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NXP Semiconductors MC68LC060BRC66
- Part No.:
- MC68LC060BRC66
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 206-BPGA
- Datasheet:
-
MC68LC060BRC66.pdf
- Description:
- IC MPU M680X0 66MHZ 206PGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,206
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Product details
Overview
MC68LC060BRC66 from Motorola is a 32-bit superscalar microprocessor without integrated FPU or MMU, operating at 66 MHz with 8 KB instruction and 8 KB data caches, supporting full M68000 instruction set compatibility for embedded control and industrial computing applications.
For engineers reviewing the MC68LC060BRC66 datasheet, MC68LC060BRC66 pinout, MC68LC060BRC66 application, or MC68LC060BRC66 equivalent, key selection criteria include cache coherency support, bus timing compliance with synchronous/asynchronous memory interfaces, absence of floating-point hardware, and MMU disable configuration for real-time deterministic execution.
Technical Context
The MC68LC060BRC66 implements dual integer execution pipelines (primary and secondary operand), address generation unit (AGU), and instruction fetch unit (IFU) with branch prediction logic. It supports burst transfers, cacheable/non-cacheable memory access modes, and IEEE 1149.1 JTAG debug interface.
Its memory subsystem includes separate 8 KB instruction and 8 KB data caches with writethrough and copyback modes, address translation cache (ATC), and configurable cache control register (CACR). Bus operation complies with asynchronous 32-bit multiplexed address/data protocol using transfer attribute signals (TT1/TT0, TM2–TM0, SIZ1/SIZ0).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Clock Frequency | 66 MHz - defines maximum instruction throughput and synchronous peripheral timing budget |
| Instruction Cache | 8 KB unified - reduces average instruction fetch latency in loop-intensive code |
| Data Cache | 8 KB unified - improves memory bandwidth efficiency for local variable access |
| Floating-Point Unit | Not integrated - requires external FPU or software emulation for FP math |
| Memory Management Unit | Disabled - eliminates TLB miss overhead and simplifies real-time interrupt response |
| Bus Interface | 32-bit multiplexed address/data - compatible with standard SRAM, DRAM, and peripheral controllers |
| JTAG Support | IEEE 1149.1 compliant - enables boundary-scan testing and on-chip debug pipe access |
Pinout & Package
MC68LC060BRC66 is housed in a 256-pin ceramic quad flat pack (CQFP) package with 0.65 mm lead pitch, designed for high-reliability industrial and aerospace environments requiring thermal stability and hermetic sealing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A31–A0 | Address Bus | 32-bit multiplexed address output during bus cycles; used for memory and I/O mapping |
| D31–D0 | Data Bus | 32-bit bidirectional data path; supports byte/word/long-word transfers via BS3–BS0 |
| R/W | Read/Write Control | Active-high during write cycles; determines direction of data bus traffic |
| TS | Transfer Start | Indicates start of bus cycle; synchronizes external memory controller setup timing |
| TA | Transfer Acknowledge | Slave device signal confirming valid data/address sampling; critical for asynchronous timing |
| CLK | Processor Clock Input | 66 MHz single-ended clock source driving internal pipeline stages and bus timing |
| CDIS | Cache Disable | Asynchronous active-low input disabling both instruction and data caches globally |
| MDIS | MMU Disable | Asynchronous active-low input forcing MMU bypass mode; required for MC68LC060 operation |
Key Features
| Feature | Design Value |
|---|---|
| Superscalar Dual-Pipeline Execution | Enables concurrent integer instruction dispatch up to two per cycle, increasing IPC in linear code sequences |
| Separate Instruction and Data Caches | Eliminates Harvard architecture conflicts; allows simultaneous fetch and store operations without bus contention |
| Configurable Cache Coherency Protocol | Supports cache push and store buffer management for multi-processor synchronization |
| IEEE 1149.1 JTAG Debug Interface | Provides non-intrusive visibility into pipeline state, register contents, and exception conditions during development |
| Asynchronous Bus Timing Compliance | Allows interfacing with legacy peripherals and memory devices without clock domain bridging logic |
Applications
| Industrial PLC Controller | Military Avionics Display Processor |
|---|---|
Use Scenario: Real-time ladder logic execution and I/O scanning in programmable logic controllers with deterministic scan cycle timing. IC Role / Device Role / Timing Role: Main CPU executing control firmware with guaranteed worst-case interrupt latency due to disabled MMU and FPU. Use Value: Elimination of MMU translation overhead ensures sub-microsecond response to emergency stop inputs and fieldbus interrupts. | Use Scenario: Raster-based graphics rendering and sensor fusion processing in cockpit display units with radiation-hardened requirements. IC Role / Device Role / Timing Role: Embedded processor managing display list generation and ARINC 429 interface timing via precise bus cycle control. Use Value: 66 MHz clock and burst transfer capability enable 60 Hz frame updates with <10 µs jitter for mission-critical HUD overlays. |
| Telecom Line Card Baseband Processor | Medical Imaging Subsystem Controller |
Use Scenario: Channel bonding and packet classification in TDM-over-IP gateways with strict jitter tolerance. IC Role / Device Role / Timing Role: Deterministic packet header parsing engine interfacing directly to FPGA-based framer logic via synchronous bus. Use Value: Cache coherency support and JTAG debug allow validation of time-critical interrupt service routines without runtime instrumentation. | Use Scenario: DICOM image preprocessing and modality-specific calibration sequencing in portable ultrasound systems. IC Role / Device Role / Timing Role: Dedicated controller managing ADC acquisition timing, DMA channel arbitration, and flash-based firmware updates. Use Value: Asynchronous bus interface enables direct connection to custom ASICs without glue logic, reducing BOM count and EMI emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit embedded microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68EC060RC66 | Removes both FPU and MMU; identical cache size and clock rating but lacks ATC and transparent translation registers | Suitable for simpler memory-mapped I/O systems without address translation needs | Select when absolute minimal silicon footprint and lowest power consumption are prioritized over cache coherency features |
| MC68060RC66 | Includes full FPU and MMU; same 66 MHz speed grade but higher power dissipation and thermal envelope | Required for floating-point intensive tasks like FFT-based signal analysis or virtual memory management | Select only if application mandates hardware-accelerated FP math or demand-paged OS support |
Compared with MC68LC060BRC66, the MC68EC060RC66 offers reduced feature set for cost-sensitive deterministic control, while the MC68060RC66 adds computational capability at the expense of real-time predictability and power efficiency.
Availability
MC68LC060BRC66 is available at Aetrix Electronics and suitable for industrial PLC controllers, military avionics display processors, and telecom line card baseband processors requiring stable component supply across extended product lifecycles.
Supply support for MC68LC060BRC66 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
Motorola was a U.S.-based semiconductor pioneer known for foundational microprocessor architectures and high-reliability analog/digital ICs before its semiconductor division became Freescale and later NXP.
The MC68LC060BRC66 belongs to the M68060 family designed for high-performance embedded control where deterministic timing, cache efficiency, and legacy M68K software compatibility outweigh floating-point or virtual memory requirements.
FAQ
What is the functional difference between MC68LC060BRC66 and MC68060RC66?
The MC68LC060BRC66 omits both the floating-point unit (FPU) and memory management unit (MMU), whereas the MC68060RC66 integrates both. This makes MC68LC060BRC66 suitable for real-time deterministic applications where FPU/MMU overhead would degrade interrupt latency or increase power consumption. The MC68LC060BRC66 retains identical superscalar execution pipelines, cache sizes, and bus interface logic as the MC68060RC66.
Does MC68LC060BRC66 support IEEE 1149.1 JTAG debugging?
Yes, MC68LC060BRC66 fully supports IEEE 1149.1 JTAG boundary-scan and debug pipe functionality via dedicated TCK, TMS, TDI, TDO, and TRST pins. This enables non-intrusive visibility into internal register states, pipeline stalls, and exception conditions during firmware development and field diagnostics without requiring additional debug hardware beyond standard JTAG probes.
What package type is used for MC68LC060BRC66?
MC68LC060BRC66 is packaged in a 256-pin ceramic quad flat pack (CQFP) with 0.65 mm lead pitch. This hermetically sealed package provides superior thermal stability and moisture resistance compared to plastic variants, making it appropriate for extended-temperature industrial, aerospace, and defense applications where long-term reliability under thermal cycling is critical.
Can MC68LC060BRC66 execute existing M68000-family software without modification?
Yes, MC68LC060BRC66 maintains full binary compatibility with the M68000 instruction set architecture, including all addressing modes and privileged instructions. Software compiled for earlier M68K processors runs natively on MC68LC060BRC66, though applications relying on FPU or MMU instructions will require either software emulation or conditional compilation to exclude those features.
What cache coherency mechanisms does MC68LC060BRC66 implement?
MC68LC060BRC66 implements cache coherency through its push buffer and store buffer architecture, supporting explicit cache maintenance operations (PFLUSH, PLPA) and transparent translation register (TTR) updates. These mechanisms ensure consistency between cached and main memory during multi-processor or DMA-driven I/O scenarios, enabling safe use in systems with shared memory resources without requiring external coherency logic.
MC68LC060BRC66 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 206-BPGA
- Series:
- M680x0
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- 68060
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 66MHz
- Co-Processors/DSP:
- -
- RAM Controllers:
- -
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- -
- Ethernet:
- -
- SATA:
- -
- USB:
- -
- Voltage - I/O:
- 3.3V
- Operating Temperature:
- -40°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 206-PGA (47.25x47.25)
- Additional Interfaces:
- SCI, SPI
MC68LC060BRC66 FAQ
1.How can I place an order for MC68LC060BRC66 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68LC060BRC66 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 MC68LC060BRC66 reliable?
The price and inventory of MC68LC060BRC66 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68LC060BRC66 is usually 5 days.
3.What payment methods are accepted for MC68LC060BRC66?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68LC060BRC66 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68LC060BRC66?
MC68LC060BRC66 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68LC060BRC66 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 MC68LC060BRC66?
For technical support, including MC68LC060BRC66 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68LC060BRC66 requirements.
6.How does Aetrix verify that MC68LC060BRC66 is sourced from the original manufacturer or authorized distributors?
All MC68LC060BRC66 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 MC68LC060BRC66 meets industry standards.
7.What is the process for return or replacement of MC68LC060BRC66?
All MC68LC060BRC66 units undergo pre-shipment inspection (PSI). If there is an issue with MC68LC060BRC66, 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 MC68LC060BRC66 part is unused and in its original packaging.
Return procedure for MC68LC060BRC66:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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