on March 10th 334

EPM7128ATC100-10 Programmable Logic Chip Overview

Working with digital systems often means you need flexible logic that can adapt to different signal paths and control tasks. EPM7128ATC100-10 gives you a programmable logic solution that can be configured to manage timing, routing, and logic control inside electronic systems. With 128 macrocells and thousands of usable logic gates, you can build custom logic functions inside a compact device. Its surface mount package fits easily on modern circuit boards, while stable timing and flexible input and output connections help you handle many types of digital control tasks in embedded systems.

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EPM7128ATC100-10 Overview

EPM7128ATC100-10 is a programmable logic device designed to implement configurable digital control functions in embedded electronic systems. The device contains 128 macrocells and roughly 2500 logic gates that allow designers to create custom logic circuits such as control logic, interface management, and state machines. Its structure organizes programmable logic within multiple logic array blocks connected through an internal routing network that distributes signals across the device. Operating from a supply range of 3 V to 3.6 V and supporting propagation delay up to 10 ns, it enables predictable logic timing. The 100 pin TQFP package supports compact surface mount installation in space constrained circuit designs.

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Pin Configuration of EPM7128ATC100-10

Square package layout presents a quad flat style device with metal leads extending from all four sides of the body. Pin numbers are arranged sequentially around the perimeter, beginning with pin 1 at the upper left corner and continuing along each side in order until the final pins appear on the remaining edges. Corner indicators mark key orientation points used for correct device placement on a printed circuit board. The center area contains device identification markings associated with the MAX 7000A programmable logic family. Lead spacing and symmetrical arrangement support surface mount installation and allow each external pin to connect with signal routing on the board.

Pin-Out Example of EPM7128ATC100-10

Pin arrangement demonstrates a shared printed circuit board layout that supports multiple FineLine BGA package sizes. A central board design originally prepared for a 256 pin FineLine BGA footprint is shown with a dense grid of solder ball locations. The layout allows a smaller 100 pin FineLine BGA device to be placed within the same pin field while maintaining compatible routing connections. Outer ball positions remain unused when the smaller package is installed, while the full grid is utilized for the larger device. This arrangement enables a single board design to support devices with different input output counts or logic requirements without changing the PCB layout.

Features of EPM7128ATC100-10

Programmable Logic Architecture

The device uses a macrocell based programmable logic structure that allows digital circuits to be configured after manufacturing. Each macrocell can implement combinational logic or registered logic functions, giving designers flexibility when building control paths, signal routing logic, and timing circuits. This architecture allows several discrete logic functions to be integrated into one device while maintaining predictable logic behavior.

Structured Logic Array Blocks

Internal logic resources are organized into logic array blocks that group macrocells and share routing resources. This arrangement simplifies internal signal distribution and helps maintain stable logic operation across the device. Signals can be routed between blocks through an internal interconnect network that supports complex digital logic arrangements.

Wide Input And Output Connectivity

Up to eighty four input and output pins allow the device to connect directly with multiple digital signals in an embedded system. These pins can be configured for input, output, or bidirectional operation depending on the design requirement. This flexibility allows the device to manage communication between processors, memory devices, and peripheral logic circuits.

Fast Logic Response

The device supports propagation delay of up to ten nanoseconds, enabling responsive digital logic behavior. This timing performance supports control functions that require consistent signal switching and reliable synchronization with other digital components in the system.

Electrically Reprogrammable Logic

Configuration is stored using electrically erasable programmable technology that allows the device logic to be updated when system requirements change. Designers can modify digital logic during development or system maintenance without replacing the hardware component.

Low Voltage Operation

Operation within a supply range of three volts to three point six volts allows the device to integrate with many modern digital systems. This voltage range supports stable logic levels while maintaining compatibility with common digital interface standards.

Compact Surface Mount Package

The device is provided in a one hundred pin thin quad flat package designed for surface mount assembly. The compact package footprint helps conserve board space and supports automated manufacturing processes used in modern electronic production.

Integrated Digital Control Capability

Combining programmable logic, flexible routing, and configurable input and output connections allows the device to perform various digital control tasks. It can replace multiple discrete logic circuits while maintaining stable signal behavior across embedded electronic designs.

EPM7128ATC100-10 Technical Specifications

Product Attribute	Attribute Value
Manufacturer	Altera (Intel)
Voltage Supply - Internal	3V ~ 3.6V
Supplier Device Package	100-TQFP (14x14)
Series	MAX® 7000A
Programmable Type	EE PLD
Package / Case	100-TQFP
Package	Bulk
Operating Temperature	0°C ~ 70°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
RoHs Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8542.39.0001

Device Block Diagram of EPM7128ATC100-10

The diagram illustrates the internal logic architecture used by MAX 7000A CPLD devices such as the EPM7128ATC100-10. The structure is organized around multiple Logic Array Blocks labeled LAB A, LAB B, LAB C, and LAB D, each containing groups of macrocells that implement programmable logic functions. These macrocells support combinational logic and registered logic operations within the device. The Logic Array Blocks are connected through a central Programmable Interconnect Array that routes signals between logic sections. Each Logic Array Block connects to an I O Control Block that manages the device input and output pins. Global control signals including clock inputs, output enable signals, and global clear inputs enter from the top of the architecture and distribute control signals across the internal logic structure to coordinate device operation.

Macrocell of EPM7128ATC100-10

Logic signals enter the macrocell from the Programmable Interconnect Array through thirty six routing lines connected to the LAB local array. A product term select matrix combines these signals with up to sixteen expander product terms to create programmable logic functions. Parallel logic expanders allow additional terms from neighboring macrocells, while shared logic expanders distribute extra product terms across the logic array block to increase logic capacity. Output paths feed a programmable register that operates with global clock and clear control lines, allowing either registered or direct combinational output. A fast input select path accepts signals from an external I O pin, and a register bypass path allows the signal to pass without clocked storage. Final output signals are routed either to the I O control block for external pins or back into the Programmable Interconnect Array for internal signal routing.

Applications of EPM7128ATC100-10

Embedded System Control Logic

Programmable logic devices such as this one are often used to implement custom control logic inside embedded systems. It can coordinate timing relationships between processors, sensors, and communication devices while maintaining stable signal flow across the system.

Industrial Automation Controllers

Automation equipment frequently requires dedicated logic to manage sensors, relays, and actuator signals. The device can be programmed to handle control sequences, safety checks, and signal routing tasks used in automated machines and monitoring systems.

Telecommunications Interface Logic

Communication equipment uses programmable logic to manage signal routing between processors and interface circuits. The device can support digital switching, protocol handling, and signal conditioning that help maintain reliable communication between system components.

Consumer Electronics Control Circuits

Digital consumer products often rely on compact logic devices to coordinate internal operations. The device can manage timing, input processing, and signal control within electronic products such as multimedia equipment, home electronics, and peripheral devices.

Digital Signal Routing And Interface Management

Systems that combine multiple digital subsystems require controlled signal routing between components. The programmable logic structure allows designers to create customized routing logic that directs signals between memory, processors, and external interfaces.

State Machine Implementation

Many electronic systems rely on state machines to manage operational sequences. The device can implement these state based control structures using programmable logic paths that respond to input conditions and timing events.

Replacement For Discrete Logic Components

Several separate logic gates and control circuits can often be consolidated into one programmable device. This approach reduces board complexity while allowing logic behavior to be adjusted through configuration updates when system requirements change.

Advantages and Disadvantages of EPM7128ATC100-10

Advantages

• Flexible programmable logic allows designers to implement custom digital circuits

• Faster development cycle compared with fixed logic devices

• Compact integration of multiple logic functions within a single device

• Reliable operation with relatively low propagation delay for control logic tasks

• Supports multiple input and output connections through 84 I/O pins

• Reprogrammable architecture allows design updates during development

• Suitable for replacing several discrete logic ICs in embedded systems

Disadvantages

• Lower logic density compared with modern FPGA devices

• Limited internal resources relative to newer programmable logic families

• Restricted operating temperature range compared with industrial grade devices

• RoHS non-compliant version may limit use in some modern environmental compliance designs

EPM7128ATC100-10 Alternatives

Part Number	Manufacturer	Key Features	Use Case/Notes
EPM7128ATC100-12F	Altera	MAX 7000A family CPLD with 128 macrocells and roughly 2,500 usable logic gates. Uses electrically erasable programmable logic technology and a 100-pin TQFP package with many programmable I/O connections.	Used for digital control logic, bus interface logic, and system glue logic where several digital functions must be implemented in one programmable device.
EPM7128ATC100-6	Altera	Higher speed grade CPLD from the MAX 7000A architecture. Provides programmable macrocells, internal routing resources, and flexible digital input and output pins.	Suitable for timing-sensitive digital logic, interface management, and embedded control systems that require faster logic response.
EPM7128ATC144-10	Altera	CPLD device using MAX 7000A architecture with nonvolatile configuration memory and a larger package that supports more I/O connections for digital system integration.	Common in industrial control boards, communication hardware, and programmable logic control tasks where additional external signals must be handled.

About Altera (Intel)

Altera was a semiconductor company known for developing programmable logic devices used in digital systems and embedded electronics. The company specialized in field programmable gate arrays and complex programmable logic devices that allow designers to implement custom digital circuits within a single component. Its product families were widely used in communication equipment, computing platforms, industrial control systems, and consumer electronics. In 2015 the company became part of Intel, where its programmable logic technologies continue to be developed and integrated into data center, networking, and embedded computing platforms.

Conclusion

The EPM7128ATC100-10 is a programmable logic device designed to handle configurable digital control tasks in electronic systems. It combines 128 macrocells and an internal routing structure that allows you to build custom logic functions inside one compact chip. The device organizes its logic resources through logic array blocks that connect through a programmable routing network. Its pin configuration and compact TQFP package support surface mount designs used in modern circuit boards. You can use this device to manage signal routing, logic sequencing, and control functions across many digital applications. This flexibility helps simplify circuit design while keeping system behavior predictable.