Encyclopedia Entry: 93C46B-I/SN

Product Overview

Category

The 93C46B-I/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, automotive systems, consumer electronics, and industrial applications.

Characteristics

• Non-volatile: The 93C46B-I/SN retains stored data even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically, without requiring physical removal of the chip.
• Small form factor: The chip is compact in size, making it suitable for space-constrained applications.
• Low power consumption: It operates efficiently with minimal power requirements.
• High reliability: The chip offers robust performance and long-term data retention.

Package and Quantity

The 93C46B-I/SN is available in a small outline integrated circuit (SOIC) package. It is typically supplied in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Memory capacity: 1 kilobit (128 bytes)
• Supply voltage: 2.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Write endurance: 1 million cycles
• Data retention: 100 years

Pin Configuration

The 93C46B-I/SN chip has an 8-pin configuration, as follows:

```

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| | 1 | 8 | VCC 2 | 7 | Chip Select (CS) 3 | 6 | Serial Clock (CLK) 4 | 5 | Serial Data Input/Output (DI/DO) |___________| ```

Functional Features

• Serial communication: The chip utilizes a simple serial interface for data transfer.
• Write protection: It supports hardware and software write protection mechanisms to prevent accidental modification of stored data.
• Sequential read operation: Data can be read sequentially from the memory array, allowing efficient access to stored information.

Advantages

• Compact size enables integration into space-constrained designs.
• Low power consumption prolongs battery life in portable devices.
• High reliability ensures data integrity over extended periods.
• Ease of use due to the simple serial interface.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Slower write and erase operations compared to volatile memory types.
• Vulnerable to electromagnetic interference (EMI) due to its small form factor.

Working Principles

The 93C46B-I/SN uses an electrically controlled gate structure to store and retrieve data. It employs a combination of charge trapping and tunneling mechanisms to modify the electrical state of individual memory cells.

Application Field Plans

The 93C46B-I/SN finds applications in various fields, including: 1. Automotive systems: Used for storing vehicle configuration data, mileage records, and security information. 2. Consumer electronics: Employed in devices like smart TVs, set-top boxes, and gaming consoles for firmware storage and user settings. 3. Industrial automation: Utilized for storing calibration data, equipment parameters, and production logs in programmable logic controllers (PLCs) and industrial control systems.

Alternative Models

Other alternative models that offer similar functionality to the 93C46B-I/SN include: - 93C56B-I/SN: Higher capacity variant with 2 kilobits of memory. - 93C66B-I/SN: Extended capacity variant with 4 kilobits of memory. - 93C86B-I/SN: Higher capacity variant with 16 kilobits of memory.

In conclusion, the 93C46B-I/SN is a compact and reliable EEPROM chip used for non-volatile data storage in various electronic applications. Its small form factor, low power consumption, and high reliability make it a popular choice among designers. However, its limited capacity and slower write/erase operations should be considered when selecting an appropriate memory solution.

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