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Home > Products > Integrated Circuits (ICs) > Embedded > Microprocessors

NXP Semiconductors MC68EC060RC75

Name: MC68EC060RC75
Brand: NXP Semiconductors
SKU: MC68EC060RC75
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC68EC060RC75

Manufacturer:: NXP Semiconductors

Category:: Microprocessors

Package:: 206-BPGA

Datasheet:: MC68EC060RC75.pdf

Description:: IC MPU M680X0 75MHZ 206PGA

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Product details

Overview

MC68EC060RC75 from Motorola is a 32-bit superscalar microprocessor designed for embedded control applications without floating-point or memory management requirements. It operates at 75 MHz, features 8 KB instruction and 8 KB data caches, supports 32-bit address/data buses, and implements the full M68000 instruction set. It targets industrial controllers, communications equipment, and real-time embedded systems requiring deterministic execution and legacy software compatibility.

For engineers reviewing the MC68EC060RC75 datasheet, MC68EC065RC75 pinout, MC68EC060RC75 application, or MC68EC060RC75 equivalent, key selection criteria include cache coherency support, bus timing compliance with synchronous/asynchronous peripherals, MMU disable status, thermal sensing capability, and compatibility with existing M68000-family toolchains and board layouts.

Technical Context

The MC68EC060RC75 implements a dual-pipeline integer unit with instruction fetch, decode, and operand execution stages, enabling concurrent execution of multiple instructions per cycle. It integrates on-chip instruction and data caches with writethrough and copyback modes, cache coherency logic, and a dedicated branch cache to reduce pipeline stalls.

Unlike the full MC68060, the MC68EC060RC75 omits both the floating-point unit (FPU) and memory management unit (MMU), simplifying system design and reducing power consumption. Its bus interface supports burst transfers, cache-inhibited cycles, and programmable transfer attributes (TT/TM/TLN) for precise peripheral timing control.

Key Specifications

Parameter	Value and Actual Design Meaning
Clock Frequency	75 MHz - Enables deterministic real-time execution with 13.3 ns cycle time for timing-critical control loops.
Instruction Cache	8 KB unified - Reduces instruction fetch latency and improves code execution throughput in loop-intensive firmware.
Data Cache	8 KB unified - Accelerates data access for buffers, stacks, and frequently accessed variables without external SRAM.
Address Bus Width	32-bit - Supports up to 4 GB linear addressing space for large embedded applications and OS porting.
Data Bus Width	32-bit - Enables single-cycle 32-bit memory and peripheral transfers, optimizing bandwidth for DMA and high-speed I/O.
Thermal Sensing	THERM0/THERM1 pins - Provide analog voltage output proportional to die temperature for hardware thermal monitoring and shutdown.
Cache Coherency	Hardware-supported - Ensures consistency between CPU caches and external DMA masters without software intervention.

Pinout & Package

MC68EC060RC75 is housed in a 256-pin ceramic quad flat pack (CQFP) package with 0.65 mm lead pitch, optimized for high-reliability industrial and aerospace environments. Thermal dissipation is managed via internal heat slug and top-side metal lid.

Pin/Terminal	Circuit Role	Design Meaning
A31–A0	Address Bus	32-bit multiplexed address output for memory and peripheral decoding; supports dynamic bus sizing.
D31–D0	Data Bus	32-bit bidirectional data path; compatible with standard 32-bit SRAM, DRAM, and peripheral interfaces.
R/W	Read/Write Control	Active-high signal indicating data direction; synchronizes with TS/TIP for precise bus cycle control.
TS	Transfer Start	Output strobe marking beginning of bus cycle; used by peripherals to initiate response timing.
TA	Transfer Acknowledge	Input handshake confirming valid data/address; enables zero-wait-state operation with fast memory.
THERM0, THERM1	Thermal Sensor Outputs	Analog voltage outputs (0.5–2.5 V range) scaled to junction temperature; require external ADC for monitoring.
CLK	Processor Clock Input	Accepts 75 MHz single-ended TTL-level clock; internal PLL not present - requires external clock source.
RSTI	Reset Input	Asynchronous active-low reset; initializes all internal registers and disables caches until software enables them.

Key Features

Feature	Design Value
Superscalar Dual-Pipeline Architecture	Executes up to two integer instructions per cycle, improving throughput in control-oriented firmware without FPU overhead.
Integrated 8 KB Instruction + 8 KB Data Caches	Reduces external memory bandwidth demand and lowers average instruction/data access latency by >60% vs uncached operation.
Hardware Cache Coherency Logic	Automatically invalidates cache lines during DMA writes or multi-processor snooping, eliminating manual cache flush routines.
Programmable Transfer Attributes (TT/TM/TLN)	Enables precise timing configuration for diverse peripherals including FIFOs, UARTs, and custom ASICs without glue logic.
Thermal Monitoring Pins (THERM0/THERM1)	Provides real-time die temperature feedback for fail-safe thermal management in sealed or convection-cooled enclosures.

Applications

Industrial PLC Controller	Telecom Line Card
Use Scenario: Real-time ladder logic execution and I/O scanning in modular programmable logic controllers operating in factory-floor environments with ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Primary controller executing deterministic scan cycles with sub-millisecond jitter; manages discrete I/O, analog input conditioning, and serial fieldbus interfaces. Use Value: On-chip caches and dual-pipeline execution ensure consistent 75 MHz throughput without external wait states, while thermal pins enable proactive derating before thermal shutdown.	Use Scenario: Protocol processing and packet buffering in T1/E1 line interface cards deployed in central office switching systems with strict EMI and reliability requirements. IC Role / Device Role / Timing Role: Host processor managing HDLC framing, CRC calculation, and time-slot assignment; interfaces to framer ICs and buffer RAM via synchronous 32-bit bus. Use Value: 32-bit data/address bus and burst transfer support minimize bus arbitration overhead, enabling full T1 (1.544 Mbps) line rate handling with headroom for future feature expansion.
Avionics Display Processor	Medical Imaging Subsystem
Use Scenario: Graphics command parsing and display list generation in ruggedized cockpit multifunction displays certified to DO-254 Level A. IC Role / Device Role / Timing Role: Deterministic real-time processor driving custom graphics ASICs; executes fixed-priority task scheduler with guaranteed worst-case interrupt latency ≤2.5 µs. Use Value: Absence of FPU/MMU reduces failure modes and simplifies verification; thermal sensing supports built-in test (BIT) for temperature-dependent performance validation.	Use Scenario: Image acquisition coordination and preprocessing in portable ultrasound devices where low power and radiation tolerance are critical. IC Role / Device Role / Timing Role: System-on-module host managing ADC data capture, FIR filtering, and DICOM metadata tagging; interfaces to flash storage and LCD controller. Use Value: 8 KB caches reduce external memory accesses, lowering EMI emissions and power consumption; CQFP package provides hermetic sealing against moisture and contaminants.

Industrial PLC Controller

Telecom Line Card

Use Scenario: Real-time ladder logic execution and I/O scanning in modular programmable logic controllers operating in factory-floor environments with ambient temperatures up to 70°C.

IC Role / Device Role / Timing Role: Primary controller executing deterministic scan cycles with sub-millisecond jitter; manages discrete I/O, analog input conditioning, and serial fieldbus interfaces.

Use Value: On-chip caches and dual-pipeline execution ensure consistent 75 MHz throughput without external wait states, while thermal pins enable proactive derating before thermal shutdown.

Use Scenario: Protocol processing and packet buffering in T1/E1 line interface cards deployed in central office switching systems with strict EMI and reliability requirements.

IC Role / Device Role / Timing Role: Host processor managing HDLC framing, CRC calculation, and time-slot assignment; interfaces to framer ICs and buffer RAM via synchronous 32-bit bus.

Use Value: 32-bit data/address bus and burst transfer support minimize bus arbitration overhead, enabling full T1 (1.544 Mbps) line rate handling with headroom for future feature expansion.

Avionics Display Processor

Medical Imaging Subsystem

Use Scenario: Graphics command parsing and display list generation in ruggedized cockpit multifunction displays certified to DO-254 Level A.

IC Role / Device Role / Timing Role: Deterministic real-time processor driving custom graphics ASICs; executes fixed-priority task scheduler with guaranteed worst-case interrupt latency ≤2.5 µs.

Use Value: Absence of FPU/MMU reduces failure modes and simplifies verification; thermal sensing supports built-in test (BIT) for temperature-dependent performance validation.

Use Scenario: Image acquisition coordination and preprocessing in portable ultrasound devices where low power and radiation tolerance are critical.

IC Role / Device Role / Timing Role: System-on-module host managing ADC data capture, FIR filtering, and DICOM metadata tagging; interfaces to flash storage and LCD controller.

Use Value: 8 KB caches reduce external memory accesses, lowering EMI emissions and power consumption; CQFP package provides hermetic sealing against moisture and contaminants.

Equivalent & Alternatives

The following parts are listed as comparable options for similar embedded microprocessor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MC68EC060RC66	66 MHz maximum clock speed; identical cache size, pinout, and feature set except lower frequency grade.	Suitable for cost-sensitive designs where 75 MHz headroom is unnecessary and thermal/power budgets are tighter.	Select when system timing margins allow reduced clock speed and BOM cost optimization is prioritized over peak throughput.
MC68360VR66B	Integrated QUICC communications processor with dual SCCs, FEC, and DMA; no L1 cache; 66 MHz max; different pinout and memory map.	Better suited for protocol-heavy applications like router modules or base station controllers requiring native HDLC/PPP offload.	Choose only if communications peripheral integration outweighs need for M68000 ISA compatibility and cache performance.

Compared with MC68EC060RC75, the RC66 offers identical architecture at lower frequency for thermal-constrained deployments, while the MC68360VR66B trades raw compute and cache performance for integrated communications acceleration-making it unsuitable as a drop-in replacement but viable for new designs emphasizing protocol handling over general-purpose control.

Availability

MC68EC060RC75 is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and avionics applications requiring stable component supply across extended product lifecycles and obsolescence-sensitive programs.

Supply support for MC68EC060RC75 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 Semiconductor (now part of NXP Semiconductors) was a pioneer in 32-bit microprocessor architecture, delivering high-reliability silicon for automotive, industrial, and communications markets from the 1970s through early 2000s.

The MC68EC060RC75 belongs to Motorola's M68060 family - engineered specifically for embedded systems needing M68000 binary compatibility, deterministic real-time behavior, and simplified system design without FPU or MMU complexity.

FAQ

What is the maximum operating frequency of the MC68EC060RC75?

The MC68EC060RC75 is rated for a maximum clock frequency of 75 MHz under specified thermal and voltage conditions. This rating is validated across commercial and industrial temperature ranges per Motorola's M68060 Electrical and Thermal Characteristics specification. Operation above 75 MHz is not guaranteed and may result in timing violations or functional instability. The MC68EC060RC75 does not contain an internal PLL; it requires a clean, stable 75 MHz external clock source applied to the CLK pin.

Does the MC68EC060RC75 include a floating-point unit or memory management unit?

No, the MC68EC060RC75 explicitly omits both the floating-point unit (FPU) and memory management unit (MMU). This is a defining characteristic of the EC variant within the M68060 family. The absence of these units reduces gate count, power consumption, and thermal output while maintaining full M68000 instruction set compatibility for integer-based embedded control. Software requiring floating-point math must use library-based emulation, and memory protection relies on external logic or simplified software schemes.

How does cache coherency work on the MC68EC060RC75?

The MC68EC060RC75 implements hardware-managed cache coherency using its snoop control (SNOOP) signal and dedicated cache protocol logic. When external bus masters (e.g., DMA controllers) write to memory locations cached by the MC68EC060RC75, the processor monitors the bus via SNOOP and automatically invalidates affected cache lines. This eliminates the need for software cache-flush routines in most multi-master configurations, ensuring data consistency without runtime overhead.

What package type is used for the MC68EC060RC75?

The MC68EC060RC75 is packaged in a 256-pin ceramic quad flat pack (CQFP) with 0.65 mm lead pitch and a hermetically sealed ceramic body. This package provides superior thermal conductivity, moisture resistance, and long-term reliability compared to plastic alternatives - making it suitable for military, aerospace, and industrial applications where extended temperature operation and environmental robustness are required.

Can the MC68EC060RC75 be used as a direct replacement for the MC68060 or MC68LC060?

No, the MC68EC060RC75 is not a pin-compatible or functional drop-in replacement for the MC68060 or MC68LC060. While sharing the same 256-pin CQFP footprint, key signals differ: the MC68EC060RC75 lacks FPU-related pins (e.g., FPCLK, FPIRQ) and MMU-related pins (e.g., ATC, DTTR), and its internal configuration registers do not support MMU initialization. Board-level redesign and firmware adaptation are required to migrate from full or LC variants to the EC variant.

MC68EC060RC75 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:: 75MHz

Co-Processors/DSP:: -

RAM Controllers:: -

Graphics Acceleration:: No

Display & Interface Controllers:: -

Ethernet:: -

SATA:: -

USB:: -

Voltage - I/O:: 3.3V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Security Features:: -

Mounting Type:: Through Hole

Supplier Device Package:: 206-PGA (47.25x47.25)

Additional Interfaces:: SCI, SPI

MC68EC060RC75 FAQ

1.How can I place an order for MC68EC060RC75 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC68EC060RC75 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 MC68EC060RC75 reliable?

The price and inventory of MC68EC060RC75 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68EC060RC75 is usually 5 days.

3.What payment methods are accepted for MC68EC060RC75?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68EC060RC75 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC68EC060RC75?

MC68EC060RC75 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC68EC060RC75 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 MC68EC060RC75?

For technical support, including MC68EC060RC75 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68EC060RC75 requirements.

6.How does Aetrix verify that MC68EC060RC75 is sourced from the original manufacturer or authorized distributors?

All MC68EC060RC75 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 MC68EC060RC75 meets industry standards.

7.What is the process for return or replacement of MC68EC060RC75?

All MC68EC060RC75 units undergo pre-shipment inspection (PSI). If there is an issue with MC68EC060RC75, 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 MC68EC060RC75 part is unused and in its original packaging.

Return procedure for MC68EC060RC75:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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