Encyclopedia Entry: 93LC76T-I/SN

Product Overview

Category

The 93LC76T-I/SN belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Electrically erasable: The 93LC76T-I/SN can be erased and reprogrammed electronically, making it convenient for updating stored data.
• Non-volatile: The chip retains its stored data even when power is removed.
• Compact package: It comes in a small outline integrated circuit (SOIC) package, allowing for space-efficient integration into electronic systems.
• High capacity: The 93LC76T-I/SN has a storage capacity of 8 kilobits (1 kilobyte).

Package and Quantity

The 93LC76T-I/SN is packaged in an SOIC package and is typically sold in reels or tubes containing multiple units.

Specifications

• Memory Capacity: 8 kilobits (1024 bytes)
• Supply Voltage: 2.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Interface: Serial Peripheral Interface (SPI)
• Write Time: 3 ms (typical)
• Data Retention: 200 years (typical)

Pin Configuration

The 93LC76T-I/SN chip has a total of 8 pins, which are assigned specific functions:

1. Chip Select (/CS): Enables communication with the chip when pulled low.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Used to input data serially.
4. Serial Data Output (SO): Outputs data serially.
5. Write Protect (/WP): When pulled low, prevents write operations.
6. VCC: Power supply voltage (2.5V to 5.5V).
7. Ground (GND): Common ground reference.
8. Hold (/HOLD): Pauses ongoing operations when pulled low.

Functional Features

• Sequential Read and Write: The chip supports sequential read and write operations, allowing for efficient data transfer.
• Hardware Write Protection: The /WP pin can be used to protect the stored data from accidental overwriting.
• Self-Timed Programming: The programming process is internally controlled, eliminating the need for external timing signals.
• High-Speed SPI Interface: The Serial Peripheral Interface (SPI) enables fast and reliable communication with other devices.

Advantages and Disadvantages

Advantages

• Electrically erasable and reprogrammable.
• Non-volatile data storage.
• Compact package for space-efficient integration.
• High data retention capability.
• Supports hardware write protection.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively slower write time compared to some alternatives.

Working Principles

The 93LC76T-I/SN utilizes a floating gate transistor structure to store data. It employs an electric field to trap or release charge in the floating gate, representing binary states (0 or 1). The data can be modified by applying appropriate voltage levels during programming or erasing operations.

Application Field Plans

The 93LC76T-I/SN finds applications in various fields, including: - Microcontrollers and embedded systems - Automotive electronics - Industrial control systems - Consumer electronics - Communication devices

Alternative Models

Several alternative models with similar functionality are available in the market. Some notable alternatives to the 93LC76T-I/SN include: - 25LC256: A higher-capacity EEPROM chip with 256 kilobits storage. - AT24C02: A compatible EEPROM chip from Atmel with 2 kilobits storage. - M93C86: An alternative chip with 16 kilobits storage.

In conclusion, the 93LC76T-I/SN is a compact and versatile EEPROM chip that offers electrically erasable and reprogrammable non-volatile data storage. With its high data retention capability and hardware write protection, it finds applications in various electronic devices across different industries.

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