AT27C040-70JI

Product Overview

Category

AT27C040-70JI belongs to the category of programmable read-only memory (PROM) chips.

Use

It is primarily used for storing data that needs to be permanently written and cannot be modified or erased.

Characteristics

• Non-volatile: The stored data remains intact even when power is turned off.
• High storage capacity: The AT27C040-70JI has a capacity of 4 megabits (512 kilobytes).
• Fast access time: It operates at a speed of 70 nanoseconds.
• Low power consumption: It requires minimal power to operate efficiently.

Package

The AT27C040-70JI comes in a 32-pin plastic package, which ensures durability and protection.

Essence

The essence of this product lies in its ability to provide reliable and secure storage for critical data that needs to be permanently stored.

Packaging/Quantity

The AT27C040-70JI is typically packaged in tubes or trays, with each tube or tray containing a specific quantity of chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Memory Capacity: 4 Megabits (512 Kilobytes)
• Access Time: 70 Nanoseconds
• Operating Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Pin Count: 32
• Package Type: Plastic

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 (Output Enable)
13. /WE (Write Enable)
14. VCC (Power Supply)
15. A14
16. A13
17. A8
18. A9
19. A11
20. A10
21. /CE (Chip Enable)
22. I/O0
23. I/O1
24. I/O2
25. I/O3
26. I/O4
27. I/O5
28. I/O6
29. I/O7
30. GND (Ground)
31. NC (No Connection)
32. /WP (Write Protect)

Functional Features

• Non-volatile storage: The AT27C040-70JI retains data even when power is disconnected.
• High-speed access: It provides fast access to stored data with a low access time of 70 nanoseconds.
• Easy integration: The chip can be easily integrated into various electronic systems due to its standard pin configuration.
• Reliable performance: It offers reliable and consistent performance, ensuring the integrity of stored data.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• Fast access time allows for quick retrieval of stored information.
• High storage capacity accommodates large amounts of data.
• Low power consumption minimizes energy requirements.

Disadvantages

• Data cannot be modified or erased once programmed.
• Limited write cycles compared to other types of memory.
• Relatively higher cost compared to other memory options.

Working Principles

The AT27C040-70JI operates on the principle of electrical programming. Once programmed, the data remains permanently stored in the memory cells. The chip uses a combination of address lines and control signals to read the stored data. The /OE (Output Enable) and /WE (Write Enable) pins control the read and write operations, respectively.

Detailed Application Field Plans

The AT27C040-70JI finds applications in various fields, including:

1. Embedded Systems: It is used in embedded systems to store firmware, boot code, and other critical data.
2. Automotive Electronics: The chip is employed in automotive electronics for storing calibration data, configuration settings, and software updates.
3. Industrial Control Systems: It finds use in industrial control systems for storing program instructions and data logs.
4. Medical Devices: The AT27C040-70JI is utilized in medical devices for storing patient data, device configurations, and firmware.
5. Consumer Electronics: It can be found in consumer electronics such as gaming consoles, set-top boxes, and audio/video equipment for storing system software and data.

Detailed and Complete Alternative Models

1. AT27C080-90JI: 8 Megabit (1 Megabyte) capacity, 90 nanoseconds access time.
2. AT27C256R-45JI: 256 Kilobit (32 Kilobytes) capacity, 45 nanoseconds access time.
3. AT27LV010A-12JI: 1 Megabit (128 Kilobytes) capacity, 12 nanoseconds access time.
4. AT27BV020