on April 25th 2,146

EPM7256SQC208-10 Guide: Features, Pinout, Programming, Applications and Datasheet

This guide is all about the EPM7256SQC208-10, a type of programmable chip made by Intel (originally by Altera). It comes from the MAX® 7000S family and is known for being fast, reliable, and easy to program while it’s already inside a device. This article explains what the chip does, how it works, where it's used, and why it’s a great choice if you need a strong and flexible logic device for your project.

Catalog

EPM7256SQC208-10 Overview

The EPM7256SQC208-10 is part of Intel's (formerly Altera) MAX® 7000S family, a high-performance CPLD range known for its robust programmability and logic optimization capabilities. This model boasts about 5,000 usable gates and includes 256 macrocells, housed within a 208-pin Plastic Quad Flat Pack (PQFP). It operates at a frequency up to 128.2 MHz and supports a 5.0 V operating voltage, with a maximum propagation delay of 7.5 ns and an operational temperature ceiling of +70°C. A key feature is its in-system programmability through a built-in IEEE Std. 1149.1 JTAG interface, enabling dynamic configuration. The MAX® 7000S devices are fabricated using advanced CMOS technology, offering features such as pin-to-pin logic delays as quick as 5 ns and counter frequencies reaching up to 175.4 MHz. The family presents a variety of package options and is designed with programmable macrocell flip-flops that contribute to substantial power savings over 50% reduction in some instances. Additionally, it includes a security bit for the protection of proprietary designs.

If your organization needs a solid programmable logic solution, the EPM7256SQC208-10 is a reliable choice, so contact us today to secure your bulk order.

EPM7256SQC208-10 CAD Models

EPM7256SQC208-10 Symbol

EPM7256SQC208-10 Footprint

EPM7256SQC208-10 3D Model

EPM7256SQC208-10 Features

• High Logic Density: The EPM7256SQC208-10 provides about 5,000 usable gates and contains 256 macrocells. This high logic capacity makes it ideal for implementing complex combinational circuits and efficient logic integration in compact designs.

• Fast Performance: With a maximum operating frequency of 128.2 MHz and a propagation delay of just 7.5 ns, this CPLD ensures rapid processing and quick response times, good for high-speed applications.

• In-System Programmability (ISP): Equipped with an IEEE Std. 1149.1 JTAG interface, the device allows for in-system programming and testing without the need for physical removal, facilitating iterative development and updates.

• Advanced Architecture: Utilizing Altera's second-generation MAX architecture and fabricated with advanced CMOS technology, the EPM7256SQC208-10 offers enhanced performance and durability, ensuring reliability in various operational environments.

• Power Management: The device features programmable power-saving modes that can reduce power consumption by over 50% per macrocell, supporting energy-efficient designs and prolonging battery life in portable applications.

• Security Features: A programmable security bit provides protection against unauthorized access and copying of proprietary designs, safeguarding intellectual property effectively.

• Wide Operating Conditions: Operating at 5.0 V and capable of functioning in temperatures up to +70°C, this CPLD adapts to diverse environmental conditions, making it suitable for both industrial and commercial applications.

• Flexible I/O Standards: Supports MultiVolt™ I/O interface operations, compatible with both 3.3 V and 5.0 V systems. This flexibility allows seamless integration with existing and new hardware, reducing system complexity and costs.

• Design Support: The EPM7256SQC208-10 is supported by a range of design tools and programming hardware options, simplifying the development process and allowing to focus on innovation rather than compatibility issues.

EPM7256SQC208-10 Pinout Diagram

This diagram shows the pin layout for the EPM7256SQC208-10 chip from Altera. The chip has 208 pins, arranged on all four sides in a square shape. Pin 1 starts at the top-left corner and the numbers go around the chip in a counterclockwise direction, down the left side to Pin 53, across the bottom to Pin 105, up the right side to Pin 157, and back to the top-right. The labels help you know where to start and how to place the chip correctly on a circuit board. The name in the center, “EPM7256E / EPM7256S,” means this layout works for both chip versions. This diagram is important when connecting power, signals, or programming lines to the chip.

EPM7256SQC208-10 Block Diagram

The block diagram of the EPM7256SQC208-10 shows how the chip is organized to handle digital logic tasks. It has four main logic blocks called LAB A, B, C, and D. Each block contains 16 macrocells, which are the basic building parts that do the logic work. So in total, there are 64 macrocells inside the chip. Around these logic blocks are I/O control blocks, which connect the chip to the outside world through input and output pins. Each control block manages 6 to 16 pins, letting signals go in or out of the chip as needed.

At the center is the Programmable Interconnect Array (PIA), which acts like a highway system, letting signals move between logic blocks and I/O pins. This allows you to route data any way you need for your design. At the top left, the diagram shows some control inputs like global clock (GCLK), output enable (OE), and clear (GCLR). These signals help manage the timing and behavior of the logic circuits across the chip.

EPM7256SQC208-10 Specifications

Type	Parameter
Manufacturer	Altera/Intel
Series	MAX® 7000S
Packaging	Tray
Part Status	Obsolete
Programmable Type	In System Programmable
Delay Time tpd(1) Max	10 ns
Voltage Supply - Internal	4.75V ~ 5.25V
Number of Logic Elements/Blocks	16
Number of Macrocells	256
Number of Gates	5000
Number of I/O	164
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Surface Mount
Package / Case	208-BFQFP
Supplier Device Package	208-PQFP (28x28)
Base Product Number	EPM7256

EPM7256SQC208-10 Applications

Industrial Automation

The EPM7256SQC208-10 is extensively used in industrial automation systems. Its high logic density and fast performance enable complex control tasks, interfacing seamlessly with sensors and actuators. This CPLD is ideal for enhancing precision and efficiency in production lines, process control systems, and robotic applications.

Telecommunications

In telecommunications, this CPLD excels in managing data flow and signal integrity across networks. It supports functions like signal conversion, routing, and processing in switches and routers, ensuring robust and efficient communication infrastructures.

Automotive Systems

In the automotive industry, this device contributes to the reliability and sophistication of systems such as engine management units, infotainment systems, and driver-assistance technologies. Its robust performance under varying conditions makes it suitable for safety-critical applications.

Medical Devices

The precision and programmability of the EPM7256SQC208-10 make it valuable in medical equipment, where accurate control and reliable operation are important. It is used in devices for monitoring patient vitals, managing diagnostic instruments, and automating treatment delivery.

Aerospace and Defense

In aerospace and defense, the EPM7256SQC208-10 is employed in systems requiring high levels of reliability and performance, such as satellite communications, navigation aids, and military hardware controls. Its ability to operate under extreme conditions is beneficial.

Educational and Research Institutions

This CPLD is also popular in educational settings and research projects, where its reprogrammability and flexibility facilitate experimentation and learning in digital design and electronics. It allows to prototype and test various logic designs efficiently.

EPM7256SQC208-10 Similar Parts

• EPM7256ERC208-12

• EPM7256SQC208-15

• EPM7256EQC160-20

EPM7256SQC208-10 Programming Steps

1. Enter ISP Mode

This initial step is important as it transitions the CPLD from normal operation mode to In-System Programming (ISP) mode. This is achieved by sending a specific command through the JTAG interface. During this process, all I/O pins of the CPLD are tri-stated (disabled) to avoid any interference or conflicts with other circuit components. The transition into ISP mode prepares the device for safe programming and takes about 1 millisecond.

2. Check ID

Once in ISP mode, the system performs an ID check to ensure that the correct device is being programmed. This involves reading the device's unique silicon ID through the JTAG interface. This step is good for verifying that the programming commands and data will be sent to the correct device, preventing erroneous programming and potential device damage.

3. Bulk Erase

Before new data can be programmed, the existing data within the CPLD must be erased. The bulk erase step effectively clears all the programmable cells within the device. This is done by shifting in the erase instruction and then applying a 100-millisecond pulse which erases the entire chip. This step is important to ensure that no remnants of previous configurations interfere with the new programming.

4. Program

This step involves the actual programming of the CPLD where the new configuration data is written into the device. Data and corresponding addresses are shifted into the device through the JTAG interface. Each address and data pair requires a programming pulse to ensure the data is correctly written into the non-volatile memory cells of the CPLD. This step is repeated for each data point across the device's memory map.

5. Verify

Post-programming, it is need to verify that the data has been correctly written to the device. This verification step involves reading back the programmed data from each address and comparing it with the original input data. This step ensures data integrity and confirms that the programming process has been successful without any errors.

6. Exit ISP Mode

The final step in the programming process is to exit the ISP mode and return the CPLD to normal operational mode. This is done by sending another command via the JTAG interface. Upon successful exit, the I/O pins are reactivated, and the device resumes normal function. This step also typically takes about 1 millisecond.

EPM7256SQC208-10 Advantages

Non-Volatile Configuration

The EPM7256SQC208-10 utilizes EEPROM technology, allowing it to store its configuration permanently. This non-volatile nature means the device does not need to reload its configuration data from external memory every time it is powered on. This results in faster startup times and reduces the overall complexity of the hardware design by eliminating the need for additional configuration storage components.

In-System Programmability (ISP)

One of the standout features of the EPM7256SQC208-10 is its support for In-System Programmability. This allows the device to be programmed and reprogrammed while embedded in the end application without needing to be physically removed. This capability simplifies updates and modifications, providing flexibility and ease of use during development and throughout the lifecycle of the product.

High I/O Count and Logic Density

The device offers a substantial amount of logic resources and I/O pins, with 256 macrocells and 164 user I/O pins. This high I/O count and logic density enable the integration of multiple functions into a single chip, facilitating more complex designs while conserving space on the PCB. This advantage is beneficial in applications where board space is at a premium and multi-functionality is important.

Fast Pin-to-Pin Delay

With a maximum pin-to-pin delay of just 10 ns, the EPM7256SQC208-10 can perform high-speed logic operations. This quick response time is great in applications that require rapid processing capabilities, such as high-speed communications or computing, ensuring that the system meets stringent performance criteria.

Wide Voltage Compatibility

The EPM7256SQC208-10 is designed to be flexible in terms of voltage compatibility, supporting internal operation at 5 V and I/O levels at 3.3 V. This dual-voltage capability allows the device to interface easily with both 3.3 V and 5 V systems, reducing the need for voltage level translators and simplifying system design.

EPM7256SQC208-10 Packaging Dimensions

• Package Type: 208-BFQFP (Plastic Quad Flat Package)

• Number of Pins: 208 leads

• Body Size (L × W): 28 mm × 28 mm

• Mounting Style: Surface Mount Technology (SMT)

• Lead Pitch: Typically 0.5 mm between pins (standard for BFQFP)

• Package Material: Plastic

• Package Thickness: Approximately 3.5 mm (varies slightly by manufacturer)

• Thermal Characteristics: No exposed pad; standard ambient dissipation via board

• Tray Packaging: Supplied in trays for volume handling and pick-and-place automation

EPM7256SQC208-10 Manufacturer

The EPM7256SQC208-10 was originally developed and manufactured by Altera Corporation, a leading pioneer in programmable logic devices known for its MAX® 7000S series of CPLDs. In 2015, Altera was acquired by Intel Corporation, one of the world’s largest semiconductor manufacturers. Since the acquisition, Intel has continued to support and integrate Altera’s CPLD and FPGA technologies under its Programmable Solutions Group. The EPM7256SQC208-10 represents Intel’s legacy in offering high-performance, in-system programmable logic solutions tailored for a wide range of industrial, telecommunications, and embedded applications. Though now classified as obsolete, the part reflects Intel’s longstanding commitment to reliable and flexible programmable logic devices.

Conclusion

The EPM7256SQC208-10 is a smart and dependable chip that helps make digital systems run smoothly. It saves power, supports different voltages, and lets you program it while it’s already installed, which makes updates easy. Even though it’s now an older chip, others still use it because it works well in all kinds of systems. If you need a solid chip for controlling logic in your design, this one is a great option. Contact us today if you want to order it in bulk.

Datasheet PDF

EPM7256SQC208-10 Datasheets:

2.73KHz.pdf

EOL 01/Dec/2016.pdf

EOL 21/Nov/2016.pdf

Software Disc 06/Nov/2020.pdf

Cylindrical Battery Holders.pdf

Cylindrical Battery Holders.pdf