AT28C256F-15PU

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The AT28C256F-15PU is an electrically programmable read only memory (EPROM) device. It is a non-volatile, off-chip memory that is commonly used for storing data, programs, and other information in embedded systems, such as cellular phones, personal computers, and machine control systems. This article will cover the application field and working principle of the AT28C256F-15PU.

Overview of the AT28C256F-15PU

The AT28C256F-15PU is a 32Kx8, 256-kilobit EPROM, with a CMOS technology process. The device has a fast access time of 150 nanoseconds (ns). It is also power-efficient, with a minimal current consumption of 10mA at a DC operating voltage of 5V. The operating temperature range of the device is -40C to +85C.

Application Field of the AT28C256F-15PU

The AT28C256F-15PU is a versatile device with a variety of applications. It is commonly used in control systems, such as smart home systems, where program storage is required for operational data and settings. Its various features make the device suitable for automotive applications, such as engine control systems and powertrain control modules. It is also used in computers, where it is used to store BIOS and other software programs. Another application of the device is in the medical field, where it is used to store patient medical records. Additionally, the device is used in industrial automation systems, such as PLCs, and in communication systems, such as cellular phones and routers.

Working Principle of the AT28C256F-15PU

The AT28C256F-15PU operates on a three-level architecture scheme. It consists of a control section, an address section and a data section. The control section of the device includes logic control gates, control circuitry, and registers. The control logic gates are used to generate the appropriate control signals that are sent to the other sections to control the read, write, program, and erase operations. The control circuitry includes decoders and latches that are used to decode the control signals and latch the given addresses. The address section provides the necessary address bits for the various read and write operations. The data section contains the main memory, which is made up of an array of 256Kx8, non-volatile cells. Each cell consists of a charge pump, bit line, and control gates. The charge pump is used to inject or remove charges from the memory cell in order to store data. The bit line is used to access the cell and the control gate is used to control the operation of the cell.

Conclusion

The AT28C256F-15PU is a versatile and efficient device that is commonly used in a variety of applications in both industrial and consumer systems. It has an operating temperature range of -40C to +85C, and an access time of 150ns. The device operates on a three-level architecture scheme consisting of a control section, an address section and a data section. The data section consists of an array of 256Kx8, non-volatile cells, which are used for storing data, programs, and other information.

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