870ZT66 integrates an MPC8xx core running at up to 66 MHz in 1:1 bus mode, paired with a Communications Processor Module (CPM) containing 8-Kbyte dual-port RAM and dedicated RISC controller for offloading serial protocol handling. Its system integration unit provides IEEE 1149.1 JTAG debug, periodic interrupt timer, and clock synthesizer with VDDSYN supply.
It supports two independent 10/100 Mbps Fast Ethernet controllers compliant with IEEE Std. 802.3®, interfacing via MII or RMII; USB 2.0 full-/low-speed operation in host, function, or loopback diagnostic modes; and four baud-rate generators supporting dynamic reconfiguration during runtime.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Frequency | 66 MHz (1:1 bus mode); enables synchronous CPU/bus timing without frequency division overhead |
| Cache Configuration | 8-Kbyte instruction cache + 8-Kbyte data cache; both two-way set-associative with LRU replacement and physical addressing |
| FEC Throughput | Two 10/100 Mbps IEEE 802.3 Ethernet controllers; support MII/RMII interfaces for PHY connectivity and full-duplex operation |
| USB Interface | USB 2.0 full-/low-speed compatible; supports host, function, and diagnostic loopback modes with CRC16/NRZI/bit-stuffing |
| Power Supply | 1.8-V core (VDDL), 3.3-V I/O (VDDH), 1.8-V PLL (VDDSYN); differential tolerance ≤100 mV between VDDL and VDDSYN |
| Thermal Limit | Junction temperature max 95°C (standard grade); requires RθJA ≤43°C/W on single-layer board under natural convection |
| Package | 256-pin PBGA; supports glueless interface to DRAM, SRAM, Flash, and EPROM with dynamic bus sizing (8/16/32-bit) |
Pinout & Package
The MPC870ZT66 is housed in a 256-ball plastic ball grid array (PBGA) package with 1.27-mm pitch, optimized for thermal dissipation and high-density PCB routing in networking edge devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HRESET | Hardware Reset Input | Active-low asynchronous reset; must be held low ≥100 ns after power stabilization before release |
| SRESET | Software Reset Output | Drives external logic upon internal software-initiated reset; open-drain capable up to 8.9 mA sink |
| EXTAL | Crystal Oscillator Input | Accepts fundamental-mode crystal (typically 50 MHz); VIHC = 0.7×VDDH to VDDH; drives internal PLL |
| CLKOUT | Clock Output | Provides buffered system clock; VOH ≥2.4 V at IOH = –2.0 mA; used for trace/debug synchronization |
| MII1_TXEN | FEC1 Transmit Enable | Controls MII transmit strobe; 5-V tolerant input; part of 10/100 Mbps Ethernet MAC signaling group |
| PA[0:15] | Port A General-Purpose I/O | Configurable as GPIO, UART, or SCC signals; 5-V tolerant; PADIR/PAPAR registers define direction/assignment at boot |
Key Features
| Feature | Design Value |
|---|---|
| CPM Offload Engine | Dedicated 32-bit RISC controller with 8-Kbyte dual-port RAM handles HDLC, UART, IrDA, and BISYNC protocols independently of main CPU |
| FEC Hardware Acceleration | Integrated media access control with MII/RMII support, automatic CRC generation/checking, and full-duplex flow control |
| USB Dual-Role Capability | Single USB PHY supports simultaneous host and function endpoints; includes flexible buffer management and automatic retransmission on TX error |
| Memory Controller Flexibility | Eight-bank DRAM controller with programmable wait states (0–30), variable block sizes (32 KB–256 MB), and boot CS options (8/16/32-bit) |
| Debug & Emulation Support | IEEE 1149.1 JTAG TAP, eight hardware comparators (instruction/data address/data value), and advanced on-chip emulation mode |
Applications
| Industrial Ethernet Gateway | DSL/Cable Modem Controller |
|---|---|
|
Use Scenario: Aggregating fieldbus data (Modbus RTU, CANopen) into TCP/IP over 10/100 Mbps Ethernet in factory automation cabinets. IC Role / Device Role / Timing Role: MPC870ZT66 acts as real-time protocol gateway controller, managing dual FECs for redundant LAN links while running CPM-offloaded serial stacks. Use Value: Deterministic latency under 50 µs for Modbus-to-Ethernet bridging due to cache-coherent MMU and dedicated CPM DMA channels. |
Use Scenario: Serving as central control processor in residential broadband modems, coordinating ADSL line drivers, DOCSIS MAC, and home LAN switching. IC Role / Device Role / Timing Role: MPC870ZT66 executes Linux-based network stack while delegating USB host duties (for Wi-Fi dongles) and FEC packet scheduling to hardware accelerators. Use Value: Concurrent USB 2.0 full-speed host operation and dual-FEC traffic handling without CPU saturation at 66 MHz core frequency. |
| Network Attached Storage (NAS) Bridge | Secure Remote Terminal Unit (RTU) |
|
Use Scenario: Bridging USB mass storage devices (external HDDs) to Ethernet LAN in embedded NAS appliances with minimal external logic. IC Role / Device Role / Timing Role: MPC870ZT66 operates in USB host mode to enumerate and stream data from USB 2.0 peripherals while routing packets via FEC to Gigabit-capable switch ICs. Use Value: Integrated USB host controller eliminates need for separate USB hub IC; supports bulk transfer descriptors with automatic CRC16 checking. |
Use Scenario: Deployed in oil/gas SCADA remote terminal units requiring secure firmware updates and encrypted telemetry over cellular backhaul. IC Role / Device Role / Timing Role: MPC870ZT66 manages watchdog-timed serial telemetry (RS-485) and initiates TLS handshakes via software crypto libraries leveraging its MMU-protected memory spaces. Use Value: 32-entry TLB with 4/16/512 KB page size support enables secure partitioning of encrypted code, telemetry buffers, and OTA update staging areas. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded communications processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPC875ZT66 | Includes hardware security engine (AESU/DEU/MDEU); identical core, cache, FEC, and USB specs | Required for IPsec/SSL/TLS acceleration in VPN gateways; MPC870ZT66 lacks crypto accelerators | Select MPC875ZT66 when cryptographic offload is mandatory; MPC870ZT66 suffices for non-encrypted control-plane applications |
| MPC885ZQ66D | Higher core speed (66 MHz vs. 66 MHz same, but supports 133 MHz in 2:1 mode); adds PCI interface and enhanced USB 2.0 host controller | Targeted at higher-throughput edge routers; MPC870ZT66 lacks PCI and has simpler USB descriptor handling | Choose MPC885ZQ66D for PCI-connected PHYs or multi-device USB topologies; MPC870ZT66 fits cost-sensitive, fixed-function designs |
Compared with MPC875ZT66, MPC870ZT66 removes security acceleration but retains identical networking peripherals and memory subsystem - making it optimal for non-encrypted industrial gateways. Versus MPC885ZQ66D, MPC870ZT66 trades PCI and advanced USB for lower BOM cost and simpler layout, suited to fixed-configuration edge nodes.
Availability
MPC870ZT66 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, DSL/cable modem controllers, network-attached storage bridges, and secure remote terminal units requiring stable component supply across extended product lifecycles.
Supply support for MPC870ZT66 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Freescale Semiconductor (now part of NXP Semiconductors) is a fabless semiconductor company specializing in embedded processors, analog, and connectivity solutions for automotive, industrial, and networking markets.
The MPC870ZT66 belongs to the PowerQUICC™ family - designed specifically for cost-effective, low-power communications processors targeting DSL, cable, and industrial Ethernet infrastructure where integrated FEC, USB, and CPM offload deliver deterministic real-time performance.
FAQ
What is the maximum operating frequency of the MPC870ZT66 core?
The MPC870ZT66 core operates at a maximum frequency of 66 MHz in 1:1 bus mode. It does not support 133 MHz operation - that capability is reserved for the MPC875 variant in 2:1 mode. This 66 MHz rating ensures stable timing margins for external memory interfaces and serial peripherals without requiring complex clock domain crossing logic in the design.
Does the MPC870ZT66 include a hardware security engine?
No, the MPC870ZT66 does not include a hardware security engine. Unlike the MPC875ZT66, which integrates AESU, DEU, and MDEU crypto accelerators, the MPC870ZT66 omits this module entirely. Encryption tasks must be performed in software using its MMU-protected memory regions and general-purpose registers - suitable for lightweight authentication but not high-throughput IPsec or TLS.
How many Ethernet controllers does the MPC870ZT66 support?
The MPC870ZT66 supports two independent Fast Ethernet controllers compliant with IEEE Std. 802.3® at 10/100 Mbps. Both controllers interface via MII or RMII physical layers and share no hardware resources - enabling true dual-LAN operation for redundancy or segmentation in industrial gateways and NAS bridges.
What package type is used for the MPC870ZT66?
The MPC870ZT66 uses a 256-pin plastic ball grid array (PBGA) package with 1.27-mm pitch. This package supports thermal dissipation up to 43°C/W under natural convection on single-layer boards and provides glueless connectivity to DRAM, SRAM, and Flash memory through its eight-bank memory controller.
What are the mandatory reset configuration requirements for the MPC870ZT66?
The MPC870ZT66 requires mandatory register programming after reset: HRCW[DBGC] and SIUMCR[DBGC] must both be set to binary X1; MBMR[GPLB4DIS] = 0; and PAPAR/PADIR/PBPAR/PBDIR/PCPAR/PCDIR bits must match values in Table 7 of the hardware spec. Failure to configure these causes undefined boot behavior or peripheral malfunction.
MPC870ZT66 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 256-BBGA
- Series:
- MPC8xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- MPC8xx
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 66MHz
- Co-Processors/DSP:
- Communications; CPM
- RAM Controllers:
- DRAM
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- -
- Ethernet:
- 10/100Mbps (2)
- SATA:
- -
- USB:
- USB 2.0 (1)
- Voltage - I/O:
- 3.3V
- Operating Temperature:
- 0°C ~ 95°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 256-PBGA (23x23)
- Additional Interfaces:
- I2C, PCMCIA, SPI, TDM, UART
MPC870ZT66 FAQ
1.How can I place an order for MPC870ZT66 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPC870ZT66 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MPC870ZT66 reliable?
The price and inventory of MPC870ZT66 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPC870ZT66 is usually 5 days.
3.What payment methods are accepted for MPC870ZT66?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPC870ZT66 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPC870ZT66?
MPC870ZT66 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPC870ZT66 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MPC870ZT66?
For technical support, including MPC870ZT66 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPC870ZT66 requirements.
6.How does Aetrix verify that MPC870ZT66 is sourced from the original manufacturer or authorized distributors?
All MPC870ZT66 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MPC870ZT66 meets industry standards.
7.What is the process for return or replacement of MPC870ZT66?
All MPC870ZT66 units undergo pre-shipment inspection (PSI). If there is an issue with MPC870ZT66, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MPC870ZT66 part is unused and in its original packaging.
Return procedure for MPC870ZT66:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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