The EPM7128ELC84-15N is a Complex Programmable Logic Device (CPLD) from Intel (Altera). It belongs to the MAX 7000S family. These CPLDs are versatile components used for implementing a wide range of digital logic functions, offering a balance between the simplicity of SPLDs and the density of FPGAs.

Applications

• Address Decoding: Used to decode memory addresses in embedded systems.
• Peripheral Interfacing: Acts as an interface between a microcontroller and various peripherals.
• State Machine Implementation: Implements custom state machines for controlling sequential logic.
• Glue Logic: Connects different components on a circuit board.
• Custom Logic Functions: Implements application-specific logic functions.

Features

• 128 Macrocells: Provides a significant amount of programmable logic resources.
• Electrically Erasable Programmable Read-Only Memory (EEPROM): Non-volatile memory allows for easy reprogramming.
• In-System Programmability (ISP): Enables programming and reconfiguration without removing the device from the board.
• 84-Pin PLCC Package: Industry-standard package for easy prototyping and production.
• High Speed: -15 speed grade indicates relatively fast performance.

Benefits

• Flexibility: Programmable logic allows for design changes and updates.
• Reduced Component Count: Integrates multiple logic functions into a single chip.
• Faster Time-to-Market: ISP enables rapid prototyping and debugging.
• Simplified Board Design: PLCC package simplifies board layout and assembly.
• Cost-Effective: Offers a good balance of performance and cost.

Additional Details

The EPM7128ELC84-15N operates at 5V. The operating temperature range is typically between 0°C and 70°C. It has a propagation delay of 15ns, which is relatively fast for CPLDs of this generation. The 84-pin PLCC (Plastic Leaded Chip Carrier) package is easy to handle and solder. The device is programmed using a standard JTAG interface. The 'N' suffix likely indicates a specific feature or revision. This CPLD is often used in older embedded systems and industrial control applications where its combination of programmability and cost-effectiveness is beneficial. It is a non-volatile device, meaning that it retains its programming even when power is removed.