93C46A-E/SN

Product Overview

Category

The 93C46A-E/SN belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Electrically erasable: The 93C46A-E/SN can be erased and reprogrammed electronically, making it convenient for updating stored data.
• Non-volatile: The chip retains data even when power is removed.
• Small package size: The 93C46A-E/SN comes in a compact package, allowing for space-efficient integration into electronic circuits.
• Low power consumption: This EEPROM chip consumes minimal power during read and write operations.

Package and Quantity

The 93C46A-E/SN is available in an SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels containing a specified quantity of chips.

Specifications

• Memory capacity: 1 kilobit (128 bytes)
• Operating voltage: 2.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Data retention: Up to 200 years
• Endurance: Minimum 100,000 write cycles

Pin Configuration

The 93C46A-E/SN has a total of 8 pins, each serving a specific function. The pin configuration is as follows:

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| | | 1 2 3 4 | | | | 8 7 6 5 | |_______________| ```

1. Chip Select (/CS): Enables or disables the chip for communication.
2. Serial Data Input (DI): Receives data serially for programming or reading.
3. Serial Data Output (DO): Outputs data serially during read operations.
4. Clock (CLK): Provides the clock signal for synchronization.
5. VCC: Power supply voltage input.
6. Write Protect (/WP): Enables or disables write protection.
7. Ground (GND): Common ground reference.
8. Not Connected (NC): Unused pin.

Functional Features

• Byte-wise programming: The 93C46A-E/SN allows individual bytes to be programmed, providing flexibility in data storage and retrieval.
• Sequential read operation: It supports sequential read operations, enabling efficient access to stored data.
• Hardware write protection: The chip includes a write protect pin (/WP) that can be used to prevent accidental data modification.

Advantages and Disadvantages

Advantages

• Compact size enables integration into space-constrained electronic devices.
• Low power consumption prolongs battery life in portable applications.
• High endurance ensures reliable and long-lasting data storage.
• Electrically erasable nature allows for easy updates and modifications.

Disadvantages

• Limited memory capacity may not be suitable for applications requiring large amounts of data storage.
• Serial communication interface may result in slower data transfer compared to parallel interfaces.

Working Principles

The 93C46A-E/SN utilizes an electrically controlled floating gate to store data. When programming, a high voltage is applied to the gate, trapping electrons and altering the transistor's threshold voltage. This change in threshold voltage represents the stored data. During read operations, the threshold voltage is measured to determine the stored information.

Application Field Plans

The 93C46A-E/SN finds application in various fields, including: 1. Microcontrollers: Used for storing configuration settings, calibration data, and firmware updates. 2. Automotive systems: Employed in electronic control units (ECUs) for storing vehicle-specific data, such as VIN numbers and mileage. 3. Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles for storing user preferences and settings.

Alternative Models

1. 93C46B-E/SN: Similar to the 93C46A-E/SN but with extended temperature range (-40°C to +125°C).
2. 93C56A-E/SN: Offers higher memory capacity of 2 kilobits (256 bytes) while maintaining similar specifications.
3. 93C86A-E/SN: Provides increased memory capacity of 16 kilobits (2048 bytes) with compatible pin configuration.

In conclusion, the 93C46A-E/SN is a compact and versatile EEPROM chip used for non-volatile data storage in various electronic applications. Its electrically erasable nature, low power consumption, and small package size make it an attractive choice for designers seeking reliable and flexible memory solutions.

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