Encyclopedia Entry: 93LC76A-I/ST

Product Overview

• Category: Integrated Circuit (IC)
• Use: Non-volatile Serial EEPROM Memory
• Characteristics: Small form factor, low power consumption, high reliability
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The 93LC76A-I/ST is a non-volatile memory chip that can store and retrieve data even when the power is turned off.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Memory Size: 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: 1 million write cycles
• Data Retention: 200 years

Detailed Pin Configuration

The 93LC76A-I/ST has a total of 8 pins, each serving a specific purpose: 1. Chip Select (/CS): Enables communication with the chip when set to a logic low level. 2. Serial Clock (SCK): Provides the clock signal for synchronous data transfer. 3. Serial Data Input (SI): Transfers data from the microcontroller to the chip. 4. Serial Data Output (SO): Transfers data from the chip to the microcontroller. 5. Write Protect (/WP): When set to a logic low level, prevents write operations. 6. VCC: Power supply voltage input. 7. Ground (GND): Common ground reference. 8. Hold (/HOLD): Pauses ongoing operations when set to a logic low level.

Functional Features

• Non-volatile Memory: The 93LC76A-I/ST retains data even when power is disconnected.
• Serial Interface: Uses the SPI protocol for easy integration with microcontrollers.
• High Reliability: Designed to withstand harsh operating conditions and provide long-term data retention.
• Low Power Consumption: Optimized for energy-efficient applications.

Advantages and Disadvantages

Advantages: - Compact Size: The small form factor allows for space-saving designs. - Easy Integration: The SPI interface simplifies communication with microcontrollers. - High Reliability: Ensures data integrity in critical applications. - Low Power Consumption: Ideal for battery-powered devices.

Disadvantages: - Limited Memory Capacity: With only 8 kilobits of storage, it may not be suitable for applications requiring larger memory sizes. - Slower Write Speed: Compared to other memory technologies, EEPROMs have relatively slower write speeds.

Working Principles

The 93LC76A-I/ST utilizes EEPROM (Electrically Erasable Programmable Read-Only Memory) technology. It stores data by trapping electric charges within a floating gate transistor. These charges can be erased and reprogrammed using electrical signals. The chip communicates with a microcontroller through the SPI interface, allowing for easy reading and writing of data.

Detailed Application Field Plans

The 93LC76A-I/ST finds applications in various fields, including: 1. Consumer Electronics: Used in smart TVs, set-top boxes, and audio systems for storing configuration settings and user preferences. 2. Automotive: Employed in car infotainment systems, instrument clusters, and electronic control units for data storage and firmware updates. 3. Industrial Automation: Integrated into programmable logic controllers (PLCs), sensors, and motor drives for parameter storage and system configuration. 4. Medical Devices: Utilized in medical equipment for storing patient data, calibration values, and device settings.

Detailed and Complete Alternative Models

1. 25LC256: Offers a larger memory capacity of 32 kilobits (4 kilobytes) and operates at the same voltage range.
2. 93C46: Provides a smaller memory capacity of 1 kilobit (128 bytes) and is available in DIP (Dual Inline Package) packaging.
3. 24AA02E48: Features a memory size of 2 kilobits (256 bytes) and supports an extended temperature range of -40°C to +125°C.

In conclusion, the 93LC76A-I/ST is a non-volatile serial EEPROM memory chip that offers small form factor, low power consumption, and high reliability. With its SPI interface and versatile applications, it serves as a crucial component in various electronic devices across different industries.

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