AT29C256-70JC-T

Product Overview

Category: Integrated Circuit (IC)

Use: The AT29C256-70JC-T is a high-performance electrically erasable and programmable read-only memory (EEPROM) IC. It is commonly used for non-volatile storage in various electronic devices.

Characteristics: - High-speed operation - Low power consumption - Wide voltage range - High endurance - Reliable data retention

Package: The AT29C256-70JC-T is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package, which provides protection and easy integration into circuit boards.

Essence: This IC is designed to store and retrieve digital information reliably, even when the power supply is removed. It offers a convenient solution for applications that require non-volatile memory.

Packaging/Quantity: The AT29C256-70JC-T is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Memory Size: 256 kilobits (32 kilobytes)
• Operating Voltage: 2.7V to 5.5V
• Access Time: 70 nanoseconds
• Erase/Program Cycle Endurance: 10,000 cycles
• Data Retention: 20 years
• Organization: 32K x 8 bits
• Interface: Parallel

Pin Configuration

The AT29C256-70JC-T has a total of 32 pins. Here is the detailed pin configuration:

1. A16
2. A14
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. VCC
13. OE#
14. CE#
15. WE#
16. I/O0
17. I/O1
18. I/O2
19. I/O3
20. I/O4
21. I/O5
22. I/O6
23. I/O7
24. NC
25. GND
26. A8
27. A9
28. A11
29. A13
30. A15
31. BYTE#
32. WP#

Functional Features

• High-speed read and write operations
• Easy interface with microcontrollers and other digital devices
• Byte-wise programming capability
• Sector erase capability for efficient memory management
• Hardware and software data protection mechanisms
• Low power consumption in standby mode

Advantages and Disadvantages

Advantages: - Fast access time allows for quick data retrieval - Wide voltage range enables compatibility with various systems - High endurance ensures reliable and long-lasting performance - Efficient sector erase feature simplifies memory management - Low power consumption helps conserve energy

Disadvantages: - Limited storage capacity compared to larger EEPROMs or other memory technologies - Parallel interface may require more pins and complex circuitry compared to serial interfaces

Working Principles

The AT29C256-70JC-T utilizes a combination of electronic circuits and non-volatile memory cells to store and retrieve data. It employs a floating gate transistor structure that can be electrically programmed and erased. The stored information remains intact even when the power supply is disconnected.

During operation, the IC communicates with the controlling device through its parallel interface. The control signals (CE#, OE#, WE#) and address lines (A0-A16) are used to select the desired memory location and perform read, write, or erase operations. The data lines (I/O0-I/O7) facilitate the transfer of information between the IC and the external device.

Detailed Application Field Plans

The AT29C256-70JC-T finds applications in various electronic systems that require non-volatile memory storage. Some common application fields include:

1. Embedded Systems: Used for firmware storage in microcontrollers, allowing for easy updates and customization.
2. Industrial Control Systems: Provides reliable data storage for critical parameters, configuration settings, and event logs.
3. Automotive Electronics: Stores calibration data, fault codes, and other essential information in automotive control units.
4. Consumer Electronics: Used in devices like set-top boxes, gaming consoles, and smart appliances to store user preferences and system configurations.
5. Communication Systems: Enables storage of network settings, firmware upgrades, and call logs in routers, modems, and telecommunication equipment.

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar EEPROM IC with a slower access time of 150 nanoseconds.
2. AT25SF041-SSHD-T: Serial Flash memory IC with 4 megabits (512 kilobytes) capacity and a serial interface.
3. M24C64-FMN6TP: