EPM7256SRC208-7 CPLD Pinout, Specifications, Applications, and Programming

EPM7256SRC208-7 CPLD Pinout

You will see that the epm7256src208-7 is special. It is a non-volatile programmable logic device. Digital designers use it for flexibility and reliability. The epm7256src208-7 has 208 pins. It has 256 macro cells. It has 5000 usable gates. There are 164 I/O pins. The epm7256src208-7 gives strong connections for big projects. It works at 5V. It has a fast 5 ns delay. This makes the epm7256src208-7 good for real-time control. The 208-RQFP package makes it easy to use. You can use the epm7256src208-7 for glue logic, control, or FPGA integration. Knowing the Pinout and specifications helps you use this cpld well.

Key Takeaways

The EPM7256SRC208-7 is a non-volatile CPLD. It has 256 macro cells and 5000 usable gates. This makes it good for complex digital designs.
It has 164 I/O pins and a fast 5 ns delay. This device works well for real-time uses. It also gives many ways to connect to other parts.
Knowing the pinout is very important for your project. Always check the official datasheet to know what each pin does.
The device uses 5V, so it works with many digital systems. It has non-volatile memory, so it keeps its settings even when off.
You can program the EPM7256SRC208-7 in-system using JTAG. This lets you update it easily without taking out the chip.

EPM7256SRC208-7 CPLD Overview

Device Summary

The epm7256src208-7 is a strong and flexible logic device. It has 256 macro cells and 5000 usable gates. There are 208 pins, so you can connect many circuits. With 164 I/O pins, it can handle hard designs. This device works in lots of digital systems. It uses a 5V power supply and fits in a 208-RQFP package. The epm7256src208-7 is fast with a 5 ns delay. You can trust it for real-time control and quick data work.

Note: The epm7256src208-7 is non-volatile. Your design stays safe even if the power is off.

You can use the epm7256src208-7 for glue logic or bus interfacing. It can also connect different parts of your system. Many engineers pick this device because it is fast and reliable.

Key Features

The epm7256src208-7 has many important features:

256 macro cells for flexible logic design
5000 usable gates for complex functions
208 pins, including 164 I/O pins for wide connectivity
5V operation for easy integration with standard systems
Fast 5 ns pin-to-pin delay for real-time applications
Non-volatile memory to keep your configuration safe
208-RQFP package for secure mounting

Here is a quick look at the main features:

Feature	Value
Macro Cells	256
Usable Gates	5000
Total Pins	208
I/O Pins	164
Supply Voltage	5V
Pin-to-Pin Delay	5 ns
Package Type	208-RQFP

The epm7256src208-7 is special for its speed, size, and flexibility. This cpld helps you make digital systems that work well and last long.

EPM7256SRC208-7 Pinout

Pinout Diagram

You need to understand the pinout of the epm7256src208-7 before you start your project. The pinout diagram shows you where each pin sits on the chip. This helps you connect the right signals and avoid mistakes. The epm7256src208-7 comes in a 208-RQFP package. You will see pins on all four sides of the chip. Each pin has a number and a function.

Here is a simplified pinout diagram for the epm7256src208-7. This diagram gives you a basic view of the chip layout. You can use it as a quick reference when you wire your board.

      +------------------------------------------------------+
     1| [                EPM7256SRC208-7 CPLD               ]|208
      |                                                      |
     2|                                                      |207
      |                                                      |
     3|                                                      |206
      |                                                      |
     .|                                                      |.
     .|                                                      |.
     .|                                                      |.
    52|                                                      |157
      |                                                      |
      +------------------------------------------------------+

Tip: Always check the official datasheet for the full pinout diagram. The datasheet gives you every pin number and its exact function.

Pinout Details

You will find 208 pins on the epm7256src208-7. Out of these, 164 pins work as general-purpose I/O. You can use these pins to connect switches, LEDs, or other chips. The rest of the pins have special jobs. Some pins give power to the chip. Some pins handle programming or configuration. A few pins work as clock or control signals.

Here is a table that shows you the main pin functions:

Pin Type	Pin Count	Description
I/O Pins	164	Connects to external devices and signals
VCC (Power)	8	Supplies 5V power to the chip
GND (Ground)	8	Connects to ground
JTAG Pins	4	Used for programming and debugging
Clock Pins	4	Receives clock signals for timing
Dedicated Inputs	12	Handles special input signals
Reserved	8	Not used by user, for internal functions

You should pay attention to the special pins. The JTAG pins let you program the epm7256src208-7 using a standard cable. The clock pins help you set up timing for your logic. Power and ground pins keep your chip running safely.

Note: If you use the wrong pin for power or ground, your chip may not work. Always double-check the pinout details before you solder or connect wires.

You can see that the pinout of the epm7256src208-7 gives you many options. You get a large number of I/O pins for your circuits. You also get special pins for programming and control. This makes the epm7256src208-7 a flexible choice for many digital projects.

Specifications

When you use the epm7256src208-7, you must know its specifications. These facts help you plan your project and stop mistakes. This section gives you the most important technical specs, electrical data, and package info. If you understand these specs, you can use the epm7256src208-7 cpld with confidence.

Technical Specs

You should look at the technical specs before you start your design. The epm7256src208-7 has many features for digital logic projects. Here is a table that lists the main technical specs:

Parameter	Value
Macro Cells	256
Usable Gates	5000
I/O Pins	164
Total Pins	208
Pin-to-Pin Delay	5 ns
Operating Voltage	5V
Package Type	208-RQFP

You get 256 macro cells to build complex logic. The 5000 usable gates let you add many functions. With 164 I/O pins, you can connect lots of devices. The fast 5 ns delay means signals move quickly in the chip. These technical specs make the epm7256src208-7 a good pick for hard designs.

Tip: Always check if your project needs match the device specs. This helps you avoid problems later.

Electrical Data

You need to know the electrical data to keep your circuit safe. The epm7256src208-7 uses a 5V supply voltage. This matches many digital systems. The chip uses little current when it works. You should connect all power and ground pins to make sure the device works well.

Supply Voltage (VCC): 5V ±10%
Input High Voltage (VIH): 2.0V (min)
Input Low Voltage (VIL): 0.8V (max)
Output High Voltage (VOH): 4.4V (min)
Output Low Voltage (VOL): 0.4V (max)
Maximum I/O Pin Current: 24 mA (per pin)

These electrical specs help you make safe power and signal connections. If you follow these values, you protect the epm7256src208-7 from harm.

Note: Never go over the maximum ratings in the specs. This can break your device forever.

Package Info

The epm7256src208-7 comes in a 208-pin RQFP package. This package is called "Reduced Quad Flat Package." You will see pins on all four sides of the chip. The RQFP package makes it easy to put the device on a circuit board.

Package Type: 208-RQFP
Pin Pitch: 0.5 mm
Body Size: 28 mm x 28 mm
Height: 3.4 mm (typical)

You should be careful with the package. The small pin pitch means you need to solder carefully. The many pins give you lots of ways to connect, but you must check the pinout to avoid mistakes.

If you use a socket or adapter, make sure it fits the 208-RQFP package. This helps you avoid connection problems.

Now you have a clear idea of the specs for the epm7256src208-7. These technical specs, electrical data, and package info help you use the device in your next project. Always check the specs before you start your design.

Main Features

Logic Architecture

You will find that the epm7256src208-7 uses a powerful logic structure. This device gives you 256 macro cells. Each macro cell lets you build custom logic functions. You can use these cells to create counters, state machines, or data paths. The epm7256src208-7 splits its logic into groups called logic array blocks. Each block connects to others with fast routing. This setup helps you design complex circuits without slowdowns.

You can use the 164 I/O pins to link the epm7256src208-7 to many devices. The logic array blocks work together to handle wide data buses or many control signals. You get flexible routing, so you can change your design as your project grows. The device also supports programmable interconnects. This feature lets you adjust connections inside the chip for better performance.

Tip: Plan your logic to use the macro cells and routing paths well. This helps you get the best results from the epm7256src208-7.

Performance

The epm7256src208-7 stands out for its speed and reliability. You get a fast 5 ns pin-to-pin delay. This means your signals move quickly through the chip. You can use the epm7256src208-7 in real-time systems or high-speed data paths. The device supports 5V operation, so it fits with many standard circuits.

Here is a quick look at the performance highlights:

Feature	Value
Pin-to-Pin Delay	5 ns
Maximum I/O Pins	164
Operating Voltage	5V
Macro Cells	256

You can trust the epm7256src208-7 for stable operation. The non-volatile memory keeps your logic safe even if you lose power. This cpld gives you both speed and security for your digital designs.

Applications

Typical Uses

The epm7256src208-7 can be used in many projects. It is good for jobs that need fast and steady logic. You will find it where signals need to be controlled or parts must connect. Here are some ways people use the epm7256src208-7:

Telecommunications equipment uses it to control and route signals.
Industrial automation systems use it to control machines and processes.
Embedded controllers use it to handle special logic tasks.
Older networking gear uses it for timing and moving data.
You can make state machines and control logic for hard jobs.
FPGA or ASIC designs use it for extra features and support.
It helps with signal multiplexing and routing data.
System monitoring and safety tasks use it for reliability.

Tip: Pick the epm7256src208-7 if you want a flexible device for many digital jobs.

Example Designs

You will see the epm7256src208-7 in real designs that need custom logic. The table below lists some examples and what the device does:

Application Type	Function Description
Glue Logic	Connects subsystems with different rules or timing. It can make address decoders, bus arbiters, and custom controllers.
Finite State Machines	Runs communication protocols, timing jobs, and control paths that need decisions.
Companion Device	Handles setup steps, starting routines, or changing protocols for bigger FPGAs or ASICs.
Signal Multiplexing	Directs signals in a system, so you need fewer ICs.
System Monitoring	Watches system parts for watchdogs, resets, and power steps.

You can see the epm7256src208-7 works in many kinds of projects. This cpld helps you fix problems in both easy and hard designs. If you need a device for many jobs, the epm7256src208-7 is a good pick.

Programming the CPLD

Programming Methods

You can set up the epm7256src208-7 in a few ways. Most people use in-system programming. This way, you can update the chip while it stays on your board. You do not have to take the chip out. You can also use JTAG to program it. JTAG is an easy way to connect and load your design.

Here is a table that shows the main good and bad points of programming the epm7256src208-7:

Advantages	Disadvantages
High-density logic integration allows compact designs.	Older-generation device may lack advanced features.
In-system programmability enables updates without removal.	PQFP packaging can be challenging to work with.
Fast propagation delays support quick logic operations.	Limited scalability compared to larger FPGAs.
Low-power operation supports energy-efficient designs.	N/A

Tip: In-system programming helps you save time when you need to change your logic for new uses.

Tools and Software

You need special tools to program the epm7256src208-7. The most used software for this chip is:

Quartus Prime
Modelsim

Quartus Prime lets you write and check your logic. Modelsim helps you test your design before putting it on the chip. These tools work for many projects. You can use them to make sure your logic is right and your programming works.

Step-by-Step Guide

You can follow these steps to program the epm7256src208-7:

Open Quartus Prime and make a new project.
Write your logic design in the editor.
Compile your project to look for mistakes.
Connect your programmer to the JTAG pins on the epm7256src208-7.
Use Quartus Prime to put your design on the chip.
Test your board to see if your project works.

Always check your connections before you start programming. This helps you stop mistakes.

Troubleshooting

Sometimes, programming the epm7256src208-7 does not work right. You might see errors or your project may not run. Here are some tips to help you fix problems:

Check all power and ground wires.
Make sure you use the right JTAG pins.
Look for error messages in Quartus Prime.
Try a new cable if programming does not work.
Recompile your design if you change your logic.

If you follow these tips, you can fix most programming problems. You will get your project working on the epm7256src208-7 soon.

Comparison and Alternatives

Similar CPLDs

You may want to compare the epm7256src208-7 with other CPLDs before you choose it for your project. Many devices offer similar features. Some popular options include the EPM7128S, EPM7064S, and XC9572XL. Each device has its own strengths. You should look at the number of macro cells, I/O pins, and speed.

Here is a table to help you see the differences:

Device	Macro Cells	I/O Pins	Pin-to-Pin Delay	Supply Voltage	Package Type
epm7256src208-7	256	164	5 ns	5V	208-RQFP
EPM7128S	128	92	7.5 ns	5V	100-PQFP
EPM7064S	64	48	7.5 ns	5V	44-PLCC
XC9572XL	72	66	5 ns	3.3V	100-TQFP

Tip: Always check your project needs before you pick a device. The epm7256src208-7 gives you more macro cells and I/O pins than most similar CPLDs.

Pros and Cons

You should know the main pros and cons of the epm7256src208-7. This helps you decide if it fits your project.

Pros:

You get a high number of macro cells for complex logic.
The device offers fast pin-to-pin delay for real-time tasks.
You can use many I/O pins for wide connections.
The 5V operation matches many older systems.
Non-volatile memory keeps your design safe after power loss.

Cons:

The 208-RQFP package can be hard to solder by hand.
The device uses more board space than smaller CPLDs.
Newer devices may offer lower power use or more features.

Note: If you need a large, fast, and reliable CPLD, the epm7256src208-7 stands out. For small or low-power projects, you may want to look at other options.

Resources

Datasheets

You need the right datasheet to use the epm7256src208-7. The datasheet has all the important facts about the chip. It shows pin diagrams, electrical limits, and timing charts. Always look at the datasheet before you start building. This helps you avoid mistakes and keeps your project safe.

Here are some helpful datasheet links for the epm7256src208-7:

Tip: Save the datasheet on your computer. You will need it many times when you work with the epm7256src208-7.

Resource Type	Link
Application Notes	Altera MAX 7000 Application Notes
Programming Guide	JTAG Programming Guide
Community Forums	Intel FPGA Community

Frequently Asked Questions

What is the main use of the EPM7256SRC208-7 CPLD?

You use the EPM7256SRC208-7 CPLD to build custom digital logic. It helps you connect, control, and process signals in electronic systems. Many engineers use it for glue logic, state machines, and signal routing.

How do you program the EPM7256SRC208-7?

You program this CPLD using JTAG. You connect a programmer to the JTAG pins. Quartus Prime software lets you write, compile, and load your design onto the chip.