NM93C56EM8

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The NM93C56EM8 is an 8-bit, 32K-bit I2C-compatible serial E²PROM which uses a simple 2-wire serial interface to communicate with the host processor. It is often used to store configuration, calibration, security or system related information in embedded applications where communication interface, such as I2C, is available. It has industry-leading endurance and data retention, making it a preferred choice in applications requiring reliable data storage. The device provides fast access time with excellent reliability, longword erase and write capability.

The NM93C56EM8 can be used for both secure and non-secure applications. It features software data write-protection, default data write protection and a password verification mechanism for secure applications. It also offers data retention of up to 100 years, making it ideal for long-life electronics products.

Applications of NM93C56EM8 include date storage in test and measurement instruments, data storage in security systems, secure data storage in industrial control applications, and more. The device is also used to store calibration data in medical and industrial instruments, user-generated code in automotive systems, and broadcast codes in home and office appliances.

The working principle of the NM93C56EM8 is based on a self-timed write cycle. The write cycle consists of an internal erase followed by a subsequent write operation. The write cycle is initiated by the host system either by sending the EEPROM_READ command or by the setting of the EEWE bit. The erase and write operations take place through an internal write circuit, which consists of a write time generator, an address counter and an on-chip data RAM. The internal write circuit is programmed to write data to the desired address. The write cycle is self-timed by the write time generator, which allows new data to be written without the need of external timing signals.

The NM93C56EM8 also features an on-chip voltage detection circuit which is designed to detect the supply voltage level of the system it is connected to. This allows the device to enter a low-power mode in order to conserve power when the supply voltage is low. The device can also detect the version of the I2C bus it is connected to in order to communicate with the host system according to the supported I2C protocol.

In addition, the NM93C56EM8 offers a pin-protection feature which ensures that the device is not subject to accidental write operations while pins are briefly touched or exposed to any other similar event. The device also features an optional power-down mode which is used to save energy when the device is not in use.

In summary, the NM93C56EM8 is an 8-bit, 32K-bit I2C-compatible serial E²PROM that can be used for both secure and non-secure applications. Its features include software write-protection, default data write-protection, a voltage detection circuit, a pin-protection feature, and an optional power-down mode. It has an industry leading endurance and data retention, making it a preferred choice for applications requiring reliable data storage.

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