AK93C45BL

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The AK93C45BL is a non-volatile, 8-bit CMOS EEPROM that has been specifically designed for automotive applications. It’s an 8K x 8 low voltage device which is organized into 256 pages of 32 bytes each. AK93C45BL offers an extended voltage range and excellent electrical characteristics such as quicker programming, efficient memory management and data security against unintentional erasures.

The AK93C45BL is designed to operate from a single power supply which can be either a 2.7V - 5.5V or a 6.0V - 11.5V supply. It offers 2 bytes write cycle time, 500KHz I2C-bus transfer rate, -65°C to +150°C operating temperature range and up to 100 years Data Retention (T.R.).

The AK93C45BL features features a wide range of features, including Sequential Byte Write Mode, Block-Lock Protection, Selectable 64-Byte Page Write Mode, Random Read and Write Functions, The 2-Wire Serial Interface, and a 256-byte Page Mode for efficient memory management.

The AK93C45BL is suitable for a variety of automotive applications, such as airbag control, dashboard and instrument cluster, anti-theft system, immobilizers, medical device, HVAC and engine control, as well as various other applications.

Let’s take a look at the AK93C45BL’s working principle. The AK93C45BL uses a dual port architecture for data storage and retrieval. Data is written to one port and is immediately available on the other port with no wait states. All data is stored on the non-volatile memory and is accessible through the I2C-bus two-wire serial interface. Data can be written and read in 8-bit bytes in either Sequential or Random Location Addressing modes.

The Sequence Data Write works in the same way as random write addressed but with an additional FLAG bit. When the FLAG bit is set, AK93C45BL will continue to write until the entire page is filled. Once the page is filled, the FLAG bit is automatically reset.

The AK93C45BL also offers block write options. It is possible to write up to 32 bytes at once, and data can be securely stored in data blocks for protection against unintentional erasure. This is achieved by setting a block lock code in block locations.

In conclusion, the AK93C45BL has proven itself as a great choice for automotive applications, as it offers low power consumption, excellent electrical characteristics, and a multitude of security features. Its ability to store large amounts of data quickly and reliably make it a top choice for automotive applications and other applications where data integrity is important.

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