EPM7064BFC49-3

Embedded - CPLDs (Complex Programmable Logic Devices) are a type of integrated circuit designed to be reconfigured or customized for specific tasks. The EPM7064BFC49-3 is one such device. It is a member of the Altera MAX 7000S family of CPLD devices, and is classified as a 7.5k gate device. It is capable of performing logic functions, arithmetic and shift operations, sequence control, Address Decode, and multiplexer functions.

Due to its versatility, the EPM7064BFC49-3 can be applied to a variety of application fields such as: data busses, peripheral control, system sequencing, data statistics, coded switch matrices, high-speed I/O address decoding, RAM/ROM/EPROM decoding, FIFO control, RAM page selection, pattern recognition, and various other logic functions.

The EPM7064BFC49-3 uses an Altera-specific programming language, known as \'ABEL\', which is a hardware description language based on VARIABLE logic equations. This programming language is used to define the logic equations of the device, as well as to produce the associated hardware configuration files, which can then be programmed into the device. ABEL is an intuitive language, which allows for the rapidly development of complex logic, and EPM7064BFC49-3 devices.

The timing of the functions and operations is also programmable, which allows for fine-tuning the outputs of the device, and this is accomplished via the "REGisters" or REG file, which essentially programs the clock behavior of the device. Additionally, the EPM7064BFC49-3 has an on-chip clock oscillator which allows for the creation of a synchronous logic environment, and an address decoder which can be used for system expansion.

As a 7.5k gate device, the EPM7064BFC49-3\'s working principle is relatively simple. Its operation is divided between two main components: the Data Memory (DM) and the Array of Logic Array Blocks (LABs). The DM portion of the device\'s architecture is responsible for providing RAM and ROM functionality, while the LAB is the core logic portion. The LAB is composed of logic cells, latches, and storage elements known as flip-flops, which act as the basic building blocks for the logic functions.

The DM and the LAB portions of the EPM7064BFC49-3 communicate with each other via a global data bus, which is used to move data and control signals between the two components. The bus also provides the ability to program the device, as well as to store and access data stored in the device\'s memory.

The EPM7064BFC49-3 is also capable of being reprogrammed, as its architecture consists of on-chip Boot and Synchronization (BOS) circuits. These circuits enable the device to be reprogrammed without having to be powered down, and without requiring an external programmer.

Overall, the EPM7064BFC49-3 is an extremely versatile device which allows for the design of custom logic functions and operations, which can be applied to a wide variety of applications. Its powerful on-chip logic components and its programmability make it an ideal choice for embedded logic designs.