AT28C256-25JC

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AT28C256-25JC is a large-capacity EEPROM integrated circuit (IC) developed by the STMicroelectronics Corporation, a major Danish component company. It has a storage capacity of 256Kbits (32Kbytes) and is primarily used in high-end industrial applications such as automotive, telecoms and consumer electronics.

AT28C256-25JC belongs to the serial EPROM family and is based on the standard I2C (Inter-Integrated Circuit) bus interface. This allows it to communicate with other devices, such as microprocessors, directly through its serial data line. It is capable of transmitting information with a maximum speed of 400kHz.

The AT28C256-25JC is a model that is specifically designed for low power consumption, making it an ideal choice for use in applications that require low power consumption. It also offers the additional benefit of being able to operate with a very low supply voltage of 2.7V.

The primary function of the AT28C256-25JC is to store data that it has received from its peripherals. This data can then be retrieved later for further processing. The data is stored in an array of cells that each have a capacity of 8 bits.

The AT28C256-25JC uses a page write method to store data. In this method, the data is divided into 8-bit pieces and written to a page at once. The page write method ensures that the data is written quickly and accurately without the need for any additional programming cycles.

The AT28C256-25JC features an array of 16 address lines that allow it to address up to 2^16 or 65,536 different locations. In order to access these locations, the IC uses an on-chip address decode circuit which interprets the address signals sent by its peripheral devices.

The AT28C256-25JC also incorporates an Automatic Self-Timed Write (ASTW) circuit which ensures that data is written to its memory in a consistent and reliable manner. The ASTW circuit constantly monitors the power supply and temperature as well as the write cycle status to ensure that data is written properly.

To ensure data integrity, the AT28C256-25JC is also equipped with an on-board CheckSum circuit. This circuit periodically verifies the data stored in the IC’s memory to ensure that it is accurate and up to date.

The AT28C256-25JC is a versatile and reliable IC that can be used in a wide range of applications due to its high storage capacity, low power consumption and advanced features such as ASTW and CheckSum. Due to its wide range of features and advanced performance, it is a favourite amongst embedded system designers and engineers.

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