Encyclopedia Entry: 93AA86/P

Product Overview

Category

The 93AA86/P belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Non-volatile: The 93AA86/P retains stored data even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically, without requiring physical removal of the chip.
• High storage capacity: The 93AA86/P has a storage capacity of 8,192 bits (1,024 bytes).
• Low power consumption: This chip operates on low power, making it suitable for battery-powered devices.
• Small package size: The 93AA86/P is available in a compact package, enabling its integration into space-constrained designs.

Package and Quantity

The 93AA86/P is typically packaged in a small surface-mount package, such as SOIC (Small Outline Integrated Circuit) or TSSOP (Thin Shrink Small Outline Package). It is commonly supplied in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Memory Capacity: 8,192 bits (1,024 bytes)
• Interface: Serial (SPI - Serial Peripheral Interface)
• Operating Voltage: 2.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1,000,000 cycles
• Data Retention: 200 years

Detailed Pin Configuration

The 93AA86/P features an 8-pin configuration:

1. Chip Select (/CS): Enables communication with the chip.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Receives data from the external device.
4. Serial Data Output (SO): Transmits data to the external device.
5. Write Protect (/WP): Allows write protection for the memory.
6. VCC: Power supply voltage.
7. Ground (GND): Common ground reference.
8. Hold (/HOLD): Suspends ongoing operations temporarily.

Functional Features

• Sequential Read: The 93AA86/P allows sequential reading of multiple memory locations, reducing access time.
• Software Protection: Write protection can be enabled using the Write Protect (/WP) pin or software commands, preventing accidental modification of stored data.
• Self-Timed Programming: The chip automatically manages programming and erase operations, simplifying the integration process.
• High-Speed SPI Interface: The Serial Peripheral Interface (SPI) enables fast and efficient data transfer between the 93AA86/P and the host device.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• Electrically erasable and reprogrammable, eliminating the need for physical replacement.
• Compact package size allows for easy integration into various electronic devices.
• Low power consumption extends battery life in portable applications.
• High-speed SPI interface enables efficient data transfer.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively slower write speeds compared to some alternative models.
• Susceptible to electromagnetic interference (EMI) due to its small package size.

Working Principles

The 93AA86/P utilizes EEPROM technology, which employs a floating gate transistor structure to store and retrieve data. When data is written, an electrical charge is trapped in the floating gate, altering the transistor's behavior. This charge can be removed during the erase operation, allowing the transistor to return to its original state. The stored data can be read by applying appropriate voltage levels to the memory cells.

Detailed Application Field Plans

The 93AA86/P finds applications in various fields, including: - Automotive electronics: Used for storing configuration data, calibration parameters, and event logs in automotive control units. - Industrial automation: Employed in programmable logic controllers (PLCs) for storing program code and critical data. - Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles for firmware storage and system configuration. - Medical devices: Utilized for storing patient data, device settings, and firmware in medical equipment.

Alternative Models

Several alternative models with similar functionality to the 93AA86/P include: - 25AA080D: Offers a higher storage capacity of 8,192 bytes and operates at a wider voltage range. - AT24C64: Provides a larger memory capacity of 64 kilobits and supports both I2C and SPI interfaces. - CAT24C256: Features an extended memory capacity of 256 kilobits and offers faster write speeds.

In conclusion, the 93AA86/P is a compact EEPROM chip that provides non-volatile data storage