on March 7th 1,688

EPM7064STC100-7 CPLD: Features, Applications, and In-System Programming Guide

The EPM7064STC100-7 is a powerful chip from Intel's MAX® 7000S series, designed to handle complex tasks in electronic devices. This guide discusses the main features and uses of the EPM7064STC100-7, emphasizing its ability to be reprogrammed easily, its quick operation, and its flexible design. Ideal for many different technologies, from small gadgets to big industrial machines, this chip is a key piece for building advanced digital circuits.

Catalog

EPM7064STC100-7 Description

The EPM7064STC100-7 is a Complex Programmable Logic Device (CPLD) from Intel's MAX® 7000S series. It has 64 macrocells and 1,250 gates, which help in building complex digital circuits. This chip runs at a maximum speed of 166.7 MHz, with a signal delay of 7.5 nanoseconds (ns). It has 68 input/output (I/O) pins that work with 3.3V and 5V logic, making it easy to use in different circuits. A key feature is its 5.0V in-system programmability (ISP) through a JTAG interface (IEEE 1149.1). This means you can reprogram it without removing it from the circuit, making testing and updates easier. It comes in a 100-pin Thin Quad Flat Pack (TQFP), which is a compact, surface-mount package. This CPLD is used in embedded systems, digital signal processing, communication devices, and industrial automation.

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EPM7064STC100-7 Features

• High-Density Logic: The EPM7064STC100-7 is designed with 64 macrocells and 1,250 usable gates, making it highly suitable for implementing complex logic functions in digital circuits. This high-density architecture enables to create intricate logic designs while maintaining efficiency in programmable logic operations. The well-optimized macrocell structure ensures effective utilization of available resources, supporting advanced combinational and sequential logic implementations.

• Fast Performance: Built for high-speed processing, the EPM7064STC100-7 operates with a maximum internal frequency of 166.7 MHz, allowing for swift execution of logic functions. Its propagation delay of 7.5 ns ensures minimal latency. This rapid switching capability enhances the device’s ability to handle high-speed data processing, signal conditioning, and control tasks efficiently, making it a reliable choice for demanding digital systems.

• Versatile I/O: With 68 programmable input/output pins, the EPM7064STC100-7 offers exceptional flexibility for integration into various circuit designs. Supporting both 3.3V and 5V logic levels, it allows seamless compatibility with different system voltages, eliminating the need for additional voltage level shifters. This adaptability makes it well-suited for applications in mixed-voltage environments, ensuring broad applicability across embedded systems, industrial controls, and communication networks.

• In-System Programmability (ISP): One of the advantages of the EPM7064STC100-7 is its 5.0V in-system programmability (ISP), facilitated through an IEEE Std. 1149.1 JTAG interface. This feature allows to reprogram and modify logic functions without desoldering or physically removing the device, simplifying maintenance, debugging, and iterative development. The ISP capability reduces downtime and enhances the flexibility of firmware updates, making it invaluable for dynamic and reconfigurable digital designs.

EPM7064STC100-7 CAD Models

EPM7064STC100-7 Symbol

EPM7064STC100-7 Footprint

EPM7064STC100-7 3D Model

EPM7064STC100-7 Block Diagram

The EPM7064STC100-7 block diagram shows how the chip's logic elements are connected and controlled. It has four Logic Array Blocks (LABs), labeled A, B, C, and D, each containing 16 macrocells. These macrocells perform logic functions, and they connect through a Programmable Interconnect Array (PIA), which allows flexible routing of signals. Each LAB is linked to an I/O Control Block, handling up to 16 input/output pins per LAB. The diagram also shows global control signals (GCLK1, GCLK2, OE1, and GCLRn) that help manage clocking and reset functions for the chip. Some logic gates process these signals before they reach different parts of the system. The design of the EPM7064STC100-7 allows it to be used in various programmable logic applications, such as state machines, address decoding, and other custom digital circuits. Its flexible interconnections ensure efficient signal flow and reliable operation.

EPM7064STC100-7 Specifications

Type	Parameter
Manufacturer	Altera/Intel
Series	MAX® 7000S
Packaging	Tray
Part Status	Obsolete
Programmable Type	In System Programmable
Delay Time tpd(1) Max	7.5 ns
Voltage Supply - Internal	4.75V ~ 5.25V
Number of Logic Elements/Blocks	4
Number of Macrocells	64
Number of Gates	1250
Number of I/O	68
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Surface Mount
Package / Case	100-TQFP
Supplier Device Package	100-TQFP (14x14)
Base Product Number	EPM7064

EPM7064STC100-7 In-System Programming (ISP) Sequence

The EPM7064STC100-7, a part of the MAX 7000S CPLD family, follows a six-stage In-System Programming (ISP) sequence to ensure correct configuration. This process enables you to program the device without removing it from the circuit board. The ISP process involves shifting instructions, addresses, and data through the TDI (Test Data In) pin while retrieving responses via the TDO (Test Data Out) pin.

The first stage, Enter ISP, ensures that I/O pins transition smoothly from user mode to ISP mode and requires approximately 1ms. This is followed by Check ID, where the silicon ID of the device is read to confirm the correct target. Next, the Bulk Erase stage shifts in erase instructions and applies a 100ms erase pulse, clearing all existing data in the EEPROM cells. The Program stage follows, where addresses and data are sequentially shifted into the device, applying programming pulses to configure the EEPROM cells. Each address must be programmed individually, making this step time-consuming depending on the number of EEPROM cells in the device.

Once programming is complete, the Verify stage ensures that data has been stored correctly. Here, read pulses are applied to EEPROM cells, and the retrieved data is compared to the expected values. If discrepancies are found, reprogramming may be necessary. Finally, the Exit ISP stage ensures that I/O pins transition back to user mode, requiring another 1ms. The total programming or verification time is influenced by two main factors: pulse time, required for EEPROM erase, programming, and read operations, and shifting time, which depends on the TCK (Test Clock) frequency and the number of cycles needed to transfer instructions, addresses, and data. Since different ISP-capable devices have varying numbers of EEPROM cells, both total fixed and variable times are unique to each device. The total ISP time can be calculated as a function of TCK frequency, the number of target devices, and the EEPROM architecture.

EPM7064STC100-7 Applications

Embedded Systems

The EPM7064STC100-7 is widely used in embedded system applications, where it serves as a flexible programmable logic solution for controlling various peripherals, processing signals, and implementing custom protocols. Its ability to interface with microcontrollers and sensors allows to optimize system performance while maintaining a compact footprint. With its high-speed operation and low power consumption, it is an excellent choice for embedded applications that require reliability and efficiency.

Digital Signal Processing (DSP)

In digital signal processing, the EPM7064STC100-7 plays a role in implementing filters, signal modulation, and various mathematical functions. Its fast switching speeds and low propagation delay make it suitable for handling high-frequency data processing tasks, ensuring minimal latency in signal conversion and manipulation. It is commonly used in audio processing, telecommunications, and radar systems.

Data Communications

The EPM7064STC100-7 is extensively used in networking and data communication systems due to its ability to handle logic-intensive operations like data routing, buffering, and error correction. Its programmable I/O capabilities allow it to adapt to different communication protocols, making it a valuable component in Ethernet switches, routers, and telecommunication infrastructure. Its support for in-system programmability (ISP) also enables field updates, improving adaptability in dynamic networking environments.

Industrial Automation

Industrial applications demand high reliability, durability, and low power consumption, making the EPM7064STC100-7 a preferred choice for programmable logic controllers (PLCs), motor control systems, and automated testing equipment. With its JTAG-based in-system programmability, it provides the ability to refine automation processes without requiring physical removal or redesign. Its versatility in voltage compatibility also makes it suitable for interfacing with a wide range of sensors and actuators used in industrial settings.

EPM7064STC100-7 Similar Parts

• EPM7064STC44-10N

• EPM7064STC100-6

• EPM7064STC100-10

EPM7064STC100-7 Advantages

In-System Programmability (ISP)

One of the biggest advantages of the EPM7064STC100-7 is its ability to be reprogrammed while still mounted in the system. This eliminates the need for removing the chip for updates, reducing maintenance time and improving efficiency. You can implement design modifications without interrupting production, making it a cost-effective solution for long-term projects.

High-Speed Performance

The device supports a high internal operating frequency of up to 166.7 MHz, allowing for fast data processing and response times. This makes it ideal for applications requiring signal processing, logic control, and high-speed interfacing, ensuring smoother and more reliable system operation.

Versatile I/O Support

With up to 68 configurable I/O pins and compatibility with multiple voltage levels (3.3V, 5V, and tolerant options for 2.5V, 3.3V, and 5V), the EPM7064STC100-7 offers flexibility in system design. It allows seamless integration into various circuits and supports mixed-voltage environments, reducing compatibility issues with other components.

Reliable Operation Across Environments

Designed to function within a temperature range of 0°C to 70°C, the EPM7064STC100-7 ensures consistent and stable operation in a variety of conditions. This reliability makes it a preferred choice for applications where environmental stability is required, such as industrial automation, telecommunications, and embedded control systems.

EPM7064STC100-7 Package Pin-Out Diagram

The EPM7064STC100-7 is a CPLD (Complex Programmable Logic Device) from Altera’s MAX 7000S series, housed in a 100-pin Thin Quad Flat Package (TQFP-100). This package type is designed for surface-mount applications, offering a balance of high pin density and compact size. The pin-out diagram follows a counterclockwise numbering scheme, with Pin 1 located at the top-left corner of the package. Moving counterclockwise, the first 25 pins occupy the left side, pins 26 to 50 are positioned along the bottom edge, pins 51 to 75 continue along the right side, and pins 76 to 100 are distributed along the top edge. The TQFP-100 package features thin leads extending outward from all four sides of the flat, square body. This design enhances surface-mount compatibility while maintaining adequate pin spacing for easy soldering and assembly. The lead pitch (distance between adjacent pins) is typically 0.5mm, optimizing signal integrity while minimizing the overall footprint.

EPM7064STC100-7 Manufacturer

The EPM7064STC100-7 is a CPLD (Complex Programmable Logic Device) originally developed by Altera, a semiconductor company known for its programmable logic solutions. In 2015, Intel acquired Altera, integrating its FPGA and CPLD product lines into Intel’s Programmable Solutions Group (PSG). Since then, the EPM7064STC100-7 has been branded under Intel, although it has been marked as obsolete. Intel, as the manufacturer, maintained the legacy support for MAX® 7000S series CPLDs, including this model, while gradually shifting its focus toward modern FPGA and programmable logic technologies.

Conclusion

The EPM7064STC100-7 brings together complex functions, fast performance, and easy updates in one chip, proving its value in challenging digital setups. This guide has shown how it works, what it’s used for, and how it fits into various electronic systems. It helps make devices run smoothly and efficiently, proving that it's still very useful for many applications. This guide provides a clear view of how the EPM7064STC100-7 can help improve electronic designs and system operations effectively.

Datasheet PDF

EPM7064STC100-7 Datasheets:

MAX 7000.pdf