Encyclopedia Entry: 93LC86/SN

Product Overview

Category

The 93LC86/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, computers, and consumer electronics.

Characteristics

• Non-volatile: The 93LC86/SN retains stored data even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically.
• Small package size: The chip is available in a compact form factor, making it suitable for space-constrained applications.
• High endurance: The 93LC86/SN offers a high number of erase/write cycles, ensuring long-term reliability.
• Low power consumption: This chip operates efficiently, consuming minimal power during read and write operations.

Package and Quantity

The 93LC86/SN is typically packaged in a small outline integrated circuit (SOIC) package. It is commonly available in reels or tubes containing multiple units.

Specifications

• Memory capacity: 8 kilobits (1 kilobyte)
• Organization: 1024 x 8 bits
• Supply voltage: 2.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Write time: 3 ms (typical)
• Data retention: 200 years (minimum)

Pin Configuration

The 93LC86/SN features an 8-pin configuration with the following pin assignments:

1. Chip Select (/CS)
2. Serial Clock (SCK)
3. Serial Data Input (SI)
4. Serial Data Output (SO)
5. Write Enable (WE)
6. VCC (Supply Voltage)
7. Ground (GND)
8. Not Connected (NC)

Functional Features

• Sequential read and write operations: The chip supports sequential access to memory locations, allowing efficient data retrieval and storage.
• Hardware and software protection: The 93LC86/SN offers protection mechanisms to prevent unauthorized access or accidental modification of stored data.
• Self-timed programming cycle: The chip automatically manages the timing of write and erase operations, simplifying the integration process.

Advantages

• Compact size enables integration into space-constrained designs.
• High endurance ensures reliable long-term data storage.
• Low power consumption prolongs battery life in portable devices.
• Versatile application range due to wide operating temperature range.

Disadvantages

• Limited memory capacity compared to other EEPROM chips.
• Relatively slower write time may impact performance in time-sensitive applications.

Working Principles

The 93LC86/SN utilizes a floating gate transistor structure to store and retrieve data. When programmed, charges are trapped in the floating gate, representing binary information. These charges can be erased by applying an electric field, allowing new data to be written. During read operations, the stored charges are sensed to determine the stored data.

Application Field Plans

The 93LC86/SN finds applications in various fields, including: 1. Automotive electronics: Used for storing configuration data, fault codes, and calibration parameters in engine control units (ECUs) and body control modules (BCMs). 2. Industrial automation: Employed for data logging, configuration storage, and firmware updates in programmable logic controllers (PLCs) and human-machine interfaces (HMIs). 3. Consumer electronics: Integrated into smart TVs, set-top boxes, and gaming consoles for storing user preferences, channel lists, and firmware updates.

Alternative Models

Other alternative models with similar functionality include: - 93LC66/SN - 93LC56/SN - 93LC46/SN

In conclusion, the 93LC86/SN is a compact and versatile EEPROM chip that offers non-volatile data storage with high endurance and low power consumption. Its wide range of applications and availability of alternative models make it a popular choice in various electronic devices.

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