AT29C256-20PC

Product Overview

Category

AT29C256-20PC belongs to the category of non-volatile memory devices.

Use

It is primarily used for storing and retrieving digital information in electronic systems.

Characteristics

• Non-volatile: Retains data even when power is turned off.
• High storage capacity: 256 kilobits (32 kilobytes) of memory.
• Fast access time: Operates at a speed of 200 nanoseconds.
• Low power consumption: Designed to minimize energy usage.
• Durable: Can withstand multiple read and write cycles without degradation.

Package

AT29C256-20PC is available in a 28-pin plastic dual in-line package (PDIP).

Essence

The essence of AT29C256-20PC lies in its ability to provide reliable and non-volatile storage for electronic systems.

Packaging/Quantity

It is typically sold in reels or tubes, with each containing a specific quantity of AT29C256-20PC chips.

Specifications

• Memory Capacity: 256 kilobits (32 kilobytes)
• Access Time: 200 nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 28-pin PDIP

Detailed Pin Configuration

1. A16
2. A15
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. OE#
13. CE#
14. WE#
15. I/O0
16. I/O1
17. I/O2
18. I/O3
19. I/O4
20. VCC
21. GND
22. I/O5
23. I/O6
24. I/O7
25. A8
26. A9
27. A11
28. A10

Functional Features

• Byte-wide access: Allows individual bytes to be read or written.
• Chip enable (CE#) pin: Enables or disables the memory chip.
• Output enable (OE#) pin: Controls the output data from the memory.
• Write enable (WE#) pin: Enables or disables write operations.
• Automatic page write: Supports fast programming of multiple bytes.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Data retention even without power supply.
• High storage capacity: Suitable for various applications.
• Fast access time: Ensures quick retrieval of information.
• Low power consumption: Energy-efficient operation.
• Durable: Can withstand frequent read and write cycles.

Disadvantages

• Limited storage capacity compared to other memory devices.
• Relatively slower access time compared to some modern alternatives.

Working Principles

AT29C256-20PC utilizes a floating-gate transistor technology called Electrically Erasable Programmable Read-Only Memory (EEPROM). It stores data by trapping electric charge in the floating gate, which can be erased and reprogrammed using electrical signals. The memory cells are organized into an array, with each cell representing a bit of information.

Detailed Application Field Plans

AT29C256-20PC finds application in various electronic systems, including but not limited to: - Microcontrollers - Embedded systems - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar specifications, but operates at 150 nanoseconds access time.
2. AT29C512-90JC: Higher storage capacity of 512 kilobits (64 kilobytes), with a slower access time of 900 nanoseconds.
3. AT29C010A-12PC: Lower storage capacity of 128 kilobits (16 kilobytes), but faster access time of 120 nanoseconds.

These alternative models offer different combinations of storage capacity and access time to suit specific application requirements.

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