93LC56AT/ST is a 16K-bit Electrically Erasable Programmable Read-Only Memory (EEPROM) chip manufactured by Atmel that is designed for use in a wide variety of embedded applications. The device is offered in five package options ranging from 8 pins to 16 pins in both leaded and lead-free options. The primary operational and functional aspects of this type of memory can be broadly classified into architecture, application field, working principle and access times.

Architecture

The 93LC56AT/ST EEPROM chip is organized as 8K-bit x 16, including two 64K-bit data registers, two page registers, two parallel I/O buses, and two 65K-bit memory arrays. The two page registers provide 8 address bits and two page bits. The device includes an 8-bit Program control register, a 10-bit control register, a 10-bit status register, and an 8-bit Mode register. The 16-pin package includes an enable, write protect, and chip select pins. The 93LC56AT/ST also has a low-power 256 KHz internal oscillator for use in low power standby operating modes.

Application Fields

The 93LC56AT/ST EEPROM chip is used in a wide variety of embedded applications, including automotive, medical, consumer and industrial. Applications for the chip include remote control systems, security products, access control systems, data logging systems, personal digital assistants, digital cameras, HVAC control systems, industrial automation systems, metering applications, industrial control systems, personal medical devices and aerospace systems.

Working Principle

The 93LC56AT/ST EEPROM chip works on the principle of storing and retrieving data in the form of voltage pulses. The chip features data storage in the form of non-volatile memory, meaning it remains programmed until erased by exposing it to an external electrical field. The device is then programmed by applying a certain voltage to specific terminals. Data can be read from the chip through the parallel I/O buses, while write operations are accomplished by applying a programming voltage to specific pins while applying the write data on the input pins of the device. The chip is also capable of self-reading, meaning it can read its own memory without any external programming.

Access Times

The access time for the 93LC56AT/ST EEPROM chip is typically less than 200 microseconds. This low access time, combined with its versatility and low power consumption makes the chip an ideal choice for embedded applications that require frequent data read/write operations, such as digital cameras, HVAC control systems, and consumer electronics.

The 93LC56AT/ST EEPROM chip is a versatile and low-power semiconductor device that is extensively used in embedded applications. With its small size and high data storage capacity, the device makes an ideal choice for applications that require frequent data read/write operations. Its simple architecture and fast access time further add to its appeal.