Encyclopedia Entry: 93LC46BXT-E/SN

Product Overview

Category

The 93LC46BXT-E/SN belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This chip is commonly used for non-volatile data storage in various electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

• Electrically erasable: The 93LC46BXT-E/SN can be erased and reprogrammed electronically, eliminating the need for physical erasure.
• Non-volatile: The stored data remains intact even when power is removed.
• Small package size: The chip is available in a compact package, making it suitable for space-constrained applications.
• Low power consumption: The 93LC46BXT-E/SN operates efficiently, consuming minimal power during read and write operations.

Package and Quantity

The 93LC46BXT-E/SN is typically packaged in a small surface-mount package. It is commonly sold in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Memory capacity: 1 kilobit (128 bytes)
• Operating voltage: 2.5V to 5.5V
• Data retention: Up to 200 years
• Write endurance: 1 million write cycles
• Operating temperature range: -40°C to +85°C

Pin Configuration

The 93LC46BXT-E/SN features an 8-pin package with the following pinout:

Pin 1: Chip Select (CS) Pin 2: Serial Clock (SCK) Pin 3: Serial Data Input/Output (SDI/SDO) Pin 4: Ground (GND) Pin 5: Write Protect (WP) Pin 6: VCC (Power Supply) Pin 7: Not Connected (NC) Pin 8: Not Connected (NC)

Functional Features

• Serial interface: The chip communicates using a simple serial protocol, allowing for easy integration into various systems.
• Byte-level read and write operations: Data can be accessed and modified at the byte level, providing flexibility in data management.
• Hardware write protection: The Write Protect pin allows users to protect the stored data from accidental modification.
• Self-timed programming cycle: The chip automatically manages the timing of write and erase operations, simplifying system design.

Advantages and Disadvantages

Advantages

• Compact size enables usage in space-constrained applications.
• Low power consumption prolongs battery life in portable devices.
• High data retention ensures long-term reliability.
• Easy integration due to the simple serial interface.

Disadvantages

• Limited memory capacity may not be sufficient for certain applications requiring larger storage.
• Relatively slower write speed compared to other memory technologies.

Working Principles

The 93LC46BXT-E/SN utilizes an electrically erasable technology based on floating-gate transistors. When data is written, charge is trapped in the floating gate, altering the transistor's behavior. This charge can be removed during the erase operation, allowing the transistor to return to its original state. The stored data can be read by applying appropriate voltage levels to the memory cells.

Application Field Plans

The 93LC46BXT-E/SN finds application in various fields, including: 1. Automotive electronics: Used for storing critical vehicle parameters and configuration data. 2. Industrial control systems: Employed for storing calibration data and device settings. 3. Consumer electronics: Integrated into products like smart TVs, set-top boxes, and gaming consoles for firmware storage.

Alternative Models

Other EEPROM chips that can serve as alternatives to the 93LC46BXT-E/SN include: - 24LC256: Offers higher memory capacity (32 kilobits) for applications requiring more storage. - AT93C66A: Provides a wider operating voltage range (1.8V to 5.5V) for compatibility with different systems.

In conclusion, the 93LC46BXT-E/SN is a compact and versatile EEPROM chip that offers non-volatile data storage capabilities. Its low power consumption, small package size, and easy integration make it suitable for a wide range of electronic devices.

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