Encyclopedia Entry: 93AA76A-I/ST

Product Overview

Category

The 93AA76A-I/ST belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is primarily used for non-volatile data storage in various electronic devices, such as microcontrollers, embedded systems, and consumer electronics.

Characteristics

• Non-volatile: The 93AA76A-I/ST retains stored data even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically.
• Small form factor: The chip is compact and suitable for integration into space-constrained designs.
• Low power consumption: The product operates efficiently, minimizing energy requirements.
• High endurance: It supports a large number of write and erase cycles, ensuring long-term reliability.

Package

The 93AA76A-I/ST is available in a small outline integrated circuit (SOIC) package, which facilitates easy soldering onto printed circuit boards (PCBs).

Essence

The essence of this product lies in its ability to provide reliable and flexible non-volatile data storage in electronic systems.

Packaging/Quantity

The 93AA76A-I/ST is typically packaged in reels or tubes, with each reel containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Memory capacity: 8 kilobits (1 kilobyte)
• Interface: Serial Peripheral Interface (SPI)
• Operating voltage: 2.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Write endurance: Up to 1 million write cycles
• Data retention: Up to 200 years

Detailed Pin Configuration

The 93AA76A-I/ST features an 8-pin SOIC package with the following pin configuration:

1. Chip Select (CS)
2. Serial Clock (SCK)
3. Serial Data Input (SI)
4. Serial Data Output (SO)
5. Write Protect (WP)
6. VCC (Power supply)
7. Ground (GND)
8. Not Connected (NC)

Functional Features

• Sequential read and write operations: The chip supports sequential access to memory locations, enabling efficient data retrieval and storage.
• Software and hardware protection: The Write Protect (WP) pin allows for software or hardware-based protection of data, preventing accidental modification.
• Self-timed programming cycle: The 93AA76A-I/ST incorporates an internal timer that ensures precise programming timings, simplifying system integration.

Advantages and Disadvantages

Advantages

• Compact size enables integration into space-constrained designs.
• High endurance ensures long-term reliability.
• Low power consumption minimizes energy requirements.
• Flexible interface allows for easy integration with various microcontrollers and systems.
• Software and hardware protection options enhance data security.

Disadvantages

• Limited memory capacity compared to other EEPROM chips.
• Relatively higher cost per kilobit compared to larger capacity EEPROMs.

Working Principles

The 93AA76A-I/ST utilizes a floating gate transistor structure to store and retrieve data. When data is written, charge is trapped in the floating gate, altering the transistor's behavior. This change can be detected during read operations, allowing stored data to be retrieved accurately.

Detailed Application Field Plans

The 93AA76A-I/ST finds applications in various fields, including: 1. Automotive electronics: Used for storing critical vehicle parameters and configurations. 2. Industrial automation: Enables non-volatile storage of calibration data and system settings. 3. Consumer electronics: Utilized for firmware storage in devices like smart TVs and home appliances. 4. Medical devices: Stores patient data, device configurations, and calibration information. 5. Internet of Things (IoT): Supports non-volatile storage in IoT devices for sensor data and network configurations.

Detailed and Complete Alternative Models

1. 93AA76B-I/ST: Similar to the 93AA76A-I/ST but with extended temperature range (-40°C to +125°C).
2. 93AA76C-I/ST: Higher capacity version with 16 kilobits (2 kilobytes) of memory.
3. 93AA76D-I/ST: Lower power variant with reduced standby current consumption.

These alternative models offer similar functionality with slight variations in specifications to cater to different application requirements.

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