AT27BV256-90JI

Product Overview

Category

AT27BV256-90JI belongs to the category of non-volatile memory devices.

Use

This product is primarily used for storing and retrieving data in electronic systems.

Characteristics

• Non-volatile: The stored data is retained even when power is removed.
• High capacity: The AT27BV256-90JI has a storage capacity of 256 kilobits.
• Fast access time: It operates at a speed of 90 nanoseconds.
• Low power consumption: This device is designed to minimize power usage.
• Reliable: It offers high endurance and data retention capabilities.

Package

The AT27BV256-90JI is available in a standard JEDEC 32-pin PLCC package.

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for electronic systems.

Packaging/Quantity

The AT27BV256-90JI is typically packaged in reels or trays, with a quantity of 250 units per reel/tray.

Specifications

• Storage Capacity: 256 kilobits (32 kilobytes)
• Access Time: 90 nanoseconds
• Operating Voltage: 2.7V - 3.6V
• Operating Temperature Range: -40°C to +85°C
• Interface: Parallel
• Organization: 32K x 8 bits
• Erase/Program Cycle Endurance: 10,000 cycles
• Data Retention: 20 years

Detailed Pin Configuration

The AT27BV256-90JI has a total of 32 pins, which are assigned specific functions as follows:

1. A0 - Address Input
2. A1 - Address Input
3. A2 - Address Input
4. A3 - Address Input
5. A4 - Address Input
6. A5 - Address Input
7. A6 - Address Input
8. A7 - Address Input
9. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. A15 - Address Input
17. CE - Chip Enable Input
18. OE - Output Enable Input
19. WE - Write Enable Input
20. I/O0 - Data Input/Output
21. I/O1 - Data Input/Output
22. I/O2 - Data Input/Output
23. I/O3 - Data Input/Output
24. I/O4 - Data Input/Output
25. I/O5 - Data Input/Output
26. I/O6 - Data Input/Output
27. I/O7 - Data Input/Output
28. VCC - Power Supply
29. GND - Ground
30. NC - No Connection
31. NC - No Connection
32. NC - No Connection

Functional Features

• Random Access: The AT27BV256-90JI allows for random access to any memory location.
• Byte-Writable: It supports byte-level write operations, providing flexibility in data modification.
• Sector Erase: This device allows for erasing data at the sector level, enabling efficient memory management.
• Hardware Data Protection: It features a hardware protection mechanism to prevent accidental writes or erasures.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• High capacity allows for storing a significant amount of data.
• Fast access time enables quick retrieval of information.
• Low power consumption helps conserve energy.
• Reliable endurance and data retention characteristics ensure long-term usability.

Disadvantages

• Limited erase/program cycle endurance compared to some other non-volatile memory technologies.
• Higher cost per bit compared to certain volatile memory options.

Working Principles

The AT27BV256-90JI utilizes a combination of floating-gate transistors and control circuitry to store and retrieve data. When writing data, the control circuitry applies appropriate voltages to program the floating gates, altering their electrical characteristics. During read operations, the stored charge in the floating gates is sensed, allowing the retrieval of previously stored data.

Detailed Application Field Plans

The AT27BV256-90JI finds applications in various electronic systems, including but not limited to: - Embedded systems - Consumer electronics - Industrial automation - Automotive electronics - Communication devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the AT27BV256-90JI include: - AT28C256-15PU: 256 kilobit parallel EEPROM with a 150 nanosecond access time. - M29F200BB-70N1: 2 megabit parallel flash memory with a 70