Encyclopedia Entry: 93LC46BT/ST

Product Overview

Category

The 93LC46BT/ST 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, computers, and consumer electronics.

Characteristics

• Non-volatile: The 93LC46BT/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: It operates efficiently, minimizing energy requirements.
• High reliability: The EEPROM technology ensures reliable data retention and endurance.

Package and Quantity

The 93LC46BT/ST is typically available in a small surface-mount package. The exact package type may vary depending on the manufacturer. It is commonly sold in reels or tubes containing multiple units.

Specifications

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

Pin Configuration

The 93LC46BT/ST features an 8-pin package with the following pinout:

| Pin Name | Function | |----------|----------| | VCC | Power supply voltage | | GND | Ground | | CS | Chip select | | DI | Serial data input | | DO | Serial data output | | CLK | Clock input | | HOLD | Hold input (optional) | | WP | Write protect input (optional) |

Functional Features

• Sequential read and write operations: The chip supports sequential access to memory locations.
• Hardware and software protection mechanisms: Write protect and hold inputs allow for enhanced security.
• Self-timed programming cycle: The internal circuitry handles the timing requirements, simplifying integration.

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 with a simple serial interface and self-timed programming cycle.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Slower write speeds compared to volatile memory types.
• Higher cost per bit compared to some alternative memory solutions.

Working Principles

The 93LC46BT/ST utilizes EEPROM technology, which allows for non-volatile data storage. It employs an array of floating-gate transistors that can be electrically programmed and erased. Data is written by applying specific voltage levels to the memory cells, altering their charge state. Reading data involves sensing the charge level of each memory cell.

Application Field Plans

The 93LC46BT/ST finds applications in various fields, including: 1. Microcontroller-based systems requiring non-volatile memory storage. 2. Computer motherboards for storing system configuration data. 3. Consumer electronics, such as smart TVs and set-top boxes, for firmware storage. 4. Automotive electronics, including engine control units and infotainment systems. 5. Industrial automation systems for storing calibration data and configuration settings.

Alternative Models

For those seeking alternatives to the 93LC46BT/ST, several similar EEPROM chips are available on the market. Some notable alternatives include: - 24LC01B: 1 kilobit EEPROM with I2C interface. - AT93C46A: 1 kilobit EEPROM with SPI interface. - CAT24C01: 1 kilobit EEPROM with Microwire interface.

These alternative models offer similar functionality and can be considered based on specific project requirements.

In conclusion, the 93LC46BT/ST is a compact and reliable EEPROM chip widely used for non-volatile data storage in various electronic devices. Its small form factor, low power consumption, and high reliability make it suitable for diverse applications across different industries.

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