EPM7256BFC169-5

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Embedded - CPLDs (Complex Programmable Logic Devices) is a type of programmable logic device that offers increased complexity compared to simpler devices such as PALs, GALs, or FPGAs. The EPM7256BFC169-5 is a programmable logic device in this family. It is designed to provide a versatile, “medium density” platform for digital applications in various market segments such as telecommunications, industrial control, medical, and instrumentation. This article will discuss the EPM7256BFC169-5’s application field and working principle.

Application Field

The EPM7256BFC169-5 is a CPLD that combines the features of the Altera MAX II and EPM7032S families. It is capable of providing up to 72 MHz system clock rate frequency and efficient routing performance. In terms of applications, it is frequently used in industrial control and monitoring, instrumentation, telecommunications, automotive, and medical applications. For example, the EPM7256BFC169-5 is capable of handling gating and routing tasks, frequency/timing, and low-latency ISR generation all in one device. The attached circuit diagram illustrates how the device can be used to generate a variety of control and timing signals. Additionally, the device is designed to support 1.8 Volt, 2.5 Volt and 3.3 Volt devices.

The EPM7256BFC169-5 is also used in telecommunications applications, especially in wireless networks such as GPRS and other standards. The device supports a wide range of wireless communications standards such as GSM, EDGE, 3G/4G, WiMAX, LTE, and Wi-Fi. Furthermore, it has integrated functions to support digital cellular base station design as well as supporting telecom backbone equipment. Since the device offers significant reduced board area and cost, it is often used in telecom applications where small size and power saving is essential.

Working Principle

The EPM7256BFC169-5 has an array of programmable logic elements (LEs) that allow users to fabricate custom logic functions and interconnections. The LEs carry out the logical operations. They are composed of multiple registers, multiplexers, datapath elements, RAM blocks, and fixed-function blocks such as adders or multipliers, depending on the device type. As illustrated in the circuit diagram, the LEs support the implementation of clocked registers and combinational logic operations. Each LE includes a look-up table, RAM, and state elements. This allows for a highly flexible design architecture.

The device also includes I/O elements that signal a variety of connections and states. The I/O elements are essentially tri-state buffers that enable bidirectional communication between the device and external components connected to the CPLD. The I/O elements support a variety of signal protocols such as LVDS, SPI, and I2C. Additionally, the EPM7256BFC169-5 comes with clock resources and power management features that enable efficient design and power saving.

Finally, the device can be configured by programming the device’s internal storage elements. This is achieved by using either a hardware description language (HDL), or by using the on-chip graphical user interface. The on-chip graphical user interface supports various programming languages such as AHDL, VHDL, Verilog, and Altera MaxPlus II. It also provides a built-in scanning program to detect differences between the logic stored in the device and the logic previously stored. This helps to ensure efficient logic debugging.

In conclusion, the EPM7256BFC169-5 is a CPLD in the Embedded - CPLDs (Complex Programmable Logic Devices) family. It is a low-cost device that is ideal for a variety of applications, from industrial control and monitoring to telecommunications. The device comes with an array of programmable logic elements that allow for custom logic functions and interconnections, a variety of I/O elements for signaling between the device and external components, and efficient power management features. Moreover, the device also supports programming by hardware description language and on-chip graphical user interface.

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