on December 18th 464

EPM3256AQC208-10 Intel MAX 3000A Device Overview

You get a programmable logic device that helps you combine many fixed logic functions into one flexible chip. The EPM3256AQC208-10 lets you manage control paths, timing signals, and interfaces without redesigning hardware each time logic needs to change. You can update the logic after installation, which makes adjustments easier during testing or later use. With a clear structure, steady timing, and a high pin count, this device fits well in systems that need reliable digital control without the complexity of larger programmable platforms.

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EPM3256AQC208-10 Overview

The EPM3256AQC208-10 is a programmable logic device designed to handle mid-level digital control and interface tasks within a single component. It combines configurable logic resources with predictable timing behavior, allowing multiple fixed logic functions to be consolidated into one flexible design. The device supports updates after installation, which helps accommodate design changes without hardware replacement. It is commonly applied in control circuits, interface adaptation, address decoding, and simple sequencing functions. Its structure favors stable signal handling and consistent response, making it suitable for systems that rely on defined logic paths rather than high-density processing. Looking for EPM3256AQC208-10? Contact us to check current stock, lead time, and pricing.

Pin-Out Diagram of EPM3256AQC208-10

[IMAGE OF 208–Pin PQFP Package Pin-Out Diagram]

Square package layout defines the physical pin arrangement for the 208 pin plastic quad flat pack used by the device, with pins distributed evenly along all four sides. Pin 1 is marked at the upper left corner, and numbering proceeds sequentially around the package perimeter, with reference points shown at pins 53, 105, and 157 to indicate side transitions. The package outline is identified as not drawn to scale, emphasizing orientation and numbering rather than dimensions. Central labeling identifies compatible device variants, while the symmetrical lead structure supports high pin count connectivity for power, ground, and user I O signals.

EPM3256AQC208-10 CAD Model

EPM3256AQC208-10 Symbol

EPM3256AQC208-10 Footprint

EPM3256AQC208-10 3D Model

Features of EPM3256AQC208-10

MAX 3000A CPLD Family Membership

The device is part of the MAX 3000A CPLD family, which is designed for stable digital logic control and interface tasks. This family focuses on predictable behavior and repeatable timing, making it suitable for systems that require consistent logic operation. It allows multiple fixed logic functions to be combined into one configurable device, reducing circuit complexity.

In-System Programmable Architecture

The EPM3256AQC208-10 supports in-system programming, allowing logic configurations to be written, updated, or corrected after the device is installed on a circuit board. This capability supports design changes without hardware replacement and simplifies updates during development or maintenance. It also helps reduce downtime when logic adjustments are needed.

Fast Propagation Delay Performance

The device offers a maximum propagation delay of 10 ns, enabling rapid response between logic inputs and outputs. This supports applications that depend on timely signal transitions and controlled response paths. The consistent delay behavior helps maintain reliable operation in synchronous and control-based designs.

Internal Operating Voltage Range

The internal logic operates within a voltage range of 3.0 V to 3.6 V, aligning with common low-voltage digital systems. This range supports stable logic operation while maintaining compatibility with surrounding components. It also helps manage power behavior in compact digital designs.

Macrocell-Based Logic Resources

A total of 256 macrocells are available to implement programmable logic functions. These macrocells support combinational and registered logic, allowing flexible implementation of control logic and interface functions. This capacity suits mid-level logic requirements without the overhead of larger programmable devices.

Organized Logic Block Structure

The internal architecture is arranged into 16 logic blocks, providing a structured approach to logic placement and signal flow. This organization helps maintain predictable timing and simplifies the management of logic paths. It supports orderly design implementation for control and sequencing tasks.

Usable Logic Gate Capacity

The device provides approximately 5000 usable logic gates, enabling it to replace several discrete logic components within a single package. This consolidation helps reduce board space and simplifies system layout. It is well suited for designs that require moderate logic complexity.

High User Input Output Availability

The EPM3256AQC208-10 includes 158 user input and output pins, allowing extensive connection to external signals and devices. This high pin count supports complex interfacing needs such as address decoding, bus control, and signal routing. It enables flexible integration within larger digital systems.

Surface Mount PQFP Package

The device is housed in a 208 pin PQFP surface mount package designed for dense circuit board layouts. This package supports reliable electrical connections while fitting into s

EPM3256AQC208-10 Technical Specifications

Product Attribute	Attribute Value
Manufacturer	Intel
Voltage Supply - Internal	3V ~ 3.6V
Supplier Device Package	208-PQFP (28x28)
Series	MAX® 3000A
Programmable Type	In System Programmable
Package / Case	208-BFQFP
Package	Tray
Operating Temperature	0°C ~ 70°C (TA)
Number of Macrocells	256
Number of Logic Elements/Blocks	16
Number of I/O	158
Number of Gates	5000
Mounting Type	Surface Mount
Delay Time tpd(1) Max	10 ns
Base Product Number	EPM3256

Device Block Diagram of EPM3256AQC208-10

Internal architecture is organized around multiple Logic Array Blocks labeled A through D, each containing groups of macrocells used to implement programmable logic functions. Macrocells are connected through a central Programmable Interconnect Array that provides routing paths between logic blocks and distributes signals across the device. I/O Control Blocks are positioned around the logic array and manage data flow between internal logic and external pins, supporting configurable input, output, and bidirectional operation. Global control lines at the top handle clock distribution, output enable control, and global clear functions, allowing synchronized operation across all logic blocks. Signal width annotations indicate the number of available routing and enable lines between blocks, reflecting the fixed, predictable structure used throughout the MAX 3000A family.

Macrocell of EPM3256AQC208-10

Macrocell structure combines a product term select matrix with parallel and shared logic expanders to form configurable combinational logic within a Logic Array Block. Input signals arrive from the Programmable Interconnect Array and local LAB routing, feeding up to sixteen product terms that are combined through selectable logic paths. The output can be routed either directly or through a programmable register that includes clock enable, clear control, and access to global clock and global clear signals. A register bypass path allows purely combinational operation, while controlled feedback routes the result back to the interconnect array or toward the I/O control block for external connection.

AC Test Conditions of EPM3256AQC208-10

Test configuration defines the external circuit used to measure AC performance of device input and output paths under controlled conditions. A resistive network connects the device output to the supply and ground using specified resistor values that differ for 2.5 V and 3.3 V operation, establishing known load characteristics. A capacitor connected to ground represents total load capacitance, including test fixture effects, while the measurement node interfaces with the test system. The setup constrains input rise and fall times to less than two nanoseconds and minimizes noise caused by ground current transients during output switching, ensuring consistent and repeatable AC timing results.

Applications of EPM3256AQC208-10

Glue Logic Replacement for Discrete Components

The EPM3256AQC208-10 is commonly used to replace collections of fixed logic devices such as gates, decoders, and multiplexers. By consolidating these functions into one programmable device, system layouts become simpler and easier to manage. Logic behavior can also be adjusted through reprogramming, which supports design refinement without hardware changes.

Address Decoding and Control in Embedded Systems

In embedded systems, the device handles address decoding and control tasks that coordinate memory, peripherals, and control signals. It helps direct data flow and manage enable signals with consistent timing. This makes it suitable for systems that rely on clear separation of address spaces and predictable control behavior.

Bus Interfacing and Protocol Adaptation

The device is applied in bus interfacing roles where different signal formats or timing requirements must work together. It supports signal conditioning, routing, and basic protocol translation between subsystems. This helps maintain orderly communication paths within mixed or legacy digital environments.

Industrial Control Panels and Automation Equipment

Within industrial control panels, the EPM3256AQC208-10 manages sequencing, interlock logic, and status monitoring. Its stable timing supports coordinated operation of sensors, actuators, and control signals. The device fits well in automation equipment that values reliable logic operation over high processing complexity.

Telecommunications Support Logic Functions

The device serves as support logic in telecommunications systems, handling timing control, interface coordination, and auxiliary digital functions. It helps organize signal relationships between functional blocks. This role supports consistent operation in communication equipment that depends on orderly digital control.

Consumer Electronics Control and Timing

In consumer electronics, the device is used for control and timing functions such as input handling, mode selection, and system coordination. Its programmable nature allows one design to support multiple product variations. This flexibility supports compact and adaptable consumer devices.

Legacy System Maintenance and Redesign

The EPM3256AQC208-10 is well suited for maintaining or updating legacy systems that require pin-compatible programmable logic. It allows existing hardware layouts to remain unchanged while logic behavior is revised. This approach helps extend system life while keeping redesign effort manageable.

EPM3256AQC208-10 Advantages and Disadvantages

Advantages

• In-system programmability supports logic updates without removing the device

• Maximum 10 ns delay enables responsive digital signal handling

• High number of I O pins supports broad external connectivity

• Predictable timing behavior supports stable control logic operation

• Suitable for glue logic, control functions, and interface bridging

• PQFP package supports easier inspection and assembly compared to array packages

Disadvantages

• Limited logic resources compared to newer programmable logic devices

• Operation restricted to a commercial temperature range from 0 C to 70 C

• Higher power usage than more recent low-power logic solutions

• Larger package footprint compared to modern compact alternatives

• Fewer integration features than advanced programmable platforms

EPM3256AQC208-10 Alternatives

Part Number	Manufacturer	Key Features	Use Case/Notes
EPM3256AQI208-10	Intel	Member of the MAX 3000A CPLD family with 256 macrocells, in-system programmability, and stable 3 V operation for reliable logic control.	Used in industrial and embedded systems for glue logic, interface control, and moderate-speed digital designs.
EPM3256AQI208-10N	Intel	Same logic density and architecture as other EPM3256 devices, with predictable timing and flexible I/O handling.	Suitable for legacy designs and embedded platforms that require dependable CPLD-based logic integration.
EPM3256AQC208-7N	Intel	Faster speed-grade variant offering lower propagation delay while maintaining the same macrocell and I/O structure.	Ideal for timing-sensitive logic such as bus arbitration, state machines, and performance-critical control paths.

About Intel

Intel is a global technology company known for developing a wide range of digital computing and programmable logic products. Its portfolio spans processors, programmable devices, and system solutions used across computing, communications, and industrial markets. The company has a long history of advancing digital design tools and platforms that support reliable system development. Through continuous investment in process technology and product integration, Intel supports scalable solutions that serve both embedded systems and high-performance applications. Its product families are widely adopted in systems that value consistency, long-term support, and broad ecosystem compatibility.

Conclusion

The EPM3256AQC208-10 offers a clear way to handle mid-level digital logic in one device. You can replace groups of fixed logic parts while keeping timing behavior steady and easy to predict. Its macrocell-based design gives you enough room for control, decoding, and interface tasks. The 208-pin package also supports wide signal access when connections matter. With in-system programming, you can adjust logic without touching the board. Overall, it gives you a practical balance of flexibility and structure for long-term use.

Datasheet PDF

EPM3256AQC208-10 Datasheet:

EPM3256AQC208-10.pdf

EPM3256AQC208-10.pdf

EPM3256AQC208-10.pdf

EPM3256AQC208-10.pdf

EPM3256AQC208-10.pdf

EPM3256AQC208-10.pdf

EPM3256AQC208-10.pdf