Microchip 93AA46AT-I/OT 1K Microwire Serial EEPROM: Key Features and Applications

The Microchip 93AA46AT-I/OT is a 1Kbit Microwire serial Electrically Erasable Programmable Read-Only Memory (EEPROM) designed for applications requiring reliable non-volatile data storage in a compact form factor. This device is organized as 64 x 16 or 128 x 8 bits, offering flexibility for different system architectures. Housed in a space-saving SOT-23-6 package, it is ideal for modern, miniaturized electronics where board real estate is at a premium.

Key Features

A primary advantage of this EEPROM is its low-power consumption, which is critical for battery-powered and portable devices. It supports a wide voltage range from 1.8V to 5.5V, enabling compatibility with various logic levels and ensuring operation in diverse system environments. The device utilizes the simple and efficient 3-wire Microwire serial interface, which facilitates easy communication with a host microcontroller using just a Data In (DI), Data Out (DO), and Clock (SK) signal, alongside a Chip Select (CS).

It boasts a high level of reliability with over 1 million erase/write cycles and data retention exceeding 200 years. These specifications make it an exceptionally robust solution for data that must be updated frequently and stored indefinitely. Furthermore, it features built-in hardware and software write protection mechanisms, safeguarding critical memory contents from accidental corruption.

Applications

The 93AA46AT-I/OT is versatile and finds use in a broad spectrum of applications. It is commonly employed for storing calibration data, configuration settings, and small lookup tables. Key application areas include:

Automotive Electronics: Storing module configuration data and vehicle identification information.

Industrial Systems: Used in PLCs, sensors, and control systems for parameter storage.

Consumer Electronics: Found in smart meters, printers, set-top boxes, and remote controls.

Medical Devices: Storing calibration constants and device usage logs in portable medical equipment.

IoT and Smart Technology: Essential for storing network parameters and unique identifiers in connected devices.

ICGOOODFIND: The Microchip 93AA46AT-I/OT stands out as a highly reliable, low-power, and compact non-volatile memory solution. Its simplicity, durability, and wide operating voltage make it a superior choice for designers across automotive, industrial, consumer, and medical markets who need to store critical data securely.

Keywords: EEPROM, Microwire Interface, Low-Power, Non-Volatile Memory, Data Storage