on January 6th 523

Learn About EPM7128SQI100-10 CPLD and How It Handles Digital Logic

You often want a single device that can handle several logic tasks without filling your board with extra parts. The EPM7128SQI100-10 gives you that flexibility by combining control logic, decoding, and signal routing in one programmable chip. You can shape its behavior to match your circuit needs and adjust it later if things change. With a balanced logic capacity and predictable timing, it fits well into systems that need steady digital control. Its surface-mount package also helps keep layouts clean while still giving you plenty of usable I/O connections.

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EPM7128SQI100-10 Overview

The EPM7128SQI100-10 is a programmable logic device designed to handle custom digital control and interface tasks within electronic systems. It contains 128 logic elements that allow multiple logic functions to be combined into a single component, helping simplify circuit layouts and reduce part count. The device supports fast logic response suitable for timing control, signal routing, and decision based operations. Its 100 pin surface mount package enables integration into compact board designs while maintaining stable electrical performance. Common uses include glue logic, state control, address decoding, and interface adaptation in industrial and embedded applications. Looking for EPM7128SQI100-10? Contact us to check current stock, lead time, and pricing.

Pin-Out Diagram of EPM7128SQI100-10

Pin arrangement is shown for the 84 pin PLCC package, with signal names and pin numbers distributed evenly around all four sides of the device. User I O pins occupy most positions and are interspersed with dedicated power, ground, and control pins to support stable operation. VCC and GND pins are placed at regular intervals to provide consistent power distribution across the package. Dedicated pins for global clock, output enable, and JTAG functions are clearly labeled to distinguish them from general purpose I O. The diagram reflects a standardized layout that supports predictable signal routing, simplified board design, and compatibility across related MAX 7000 series devices.

Features of EPM7128SQI100-10

In System Programmable Logic Architecture

The EPM7128SQI100-10 supports logic programming directly while mounted on the circuit board. This allows logic updates during development or after deployment without removing the device. It helps reduce downtime and simplifies revisions when system behavior needs adjustment.

Medium Density Logic Capacity

The device provides 128 macrocells that allow multiple logic functions to be implemented within a single component. This capacity supports control logic, decoding tasks, and interface handling while reducing the need for additional discrete logic devices.

Structured Logic Array Block Design

Eight internal logic array blocks organize the logic resources in a predictable way. This structure supports stable signal routing and consistent logic behavior across different operating conditions.

Usable Logic Gate Availability

With approximately 2500 usable logic gates, the device can support state machines, timing control, and custom digital functions. This level of integration helps simplify board layouts and lowers overall component count.

Flexible User Input and Output Support

The device supports up to 84 user configurable input and output pins. This flexibility allows it to interface with a wide range of external signals, buses, and peripheral devices in embedded systems.

Fast Propagation Delay Performance

A maximum propagation delay of 10 ns allows the device to respond quickly to input changes. This makes it suitable for applications that require predictable timing and responsive digital control.

Industrial Temperature Operating Range

The device is designed to operate reliably across an industrial temperature range. This allows stable performance in environments where temperature variation is expected, such as control systems and industrial electronics.

EPM7128SQI100-10 Technical Specifications

Product Attribute	Attribute Value
Manufacturer	Intel
Voltage Supply - Internal	4.5V ~ 5.5V
Supplier Device Package	100-PQFP (20x14)
Series	MAX® 7000S
Programmable Type	In System Programmable
Package / Case	100-BQFP
Package	Tray
Operating Temperature	-40°C ~ 85°C (TA)
Number of Macrocells	128
Number of Logic Elements/Blocks	8
Number of I/O	84
Number of Gates	2500
Mounting Type	Surface Mount
Delay Time tpd(1) Max	10 ns
Base Product Number	EPM7128

Device Block Diagram of EPM7128SQI100-10

Internal architecture is arranged around multiple logic array blocks, each containing a defined group of macrocells used to implement combinational and registered logic functions. These logic array blocks are interconnected through a central programmable interconnect array that enables signal routing between blocks with predictable timing behavior. Dedicated I O control blocks surround the logic array blocks and manage input buffering, output driving, tri state control, and feedback paths between external pins and internal logic. Global resources, including clock inputs, output enable signals, and a global clear signal, are distributed across the device to support synchronous operation and coordinated control of outputs. This structure reflects the organization used by the EPM7128SQI100-10, which integrates multiple logic array blocks and macrocells to support medium density programmable logic with deterministic signal routing and centralized control paths.

Device Macrocell of EPM7128SQI100-10

Logic within a single macrocell is organized around a product term select matrix that receives input signals from the programmable interconnect array and local logic expanders. Multiple product terms are combined to form sum of products logic, which can drive either a combinational output or a programmable register. The register includes clock enable, clear, preset, and bypass paths, allowing flexible selection between registered and unregistered operation. Global clock and global clear signals are routed directly into the macrocell to support synchronous control across the device. Output data is passed to the I O control block or fed back into the interconnect array, enabling reuse of logic results and efficient signal distribution within the EPM7128SQI100-10.

AC Test Conditions of EPM7128SQI100-10

Test configuration defines the electrical conditions used for AC timing measurements by specifying resistive loads, capacitive loading, and signal paths between the device and the test system. The device output is connected to VCC through a pull up resistor and to ground through a defined load network that models output drive behavior during switching. A capacitor represents total load capacitance, including fixture effects, while the test system connection monitors signal transitions. Input rise and fall times are constrained to less than 3 ns to ensure consistent measurement conditions. The setup reflects how supply transients and ground current can influence observed AC performance and establishes standardized conditions for timing characterization of the EPM7128SQI100-10.

Applications of EPM7128SQI100-10

Industrial Control and Automation Systems

The EPM7128SQI100-10 is commonly used in industrial control environments to handle sequencing, interlock logic, and signal coordination. It helps manage input conditions from sensors and switches while generating stable control signals for actuators and control modules. Its programmable structure allows control behavior to be adapted as system requirements change.

Telecommunications Equipment Control Logic

In telecommunications equipment, the device supports control paths that manage timing, signal routing, and interface coordination. It is often used to organize control signals between processing units and communication interfaces, helping maintain orderly data flow within switching and transmission hardware.

Networking Hardware Glue Logic

The device is applied as glue logic in networking hardware to connect processors, memory devices, and peripheral components. It supports address decoding, bus arbitration, and signal alignment, allowing different digital blocks to operate together within compact network systems.

Embedded System Interface and Decoding Logic

Within embedded systems, the EPM7128SQI100-10 provides interface logic between controllers and external devices. It is used for address decoding, control signal generation, and basic protocol handling, helping simplify system design and reduce the number of discrete logic components.

Legacy Computing and Instrumentation Systems

The device is well suited for legacy computing platforms and instrumentation systems that require stable logic replacement. It can consolidate older discrete logic functions into a single programmable device while preserving compatibility with existing signal levels and timing behavior.

Protocol Bridging and State Machine Implementation

The EPM7128SQI100-10 is used to implement protocol bridging and state machines that manage structured digital processes. It supports defined state transitions and control sequencing, making it suitable for coordinating communication and control tasks across different system blocks.

Advantages and Disadvantages of EPM7128SQI100-10

Advantages

• Supports in system logic updates without removing the device from the board

• Provides 128 macrocells suitable for medium scale control and interface logic

• Offers predictable timing with a maximum propagation delay of 10 ns

• Operates across an industrial temperature range for stable field performance

• Includes a high number of user configurable input and output pins for flexible interfacing

Disadvantages

• Operates on a 5 V supply which limits compatibility with lower voltage systems

• Logic capacity is lower compared to more recent programmable logic devices

• Power usage is higher than modern low power programmable alternatives

• Package size may not suit highly compact or space constrained designs

EPM7128SQI100-10 Alternatives

Part Number	Manufacturer	Key Features	Use Case/Notes
EPM7128SQI100-10N	Intel	128 macrocells with in-system programmability, 5 V internal supply range, and fast 10 ns maximum propagation delay in a surface-mount package.	Used in digital glue logic, control logic, and interface applications requiring reliable timing and moderate logic density.
EPM7128SQI160-10	Intel	Same 128 macrocell architecture with 10 ns speed grade, offered in a larger pin-count package for expanded routing flexibility.	Well suited for designs needing additional I/O access or compatibility with existing board layouts.
EPM7128SQI160-10N	Intel	128 macrocells, in-system programmable CPLD with stable 5 V operation and extended temperature support.	Appropriate for industrial and embedded systems that require dependable logic control across wider temperature ranges.

About Intel

Intel is a global technology company known for developing a wide range of digital computing and programmable logic solutions. The company has a long history of advancing semiconductor design for computing, communications, and embedded systems. Its programmable logic portfolio supports system control, signal management, and interface logic across industrial, networking, and embedded applications. Intel focuses on providing scalable logic platforms that balance performance, stability, and long term platform support. Its products are widely used in both established system architectures and evolving digital designs, reflecting a strong presence in the broader electronics ecosystem.

Conclusion

The EPM7128SQI100-10 brings together logic control, timing, and interface handling in a single programmable device. You get a clear structure with logic array blocks and macrocells that make behavior predictable. Its pin layout and I/O flexibility help simplify board routing. Fast response times support stable digital control in many systems. The device also works well when you need to update logic without hardware changes. Overall, it offers a practical way to manage medium-scale digital logic in one place.

Datasheet PDF

EPM7128SQI100-10 Datasheet:

EPM7128SQI100-10.pdf

EPM7128SQI100-10.pdf

EPM7128SQI100-10.pdf

EPM7128SQI100-10.pdf

EPM7128SQI100-10.pdf

EPM7128SQI100-10.pdf