AT27C1024-70JC

Product Overview

Category

The AT27C1024-70JC belongs to the category of programmable read-only memory (PROM) chips.

Use

This chip is commonly used for storing permanent data that needs to be retained even when power is turned off. It is widely utilized in various electronic devices and systems.

Characteristics

• Non-volatile: The AT27C1024-70JC retains data even without power supply.
• Programmable: The chip can be programmed with specific data.
• Read-only: Once programmed, the data cannot be modified or erased.

Package

The AT27C1024-70JC is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of the AT27C1024-70JC lies in its ability to store and retrieve data reliably, making it an essential component in many electronic applications.

Packaging/Quantity

The AT27C1024-70JC is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

• Operating Voltage: 5V
• Access Time: 70ns
• Memory Size: 1 Megabit (128K x 8)
• Organization: 128K words of 8 bits each
• Programming Time: 100µs per byte
• Data Retention: 10 years

Detailed Pin Configuration

The AT27C1024-70JC has a total of 32 pins, which are assigned specific functions as follows:

1. A14 - Address Input
2. A12 - Address Input
3. A7 - Address Input
4. A6 - Address Input
5. A5 - Address Input
6. A4 - Address Input
7. A3 - Address Input
8. A2 - Address Input
9. A1 - Address Input
10. A0 - Address Input
11. VPP - Programming Voltage Input
12. A8 - Address Input
13. A9 - Address Input
14. A11 - Address Input
15. A10 - Address Input
16. OE - Output Enable
17. CE - Chip Enable
18. WE - Write Enable
19. I/O0 - Data Input/Output
20. I/O1 - Data Input/Output
21. I/O2 - Data Input/Output
22. I/O3 - Data Input/Output
23. I/O4 - Data Input/Output
24. I/O5 - Data Input/Output
25. I/O6 - Data Input/Output
26. I/O7 - Data Input/Output
27. GND - Ground
28. NC - No Connection
29. VCC - Power Supply
30. A13 - Address Input
31. A15 - Address Input
32. A16 - Address Input

Functional Features

• High-speed access: The AT27C1024-70JC provides fast access to stored data with a low access time of 70ns.
• Easy integration: The chip can be easily integrated into various electronic systems due to its standard pin configuration and compatibility.
• Reliable data retention: The non-volatile nature of the chip ensures that data remains intact even during power loss or system shutdown.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention without power supply.
• Fast access time allows for quick retrieval of stored information.
• Easy integration into existing electronic systems.

Disadvantages

• Once programmed, the data cannot be modified or erased, limiting flexibility.
• Limited storage capacity compared to other memory technologies.

Working Principles

The AT27C1024-70JC operates based on the principle of electrical charge trapping. During programming, a high voltage is applied to specific memory cells, causing electrons to be trapped in the floating gate. This trapped charge alters the threshold voltage of the cell, allowing it to retain the programmed data even when power is removed. During read operations, the stored charge is sensed, and the corresponding data is retrieved.

Detailed Application Field Plans

The AT27C1024-70JC finds applications in various fields, including:

1. Embedded Systems: Used for firmware storage in microcontrollers and other embedded devices.
2. Automotive Electronics: Employed for storing critical data in automotive systems such as engine control units (ECUs) and infotainment systems.
3. Industrial Control Systems: Utilized for program storage in industrial automation and control systems.
4. Consumer Electronics: Integrated into devices like gaming consoles, set-top boxes, and home appliances for storing system software or configuration data.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: 64K (8K x 8) EEPROM chip with a 150ns access time.
2. AM29F