93C46A-E/ST

93C46A-E/ST application field and working principle

The 93C46A-E/ST is a 2K electrically erasable programmable read-only memory (EEPROM) integrated circuit (IC) manufactured by STMicroelectronics. This chip is commonly used in embedded systems that require nonvolatile memory storage. The 93C46A-E/ST offers an accessible, yet non-volatile form of memory storage while still providing a low-cost solution.

The 93C46A-E/ST offers two address space configurations, the 8bit and 16bit versions. The 8bit version requires 8 address pins and the 16bit version requires 16 address pins. The 93C46A-E/ST also has a 16-bit wide data space, with each bit being either 0 or 1. This IC has a capacity of 2048 bits, divided into 128 8-bit words.

The 93C46A-E/ST has multiple uses for both its 8bit and 16bit version. The 8bit version is mainly used for system configuration purpose in industrial, automotive, and consumer applications. The 16bit version is mainly used in higher end applications, such as data recording and telemetry.

The 93C46A-E/ST uses the two-wire serial interface to interact with a microcontroller. The two-wire serial interface of the 93C46A-E/ST consists of two pins, SCL (serial clock) and SDA (serial data). The microcontroller initiates a command cycle by sending a control word on the serial data line. The control word is sent in two 8-bit bytes, a control byte and an address byte. The control byte contains the read/write command, the address byte contains the address at which the read/write cycle is to take place.

The 93C46A-E/ST provides a number of features, such as on-chip write protection and the ability to store data down to a single bit level. It also provides an active read control circuit, which monitors the output of the read function and terminates the read cycle when the data being read is stable. This feature allows long read cycles with no read error.

The 93C46A-E/ST also comes with a self-timed write feature, allowing data to be written without the need for an external clock. This feature also allows a block of data to be written in a single write cycle and provides greater flexibility in programming. The 93C46A-E/ST also supports a hardware write-protection feature, allowing the IC to be secured against unauthorized access.

The 93C46A-E/ST is a versatile memory IC, providing an accessible yet non-volatile form of memory storage. Its 8bit and 16bit versions, use in embedded systems and its various features make this IC an ideal solution for a number of applications.