93AA66C-I/SN

Introduction

The 93AA66C-I/SN is developed by Atmel Inc. and is a Serial peripheral interface (SPI) EEPROM device. It consists of a high speed serial EEPROM which communicates via an industry-standard SPI bus. The 93AA66C can be used in many different applications, such as non-volatile data storage, register file storage, configuration storage, board-level testing, manufacturing information storage, and many more.

Application Field

The 93AA66C-I/SN offers high performance, energy efficiency and scalability in many applications. It is commonly used in embedded systems with tight power requirements, as it offers good performance with minimal power consumption. It is also suitable for small or medium memory requirements, such as SCADA systems and industrial controllers.

In addition to SCADA systems and industrial controllers, the 93AA66C-I/SN can also be used for data logging, battery-backed RAM, interrupt request storage, and nonvolatile parameter storage. It is also suitable for automotive applications, where it can be used for engine control, remote key storage, and body control modules.

Working Principle

The 93AA66C-I/SN operates on a three-wire serial interface, consisting of clock (SCK), data-in (DI) and data-out (DO). Data is stored in EEPROM, a type of non-volatile random access memory (RAM). Data stored in EEPROM memory is permanent and can be read or written multiple times without any data loss or degradation. The 93AA66C-I/SN uses an industry-standard method for controlling the interface, known as “Software Protocol”. This method requires the device to be configured for the SPI before operation can start.

Data is written to the 93AA66C-I/SN by first selecting the device by sending the device ID to the EEPROM, which is then followed by sending a write command. The write command consists of an 8 bit instruction code, and two addressing bytes. The instruction code tells the device what operations to do. After that, data is written to the EEPROM bit-by-bit. Data is then written to the EEPROM and is stored until the device is powered down.

Data is then read from the EEPROM using a similar sequence of commands and steps. The read command consists of the same instruction and address information as the write command, with the data to be read added. After the command is sent, the data is read bit-by-bit from the EEPROM. The read data can then be used for further processing.

Conclusion

In conclusion, the 93AA66C-I/SN is a serial peripheral interface (SPI) EEPROM device that provides nonvolatile memory storage. It is suitable for use in a variety of applications, including SCADA systems and industrial controllers, automotive applications, and data logging. It operates on a three-wire serial interface and uses a software protocol for communication with the device. Data is written and read using a sequence of commands and steps.