AT93C46DN-SH-T Integrated Circuits (ICs)

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AT93C46DN-SH-T is a small memory device intended for use in automotive and other applications requiring reliable data storage. It falls into the category of non-volatile memories, as its stored data survives a power loss event. This device is part of the Atmel AT45D family of memories. AT93C46DN-SH-T is designed for low pin-count applications and enables designers to increase their options for component integration. This memory device is a single-chip solution available in a mould solid package with 8 pins.

Applications

The AT93C46DN-SH-T is suitable for a variety of automotive and other applications requiring reliable storage for program data. Examples of such applications include engine control, transmission control, intrument clusters, safety systems, in-car entertainment (ICE) systems, and other embedded systems.

Features

The AT93C46DN-SH-T features a space-saving 8-pin package and is based on the AT45D family of memory devices. Key features of the AT45D family include:

• Non-volatile, low pin-count design
• 2K bits of EEPROM memory
    
• Silicon-oxide nitride SONOS design
    
• 50 year data retention
    
• Secure and reliable data storage
    
• Serial interface for fast communication

Working Principle

The AT93C46DN-SH-T combines the non-volatile storage of EEPROM with the serial access of a microcontroller interface. This memory device is a single-chip solution with two separate memory blocks, one for code and a second for data. The code block is programmed and verified during production, while the data block is used to store application-specific data, such as program data or security keys.

The device consists of an EEPROM cell array, a write-protect circuit, and a shift register, with a pass-through logic interface. The device has a serial interface that allows a host controller to access the internally stored data by means of a serial data packet. The host controller sends a command to the AT93C46DN-SH-T to control the internal operations and to access the stored data.

The write-protect circuit ensures the reliability of stored data by preventing accidental or unauthorized write cycles. The write-protect circuit may be enabled and disabled by an external signal provided by the host controller. Additionally, the AT93C46DN-SH-T supports a variety of authentication protocols, including the high-security Atmel Secure Flash protocol.

Overall, the AT93C46DN-SH-T is a low-cost, low pin-count memory solution for use in automotive and other applications requiring reliable storage for program data. The device enables designers to increase their options for component integration in space-constrained applications. Moreover, its security features such as authentication protocols and the write-protect circuit ensure the secure storage of data.

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